文章
Dummer. ゛☀
2017年07月12日
Family - Lamiaceae
Stems - To +80cm tall, erect, herbaceous, multiple or single from base, branching, 4-angled, glabrous, from thin rhizomes.
Leaves - Opposite, sessile, entire, linear, acute, to 5.5cm long, 2-4mm broad, glabrous, dark green above, lighter green below, punctate.
Inflorescence - Compact corymbose arrangement of glomerules. Glomerules +/-7mm broad, 4mm tall(long), with an involucre of attenuate pubescent bracts. Bracts 3-4mm long, 2mm broad, with densely ciliate margins, reduced inward. Flowers sessile.
Flowers - Corolla white to pinkish, bilabiate. Corolla tube to -5mm long, pubescent externally near apex. Upper lip single-lobed. Lobe to 2.6mm long, 1.4mm broad, emarginate, pubescent internally and externally. Lower lip 3-lobed, with faint pinkish spotting. Central lobe longer than lateral lobes, to 2.5mm long, 1.2mm broad, pubescent internally and externally. Stamens 4, didynamous, adnate at apex of corolla tube. Filaments to 1.9mm long, white, glabrous. Anthers pale lilac, .4mm broad. Style white, to 6mm long, glabrous, long exserted, tuberculate and expanded just above ovary. Stigma 2-lobed. Ovary 4-parted, green, glabrous. Calyx tube 2.7mm long, lanate, 4-lobed. Lobes equal, acute, to 1.1mm long, short pubescent to glabrous externally, glabrous internally. Nutlets dark brown at maturity, to 1mm long.
Flowering - June - September.
Habitat - Dry rocky open woods, prairies, wet thickets, meadows, streambanks, roadsides, railroads.
Origin - Native to U.S.
Other info. - This species is common throughout the entire state of Missouri.
This member of the mint family is easy to recognize because of its thin dense leaves and its dense small flower clusters (glomerules). Insects like to visit the plant to retrieve nectar. The leaves and stem have a strong minty odor and the plant can be brewed as a tea.
Stems - To +80cm tall, erect, herbaceous, multiple or single from base, branching, 4-angled, glabrous, from thin rhizomes.
Leaves - Opposite, sessile, entire, linear, acute, to 5.5cm long, 2-4mm broad, glabrous, dark green above, lighter green below, punctate.
Inflorescence - Compact corymbose arrangement of glomerules. Glomerules +/-7mm broad, 4mm tall(long), with an involucre of attenuate pubescent bracts. Bracts 3-4mm long, 2mm broad, with densely ciliate margins, reduced inward. Flowers sessile.
Flowers - Corolla white to pinkish, bilabiate. Corolla tube to -5mm long, pubescent externally near apex. Upper lip single-lobed. Lobe to 2.6mm long, 1.4mm broad, emarginate, pubescent internally and externally. Lower lip 3-lobed, with faint pinkish spotting. Central lobe longer than lateral lobes, to 2.5mm long, 1.2mm broad, pubescent internally and externally. Stamens 4, didynamous, adnate at apex of corolla tube. Filaments to 1.9mm long, white, glabrous. Anthers pale lilac, .4mm broad. Style white, to 6mm long, glabrous, long exserted, tuberculate and expanded just above ovary. Stigma 2-lobed. Ovary 4-parted, green, glabrous. Calyx tube 2.7mm long, lanate, 4-lobed. Lobes equal, acute, to 1.1mm long, short pubescent to glabrous externally, glabrous internally. Nutlets dark brown at maturity, to 1mm long.
Flowering - June - September.
Habitat - Dry rocky open woods, prairies, wet thickets, meadows, streambanks, roadsides, railroads.
Origin - Native to U.S.
Other info. - This species is common throughout the entire state of Missouri.
This member of the mint family is easy to recognize because of its thin dense leaves and its dense small flower clusters (glomerules). Insects like to visit the plant to retrieve nectar. The leaves and stem have a strong minty odor and the plant can be brewed as a tea.
0
0
文章
Dummer. ゛☀
2017年07月12日
Family - Lamiaceae
Stems - From fibrous roots, multiple from the base, rooting at the lowest nodes, branching, herbaceous, 4-angled, fragrant, hollow, pubescent with both long and short and long hairs, to +1m tall, erect.
Leaves - Opposite, decussate, short-petiolate. Petioles to 6mm long, pubescent as the stem. Blades to +9cm long, -4cm broad, lanceolate to ovate-lanceolate, serrate (the tips of the serrations often white), green adaxially, whitish-green abaxially, punctate, pubescent (more so below).
Inflorescence - Axillary and lateral capitate clusters of bractiate cymes. Pedicels +/-1mm long. Bracts subtending the inflorescence with a whitish bloom. Each division of the cyme subtended by a gradually reduced bract.
Flowers - Corolla white, 6mm long, bilabiate. Corolla tube glabrous externally, pubescent internally. Lobes glandular and pubescent externally. Lower lip single-lobed. Lobe 4mm long, 1.5mm broad, white. Upper lip 3-lobed, 4-5mm broad. Lobes deflexed, spotted with purple internally. Central lobe bent forward at the apex. Lateral lobes shorter than the central. Stamens 4, subequal, exserted, adnate at the apex of the corolla tube, alternating with the corolla lobes. Filaments 4-5mm long, white, glabrous. Anthers .8mm long, orange. Style white, glabrous, exserted, 7-8mm long. Stigma unequally 2-lobed. Ovary 4-lobed, green. Lobes pubescent at the apex, +/-.5mm long. Calyx 5-lobed, weakly bilabiate, 4mm long, glandular punctate, covered by a dense whitish pubescence. Calyx tube glabrous internally. Upper lip 2-lobed. Lobes acute, to +1mm long. Lower lip shallowly 3-lobed or notched at the apex. Lobes pubescent internally.
Flowering - July - September.
Habitat - Rocky open woods, grassy slopes, clearings over rocky substrates.
Origin - Native to U.S.
Other info. - This species can be found in the southern 1/4 of Missouri. It is common in the habitats mentioned above. The plant is easily identified by its whitish bracts. Like most species of this genus, the plant has a characteristic minty smell.
"albescens" means "becoming white" for the bracts of the inflorescence.
Stems - From fibrous roots, multiple from the base, rooting at the lowest nodes, branching, herbaceous, 4-angled, fragrant, hollow, pubescent with both long and short and long hairs, to +1m tall, erect.
Leaves - Opposite, decussate, short-petiolate. Petioles to 6mm long, pubescent as the stem. Blades to +9cm long, -4cm broad, lanceolate to ovate-lanceolate, serrate (the tips of the serrations often white), green adaxially, whitish-green abaxially, punctate, pubescent (more so below).
Inflorescence - Axillary and lateral capitate clusters of bractiate cymes. Pedicels +/-1mm long. Bracts subtending the inflorescence with a whitish bloom. Each division of the cyme subtended by a gradually reduced bract.
Flowers - Corolla white, 6mm long, bilabiate. Corolla tube glabrous externally, pubescent internally. Lobes glandular and pubescent externally. Lower lip single-lobed. Lobe 4mm long, 1.5mm broad, white. Upper lip 3-lobed, 4-5mm broad. Lobes deflexed, spotted with purple internally. Central lobe bent forward at the apex. Lateral lobes shorter than the central. Stamens 4, subequal, exserted, adnate at the apex of the corolla tube, alternating with the corolla lobes. Filaments 4-5mm long, white, glabrous. Anthers .8mm long, orange. Style white, glabrous, exserted, 7-8mm long. Stigma unequally 2-lobed. Ovary 4-lobed, green. Lobes pubescent at the apex, +/-.5mm long. Calyx 5-lobed, weakly bilabiate, 4mm long, glandular punctate, covered by a dense whitish pubescence. Calyx tube glabrous internally. Upper lip 2-lobed. Lobes acute, to +1mm long. Lower lip shallowly 3-lobed or notched at the apex. Lobes pubescent internally.
Flowering - July - September.
Habitat - Rocky open woods, grassy slopes, clearings over rocky substrates.
Origin - Native to U.S.
Other info. - This species can be found in the southern 1/4 of Missouri. It is common in the habitats mentioned above. The plant is easily identified by its whitish bracts. Like most species of this genus, the plant has a characteristic minty smell.
"albescens" means "becoming white" for the bracts of the inflorescence.
0
0
文章
Dummer. ゛☀
2017年07月12日
Family - Verbenaceae
Stems - To +50cm tall, simple or branching in inflorescence, retrorse pubescent, erect, sub-hollow, 4-angled (the angles rounded), purplish, with swollen purple areas on stem above each node.
Leaves - Opposite, decussate, petiolate. Petioles to 4cm long, antrorse pubescent, reduced above. Blades ovate to lance-ovate, acute to acuminate, truncate to rounded at base (the tissue abruptly contracted and then decurrent on petiole to form minute wing to .5mm broad), coarse crenate -serrate, pubescent, to +10cm long, +6cm broad. Blades near base of plant smaller and broadly ovate.
Inflorescence - Terminal and axillary spikiform racemes. Flowers decussate and spreading at anthesis, quickly reflexing in fruit. Pedunle purple, pubescent, 4-angled, purple. Each flower subtended by linear bract to 1.5mm long. Flowers on very short pedicels to .3mm long.
Flowers - Corolla bilabiate, whitish internally, often pinkish to purplish tinged externally. Corolla tube to 3.1mm long, glabrous externally. Upper lip purplish externally, emarginate to shallowly 2-lobed, 2.5-3mm broad, 2.5mm long. Lower lip 3-lobed, 4.5mm broad, 4mm long, pubescent at apex of throat. Stamens 4, didynamous, adnate near apex of corolla tube, included. Filaments white, glabrous, to 2.1mm long. Anthers pale yellow, .2mm long. Style 3mm long, glabrous, white, included. Ovary superior, green, terete, 1.3mm long, unilocular, with 1 ovule. Calyx accrescent, strongly ribbed in fruit, 2.2mm long, glabrous or sparse pubescent, bilabiate. Upper lip 3-lobed. Lobes to 2.3mm long, linear, purple. Lower lip with 2 shallow lobes. Lobes acute, to .5mm long, pubescent. Fruit an achene to 4mm long, tan.
Flowering - June - September.
Habitat - Rich woods, slopes, ravines, moist thickets.
Origin - Native to U.S and Asia.
Other info. - This is probably one of the easiest plants to identify in the field. Nothing else growing in the state looks like it. The purplish stems, drooping fruits, and tiny whitish flowers with the distinctive calyx are all good characteristics for identifying the species. Our plants belong to variety leptostachya. Another variety, var. confertifolia Fern., ranges in the eastern U.S. and is not found in our range. This latter variety has more densely pubescent stems and leaves, and the leaves are strictly crenate.
Some authors divide the plant into its own family, the Phrymaceae.
Stems - To +50cm tall, simple or branching in inflorescence, retrorse pubescent, erect, sub-hollow, 4-angled (the angles rounded), purplish, with swollen purple areas on stem above each node.
Leaves - Opposite, decussate, petiolate. Petioles to 4cm long, antrorse pubescent, reduced above. Blades ovate to lance-ovate, acute to acuminate, truncate to rounded at base (the tissue abruptly contracted and then decurrent on petiole to form minute wing to .5mm broad), coarse crenate -serrate, pubescent, to +10cm long, +6cm broad. Blades near base of plant smaller and broadly ovate.
Inflorescence - Terminal and axillary spikiform racemes. Flowers decussate and spreading at anthesis, quickly reflexing in fruit. Pedunle purple, pubescent, 4-angled, purple. Each flower subtended by linear bract to 1.5mm long. Flowers on very short pedicels to .3mm long.
Flowers - Corolla bilabiate, whitish internally, often pinkish to purplish tinged externally. Corolla tube to 3.1mm long, glabrous externally. Upper lip purplish externally, emarginate to shallowly 2-lobed, 2.5-3mm broad, 2.5mm long. Lower lip 3-lobed, 4.5mm broad, 4mm long, pubescent at apex of throat. Stamens 4, didynamous, adnate near apex of corolla tube, included. Filaments white, glabrous, to 2.1mm long. Anthers pale yellow, .2mm long. Style 3mm long, glabrous, white, included. Ovary superior, green, terete, 1.3mm long, unilocular, with 1 ovule. Calyx accrescent, strongly ribbed in fruit, 2.2mm long, glabrous or sparse pubescent, bilabiate. Upper lip 3-lobed. Lobes to 2.3mm long, linear, purple. Lower lip with 2 shallow lobes. Lobes acute, to .5mm long, pubescent. Fruit an achene to 4mm long, tan.
Flowering - June - September.
Habitat - Rich woods, slopes, ravines, moist thickets.
Origin - Native to U.S and Asia.
Other info. - This is probably one of the easiest plants to identify in the field. Nothing else growing in the state looks like it. The purplish stems, drooping fruits, and tiny whitish flowers with the distinctive calyx are all good characteristics for identifying the species. Our plants belong to variety leptostachya. Another variety, var. confertifolia Fern., ranges in the eastern U.S. and is not found in our range. This latter variety has more densely pubescent stems and leaves, and the leaves are strictly crenate.
Some authors divide the plant into its own family, the Phrymaceae.
0
0
文章
Dummer. ゛☀
2017年07月12日
Family - Scrophulariaceae
Stems - To +1m tall, herbaceous, erect but reclining with age, hollow, somewhat 4-angled (the angles very rounded), green but with purple vertical stripes in the internodes, mostly glabrous but with vertical lines of curled hairs in the internodes (the hairs multicellular, use a leans to see).
Leaves - Opposite, short-petiolate, decussate. Petioles to 1cm long, mostly glabrous but with a few multicellular hairs on the margins. Blades linear-oblong to oblong-lanceolate, to +10cm long, 3cm broad, deep green above, lighter below, sparse pubescent above and below, shallowly pinnately lobed. Each lobe with crenulate-serrulate margins. Lateral veins of leaf impressed above, expressed below. Veins in a minute reticulate pattern (visible abaxially).
Inflorescence - Terminal and axillary bracteate spikes to +/-10cm long (tall). Each flower subtended by a foliaceous bract. Bracts with a distinctly bent petiole and a pair of basal auricles (auricles spreading laterally), folded in at least the basal 1/2, accrescent, +/-1.5cm long in flower, with a few marginal hairs otherwise glabrous, with crenulate-serrulate margins. Flowers of the spike arranged in a "pinwheel" fashion.
Flowers - Corolla white, +/-2.5cm long, strongly compressed, bilabiate, zygomorphic, glabrous externally. Upper lip single-lobed, galeate, +1cm long. Lower lip +1cm long, 3-lobed at the apex, with 2 central folds leading into the throat of the corolla (the folds bearded in the basal 1/2). Lobes of the lower lip rounded, 3-4mm long, 2-3mm broad. Stamens 4, included in the galea of the upper lip. Filaments thin, translucent-white, mostly glabrous but with some hairs at the base, 2-2.5cm long, compressed. Anthers yellow-brown, 3-4mm long. Style white, 3cm long, glabrous. Stigma minute and green. Ovary green, conic, slightly compressed, glabrous, 3mm long in flower, with a swollen nectariferous base, 2-locular. Ovules many. Placentation axile. Calyx green, 2-lobed, to 1.4cm long in flower, accrescent. Lobes with orbicular appendages at the apex.
Flowering - August - October.
Habitat - Spring branches, calcareous spring-fed swampy meadows, moist limestone ledges.
Origin - Native to U.S.
Other info. - This striking plant is found only in the Ozark region of Missouri. The plant is unmistakable in the field because of the "pinwheel" arrangement of its flowers. I do not think I captured this very well in the pics. It is really easy to see and the first thing everyone notices about the plant. The white flowers of the plant are easily seen along the spring branches and moist meadows where it grows.
Stems - To +1m tall, herbaceous, erect but reclining with age, hollow, somewhat 4-angled (the angles very rounded), green but with purple vertical stripes in the internodes, mostly glabrous but with vertical lines of curled hairs in the internodes (the hairs multicellular, use a leans to see).
Leaves - Opposite, short-petiolate, decussate. Petioles to 1cm long, mostly glabrous but with a few multicellular hairs on the margins. Blades linear-oblong to oblong-lanceolate, to +10cm long, 3cm broad, deep green above, lighter below, sparse pubescent above and below, shallowly pinnately lobed. Each lobe with crenulate-serrulate margins. Lateral veins of leaf impressed above, expressed below. Veins in a minute reticulate pattern (visible abaxially).
Inflorescence - Terminal and axillary bracteate spikes to +/-10cm long (tall). Each flower subtended by a foliaceous bract. Bracts with a distinctly bent petiole and a pair of basal auricles (auricles spreading laterally), folded in at least the basal 1/2, accrescent, +/-1.5cm long in flower, with a few marginal hairs otherwise glabrous, with crenulate-serrulate margins. Flowers of the spike arranged in a "pinwheel" fashion.
Flowers - Corolla white, +/-2.5cm long, strongly compressed, bilabiate, zygomorphic, glabrous externally. Upper lip single-lobed, galeate, +1cm long. Lower lip +1cm long, 3-lobed at the apex, with 2 central folds leading into the throat of the corolla (the folds bearded in the basal 1/2). Lobes of the lower lip rounded, 3-4mm long, 2-3mm broad. Stamens 4, included in the galea of the upper lip. Filaments thin, translucent-white, mostly glabrous but with some hairs at the base, 2-2.5cm long, compressed. Anthers yellow-brown, 3-4mm long. Style white, 3cm long, glabrous. Stigma minute and green. Ovary green, conic, slightly compressed, glabrous, 3mm long in flower, with a swollen nectariferous base, 2-locular. Ovules many. Placentation axile. Calyx green, 2-lobed, to 1.4cm long in flower, accrescent. Lobes with orbicular appendages at the apex.
Flowering - August - October.
Habitat - Spring branches, calcareous spring-fed swampy meadows, moist limestone ledges.
Origin - Native to U.S.
Other info. - This striking plant is found only in the Ozark region of Missouri. The plant is unmistakable in the field because of the "pinwheel" arrangement of its flowers. I do not think I captured this very well in the pics. It is really easy to see and the first thing everyone notices about the plant. The white flowers of the plant are easily seen along the spring branches and moist meadows where it grows.
0
0
文章
Dummer. ゛☀
2017年07月12日
Family - Lamiaceae
Stems - To .75m tall, 4-angled, glabrous or sparsely hairy, branching, herbaceous, strongly aromatic.
Leaves - Opposite, petiolate, glabrous, entire or with a few coarse teeth, lanceolate, lanceolate-ovate or ovate.
Inflorescence - Terminal clusters of whorled flowers (vertcilillasters).
Flowers - Corolla white, bilabiate, to 1cm long. Stamens exerted beyond corolla. Calyx 5-lobed, upper lobe expanded into a lid or cap over others.
Flowering - July - October.
Habitat - Cultivated but occasionally escaped to waste ground.
Origin - Native to Asia and Africa.
Other info. - There are many different varieties of basil in cultivation. All are delicious. This species is often planted in gardens along with tomatoes, Lycopersicon esculentum, and the two are essential in good Italian sauces. My parents had basil growing year-round to cook with. It is such an easy plant to grow that no one should have to be without fresh basil. The dried stuff is sacrilege.
Stems - To .75m tall, 4-angled, glabrous or sparsely hairy, branching, herbaceous, strongly aromatic.
Leaves - Opposite, petiolate, glabrous, entire or with a few coarse teeth, lanceolate, lanceolate-ovate or ovate.
Inflorescence - Terminal clusters of whorled flowers (vertcilillasters).
Flowers - Corolla white, bilabiate, to 1cm long. Stamens exerted beyond corolla. Calyx 5-lobed, upper lobe expanded into a lid or cap over others.
Flowering - July - October.
Habitat - Cultivated but occasionally escaped to waste ground.
Origin - Native to Asia and Africa.
Other info. - There are many different varieties of basil in cultivation. All are delicious. This species is often planted in gardens along with tomatoes, Lycopersicon esculentum, and the two are essential in good Italian sauces. My parents had basil growing year-round to cook with. It is such an easy plant to grow that no one should have to be without fresh basil. The dried stuff is sacrilege.
0
0
文章
Dummer. ゛☀
2017年07月12日
Family - Lamiaceae
Stems - To +1m tall, multiple from base, from fibrous roots, tomentose, 4-angled, branching, herbaceous, erect. Plant fragrant.
Leaves - Opposite, decussate, petiolate. Petiole to +/-4cm long, tomentose, with single adaxial groove. Blade triangular to triangular-ovate or ovate, to +/-10cm long, +/-6cm broad, crenate-serrate, reduced upward, pubescent above and below (more so below), grayish-green below, fragrant.
Inflorescence - Terminal clusters of whorled flowers (verticillasters). Brats accompanying clusters barely or not exceeding the flowers.
Flowers - Sessile. Corolla whitish-pink, spotted with purple internally, bilabiate. Corolla tube to +/-5mm long, abruptly expanded near apex, tomentose. Upper lip 2.1mm long, 2.4mm broad, notched or shallow 2-lobed. Lower lip with 2 shallow lateral lobes and large central lobe. Central lobe +/-3mm long, +/-4mm broad, toothed at apex, bearded near throat. Stamens 4, didynamous, exserted just beyond upper lip, adnate at apex of constricted portion of corolla tube. Filaments to -3mm long, glabrous, white to pinkish-white. Anthers rose-purple, .6mm broad. Style 8mm long, glabrous, pinkish-white. Stigma 2-lobed. Ovary of 4 nutlets. Nutlets green, tuberculate. Calyx tube to 3mm long, 1.1mm in diameter, 5-lobed, with 15 nerves (ridges), tomentose. Lobes subequal, attenuate, to 1.8mm long. Calyx accrescent.
Flowering - June - September.
Habitat - Waste ground, open woods, roadsides, railroads. Also cultivated.
Origin - Native to Europe.
Other info. - This species is known to have intoxicating effects on domestic cats. Each cat reacts differently to it. The plant is easy to grow and common in the state. Why buy it when you can just go out and pick it?
Stems - To +1m tall, multiple from base, from fibrous roots, tomentose, 4-angled, branching, herbaceous, erect. Plant fragrant.
Leaves - Opposite, decussate, petiolate. Petiole to +/-4cm long, tomentose, with single adaxial groove. Blade triangular to triangular-ovate or ovate, to +/-10cm long, +/-6cm broad, crenate-serrate, reduced upward, pubescent above and below (more so below), grayish-green below, fragrant.
Inflorescence - Terminal clusters of whorled flowers (verticillasters). Brats accompanying clusters barely or not exceeding the flowers.
Flowers - Sessile. Corolla whitish-pink, spotted with purple internally, bilabiate. Corolla tube to +/-5mm long, abruptly expanded near apex, tomentose. Upper lip 2.1mm long, 2.4mm broad, notched or shallow 2-lobed. Lower lip with 2 shallow lateral lobes and large central lobe. Central lobe +/-3mm long, +/-4mm broad, toothed at apex, bearded near throat. Stamens 4, didynamous, exserted just beyond upper lip, adnate at apex of constricted portion of corolla tube. Filaments to -3mm long, glabrous, white to pinkish-white. Anthers rose-purple, .6mm broad. Style 8mm long, glabrous, pinkish-white. Stigma 2-lobed. Ovary of 4 nutlets. Nutlets green, tuberculate. Calyx tube to 3mm long, 1.1mm in diameter, 5-lobed, with 15 nerves (ridges), tomentose. Lobes subequal, attenuate, to 1.8mm long. Calyx accrescent.
Flowering - June - September.
Habitat - Waste ground, open woods, roadsides, railroads. Also cultivated.
Origin - Native to Europe.
Other info. - This species is known to have intoxicating effects on domestic cats. Each cat reacts differently to it. The plant is easy to grow and common in the state. Why buy it when you can just go out and pick it?
0
0
文章
Dummer. ゛☀
2017年07月12日
Family - Lamiaceae
Stems - Simple, erect, herbaceous, 4-angled, sparse to dense pilose on the angles, from rhizomes, fragrant. Hairs of the plant multicellular.
Leaves - Opposite, short-petiolate, decussate. Petioles to 2mm long, ciliate=margined. Blades ovate to ovate-lanceolate, coarse-shallow serrate, acute, ciliate-margined, pubescent on both surfaces, with lateral veins anastomosing before the margin of the blade, to +7cm long, +4cm broad. Uppermost leaves subtending the inflorescence reduced to bracts.
Inflorescence - Single terminal capitate cluster of flowers per plant. Cluster subtended by small foliaceous bracts. Bracts to +/-1.5cm long, green or slightly pink or purple tinged. Flowers +/-50 per cluster, sessile.
Flowers - Corolla whitish with purple spots, bilabiate. Corolla tube to 1.3cm long, sparse glandular pubescent externally, pubescent internally. Lower lip single-lobed. The lobe to 1.5cm long, 6-7mm broad, mostly white but with purple spots internally, glabrous internally, glandular and pubescent externally, with an apical appendage. Appendage with 2 linear lobes. Upper lip single-lobes. Lobe thin, arching, to 1.4cm long, 2mm broad, simple and glandular pubescent externally, with the apex reflexed or not. Apex ciliate. Stamens 2, adnate at the apex of the corolla tube, slightly exserted from under the upper lip. Filaments white, glabrous, +1.5cm long. Anthers purplish-brown, 2.5mm long. Style filiform, +3cm long, glabrous, whitish to purple-tinged at the apex. Stigma 2-lobed. Lobes .6mm long. Ovary 4-lobed at the apex, green, glabrous, 1mm long and broad. Calyx tube to -1cm long in flower, -2mm in diameter, 13-ribbed, sparse pilose, 5-lobed. Lobes linear, needle-like, spreading, 2.5-3mm long in flower, ciliate.
Flowering - April - June.
Habitat - Rocky or dry open woods, borders of glades, railroads. Usually an acid substrata.
Origin - Native to U.S.
Other info. - This little species can be found in the southeastern half of Missouri and mostly in the Ozark region of the state. The plant is the earliest of the genus to flower in Missouri. It is also the smallest of the genus. The plant is easy to ID because of its big, whitish to pink, zygomorphic flowers.
This species is very fragrant and a tea can be made from the leaves and flowers of the plant.
Steyermark had this species listed as M. russeliana Nutt. but it has been determined that M. russeliana is a different species that occurs in states to the south of Missouri.
Stems - Simple, erect, herbaceous, 4-angled, sparse to dense pilose on the angles, from rhizomes, fragrant. Hairs of the plant multicellular.
Leaves - Opposite, short-petiolate, decussate. Petioles to 2mm long, ciliate=margined. Blades ovate to ovate-lanceolate, coarse-shallow serrate, acute, ciliate-margined, pubescent on both surfaces, with lateral veins anastomosing before the margin of the blade, to +7cm long, +4cm broad. Uppermost leaves subtending the inflorescence reduced to bracts.
Inflorescence - Single terminal capitate cluster of flowers per plant. Cluster subtended by small foliaceous bracts. Bracts to +/-1.5cm long, green or slightly pink or purple tinged. Flowers +/-50 per cluster, sessile.
Flowers - Corolla whitish with purple spots, bilabiate. Corolla tube to 1.3cm long, sparse glandular pubescent externally, pubescent internally. Lower lip single-lobed. The lobe to 1.5cm long, 6-7mm broad, mostly white but with purple spots internally, glabrous internally, glandular and pubescent externally, with an apical appendage. Appendage with 2 linear lobes. Upper lip single-lobes. Lobe thin, arching, to 1.4cm long, 2mm broad, simple and glandular pubescent externally, with the apex reflexed or not. Apex ciliate. Stamens 2, adnate at the apex of the corolla tube, slightly exserted from under the upper lip. Filaments white, glabrous, +1.5cm long. Anthers purplish-brown, 2.5mm long. Style filiform, +3cm long, glabrous, whitish to purple-tinged at the apex. Stigma 2-lobed. Lobes .6mm long. Ovary 4-lobed at the apex, green, glabrous, 1mm long and broad. Calyx tube to -1cm long in flower, -2mm in diameter, 13-ribbed, sparse pilose, 5-lobed. Lobes linear, needle-like, spreading, 2.5-3mm long in flower, ciliate.
Flowering - April - June.
Habitat - Rocky or dry open woods, borders of glades, railroads. Usually an acid substrata.
Origin - Native to U.S.
Other info. - This little species can be found in the southeastern half of Missouri and mostly in the Ozark region of the state. The plant is the earliest of the genus to flower in Missouri. It is also the smallest of the genus. The plant is easy to ID because of its big, whitish to pink, zygomorphic flowers.
This species is very fragrant and a tea can be made from the leaves and flowers of the plant.
Steyermark had this species listed as M. russeliana Nutt. but it has been determined that M. russeliana is a different species that occurs in states to the south of Missouri.
0
0
文章
Dummer. ゛☀
2017年07月12日
Family - Aizoaceae
Stems - Prostrate to ascending, multiple from base, glabrous, dichotomously branched, from branched taproot, with slightly swollen nodes.
Leaves - In whorls of 4 to 8, sessile or tapering to a short petiole, spatulate to narrowly oblanceolate, entire, glabrous, to 2cm long, +4mm broad, acute, with single prominent midvein.
Inflorescence - 1-5 pedicillate flowers from each leaf axil. Pedicels to +/-10mm long, glabrous, filiform.
Flowers - Calyx lobes to 2mm long, glabrous, white internally, externally with 3 green vertical lines(united at apex) and white margins. Stamens 3, white, glabrous, 1.4mm long. Anthers yellow, to .3mm long. Ovary of 3 united carpels, globose, superior, glabrous, green. Placentation axile. Styles to .4mm long. Capsule to 2.2mm long, ovoid, many seeded. Seeds brown, shiny, reniform, .6mm broad.
Flowering - May - November.
Habitat - Waste ground, disturbed sites, glades, roadsides, railroads.
Origin - Native to Central and South America.
Other info. - This miniature weed can be found throughout Missouri and much of the U.S.
The plant is simple to ID in the field because of its whorled leaves, pedicillate flowers, and prostrate nature. Although the plant is typically found as a small specimen, it is quite capable of forming a large mat.
Some authors place the plant in another family, the Molluginaceae.
Stems - Prostrate to ascending, multiple from base, glabrous, dichotomously branched, from branched taproot, with slightly swollen nodes.
Leaves - In whorls of 4 to 8, sessile or tapering to a short petiole, spatulate to narrowly oblanceolate, entire, glabrous, to 2cm long, +4mm broad, acute, with single prominent midvein.
Inflorescence - 1-5 pedicillate flowers from each leaf axil. Pedicels to +/-10mm long, glabrous, filiform.
Flowers - Calyx lobes to 2mm long, glabrous, white internally, externally with 3 green vertical lines(united at apex) and white margins. Stamens 3, white, glabrous, 1.4mm long. Anthers yellow, to .3mm long. Ovary of 3 united carpels, globose, superior, glabrous, green. Placentation axile. Styles to .4mm long. Capsule to 2.2mm long, ovoid, many seeded. Seeds brown, shiny, reniform, .6mm broad.
Flowering - May - November.
Habitat - Waste ground, disturbed sites, glades, roadsides, railroads.
Origin - Native to Central and South America.
Other info. - This miniature weed can be found throughout Missouri and much of the U.S.
The plant is simple to ID in the field because of its whorled leaves, pedicillate flowers, and prostrate nature. Although the plant is typically found as a small specimen, it is quite capable of forming a large mat.
Some authors place the plant in another family, the Molluginaceae.
0
0
文章
Dummer. ゛☀
2017年07月12日
Family - Lamiaceae
Stems - To .75m tall, glabrous, 4-angled, from creeping rhizomes.
Leaves - Opposite, sessile or on very short petioles, ovate to ovate-lanceolate, toothed, to +7cm long, 3cm wide, glabrous above, glabrous or very sparsely pubescent below, very fragrant.
Inflorescence - Terminal spike of floral whorls (verticillasters). Bracts accompanying clusters linear, not longer than clusters.
Flowers - Corolla white to light lavender (lilac), 2-3mm long, 4-lobed, regular. Calyx 1.5-2mm long, 5-lobed, pubescent.
Flowering - June - October.
Habitat - Moist to wet ground.
Origin - Native to Europe.
Other info. - This is the familiar "Spearmint" used to flavor teas, candies, and other products. The leaves give off the very distinctive scent when crushed.
The plant is a vigorous grower and is cultivated worldwide. It can be easily grown by the home gardener if moist soil is provided.
Stems - To .75m tall, glabrous, 4-angled, from creeping rhizomes.
Leaves - Opposite, sessile or on very short petioles, ovate to ovate-lanceolate, toothed, to +7cm long, 3cm wide, glabrous above, glabrous or very sparsely pubescent below, very fragrant.
Inflorescence - Terminal spike of floral whorls (verticillasters). Bracts accompanying clusters linear, not longer than clusters.
Flowers - Corolla white to light lavender (lilac), 2-3mm long, 4-lobed, regular. Calyx 1.5-2mm long, 5-lobed, pubescent.
Flowering - June - October.
Habitat - Moist to wet ground.
Origin - Native to Europe.
Other info. - This is the familiar "Spearmint" used to flavor teas, candies, and other products. The leaves give off the very distinctive scent when crushed.
The plant is a vigorous grower and is cultivated worldwide. It can be easily grown by the home gardener if moist soil is provided.
0
0
文章
Dummer. ゛☀
2017年07月12日
Family - Lamiaceae
Stems - To 1m tall, erect, branching, 4-angled, herbaceous, from fibrous roots and horizontal rhizomes, glabrous except for tufts of hairs at nodes in leaf axils, with rounded angles, hollow, with single vertical groove on each flat side of the stem.
Leaves - Opposite, decussate, sessile or short-petiolate, pinnately lobed below, becoming nearly entire near tip of stem, to +/-12cm long, 7cm broad, glabrous or sometimes scabrous near base of blade, opposite leaves connected by a thin hairy strip of tissue which encircles the stem.
Inflorescence - Verticillasters in the upper 2/3 of the stem. Each cluster of a leaf axil with +/-20 flowers. Flowers sessile.
Flowers - Corolla whitish, to 3mm long, glabrous externally, with dense tufts of hairs near apex of tube internally, subequally 4-lobed. The lobes rounded, -1mm long. Stamens 2, exserted, adnate at apex of corolla tube. Filaments to 2mm long, white, glabrous. Anthers pale yellow or with a purplish tinge, .4mm broad. Style exserted, to 3mm long, white, glabrous, expanded slightly at base. Stigma 2-lobed, often with a purplish tinge. Ovary 4-lobed. The lobes deep purple with whitish glands at apex. Calyx green, glabrous, the tube to 1mm long, 5-lobed (weakly bilabiate). Lobes acuminate, to 1.3mm long, the lower 4 with minute teeth on their margins. The single upper lobe (tooth) shallowly notched at the apex.
Flowering - June - October.
Habitat - Moist to wet locations.
Origin - Native to U.S.
Other info. - This is a common plant along pond, lake, and stream margins. The plant typically has green stems but if grown in harsh conditions the stems will become reddish-brown. Although this plant is in the mint family it has no minty odor. The leaves and small white clusters of flowers make this species easy to ID in the field.
Stems - To 1m tall, erect, branching, 4-angled, herbaceous, from fibrous roots and horizontal rhizomes, glabrous except for tufts of hairs at nodes in leaf axils, with rounded angles, hollow, with single vertical groove on each flat side of the stem.
Leaves - Opposite, decussate, sessile or short-petiolate, pinnately lobed below, becoming nearly entire near tip of stem, to +/-12cm long, 7cm broad, glabrous or sometimes scabrous near base of blade, opposite leaves connected by a thin hairy strip of tissue which encircles the stem.
Inflorescence - Verticillasters in the upper 2/3 of the stem. Each cluster of a leaf axil with +/-20 flowers. Flowers sessile.
Flowers - Corolla whitish, to 3mm long, glabrous externally, with dense tufts of hairs near apex of tube internally, subequally 4-lobed. The lobes rounded, -1mm long. Stamens 2, exserted, adnate at apex of corolla tube. Filaments to 2mm long, white, glabrous. Anthers pale yellow or with a purplish tinge, .4mm broad. Style exserted, to 3mm long, white, glabrous, expanded slightly at base. Stigma 2-lobed, often with a purplish tinge. Ovary 4-lobed. The lobes deep purple with whitish glands at apex. Calyx green, glabrous, the tube to 1mm long, 5-lobed (weakly bilabiate). Lobes acuminate, to 1.3mm long, the lower 4 with minute teeth on their margins. The single upper lobe (tooth) shallowly notched at the apex.
Flowering - June - October.
Habitat - Moist to wet locations.
Origin - Native to U.S.
Other info. - This is a common plant along pond, lake, and stream margins. The plant typically has green stems but if grown in harsh conditions the stems will become reddish-brown. Although this plant is in the mint family it has no minty odor. The leaves and small white clusters of flowers make this species easy to ID in the field.
0
0
文章
Dummer. ゛☀
2017年07月12日
Family - Verbenaceae
Stems - Erect to ascending, rooting at nodes, to +/-45cm tall, herbaceous, (4)-angled, green to purple and often with purple vertical striations, appearing glabrous but with malpighian trichomes (use lens to see).
Leaves - Opposite, decussate, tapering to the base, lanceolate, serrate, +/-5cm long, +/-2cm broad, with impressed veins above, expressed veins below, strigillose on both surfaces.
Inflorescence - Dense globose to cylindric capitate clusters of flowers on a long axillary peduncle. Peduncles from the upper leaf axils, to +/-9cm long, pubescent as the stem, expanding just below the flower cluster. Each flower subtended by one bract. Bracts to 3mm long, acute, broadest in the middle, tapering to the base, glabrous internally, strigose externally, often purplish in the apical half, to -3mm broad.
Flowers - Corolla white, glabrous, 4-lobed, +/-4mm long. The upper and lower lobes more or less truncate at the apex. The lateral lobes slightly more rounded. Lobes to 1.5mm long, 1mm broad, unequal. Stamens 4, included, didynamous, adnate near the middle of the corolla tube. Filaments wanting. Anthers yellow, .3-.4mm broad. Ovary superior, greenish, glabrous, .5mm long in flower. Style short, green, glabrous, .5mm long. Stigma green, sub-globose, .3mm in diameter, slightly nodding or facing "forward." Calyx 2-lobed. The tube whitish, 1mm long. The lobes opposing, to 1.4mm long, cupped, whitish, acute, with short hairs on the outer surfaces and longer hairs on the midrib, glabrous internally.
Flowering - May - September.
Habitat - Moist to wet soils.
Origin - Native to U.S.
Other info. - The actual flowers and racemes of the plant are small but the plant forms colonies and is easily found in wet, muddy areas. Close inspection of the flowers reveals that they are typical of the family Verbenaceae with a mostly irregular corolla and 4 stamens borne on and included within the corolla. This species is very common.
A synonym is Phyla lanceolata (Michx.) Greene-Rydberg.
Stems - Erect to ascending, rooting at nodes, to +/-45cm tall, herbaceous, (4)-angled, green to purple and often with purple vertical striations, appearing glabrous but with malpighian trichomes (use lens to see).
Leaves - Opposite, decussate, tapering to the base, lanceolate, serrate, +/-5cm long, +/-2cm broad, with impressed veins above, expressed veins below, strigillose on both surfaces.
Inflorescence - Dense globose to cylindric capitate clusters of flowers on a long axillary peduncle. Peduncles from the upper leaf axils, to +/-9cm long, pubescent as the stem, expanding just below the flower cluster. Each flower subtended by one bract. Bracts to 3mm long, acute, broadest in the middle, tapering to the base, glabrous internally, strigose externally, often purplish in the apical half, to -3mm broad.
Flowers - Corolla white, glabrous, 4-lobed, +/-4mm long. The upper and lower lobes more or less truncate at the apex. The lateral lobes slightly more rounded. Lobes to 1.5mm long, 1mm broad, unequal. Stamens 4, included, didynamous, adnate near the middle of the corolla tube. Filaments wanting. Anthers yellow, .3-.4mm broad. Ovary superior, greenish, glabrous, .5mm long in flower. Style short, green, glabrous, .5mm long. Stigma green, sub-globose, .3mm in diameter, slightly nodding or facing "forward." Calyx 2-lobed. The tube whitish, 1mm long. The lobes opposing, to 1.4mm long, cupped, whitish, acute, with short hairs on the outer surfaces and longer hairs on the midrib, glabrous internally.
Flowering - May - September.
Habitat - Moist to wet soils.
Origin - Native to U.S.
Other info. - The actual flowers and racemes of the plant are small but the plant forms colonies and is easily found in wet, muddy areas. Close inspection of the flowers reveals that they are typical of the family Verbenaceae with a mostly irregular corolla and 4 stamens borne on and included within the corolla. This species is very common.
A synonym is Phyla lanceolata (Michx.) Greene-Rydberg.
0
0
Ueca
2017年07月12日
Our Echeveria buds are protected by the legendary guardian deity of fertility!
The cup has been taped on to keep moisture in, which encourages more roots to be grown. Last I checked, their roots were all at over 4 cm long!
The cup has been taped on to keep moisture in, which encourages more roots to be grown. Last I checked, their roots were all at over 4 cm long!
1
0
Ryry0521：SO COOL 😲😲😲
文章
Dummer. ゛☀
2017年07月12日
Family - Rubiaceae
Stems - To 30cm tall, multiple from base, from taproot, erect, herbaceous, 4-angled, glabrous, dichotomously branching.
Leaves - Opposite, sessile, linear, glabrous to scabrous, entire, to +3cm long, 3mm broad, acute.
Stipule at base of leaves.
Inflorescence - Flowers many near apex of stems forming a corymbiform cyme. Each division of inflorescence subtended by a pair of foliaceous bracts (reduced leaves).
Flowers - Corolla 4-lobed, white. Tube to 3.3mm long, glabrous externally, densely pubescent internally. Lobes spreading, glabrous externally, densely pubescent internally, to 3mm long. Stamens 4, alternating with corolla lobes, adnate at apex of corolla tube. Filaments to 1mm long, whitish. Anthers -2mm long, blue-purple. Style glabrous, 2.7mm long, greenish-white. Hypanthium to 1.1mm long, glabrous. Sepals lanceolate, acute, 1.6mm long, with few marginal cilia near base or not.
Flowering - May - October.
Habitat - Dry exposed areas of loess hills, rocky ledges, limestone bluffs and glades.
Origin - Native to U.S.
Other info. - This plant is compact, densely branched, and produces many flowers. It is really an attractive little plant. It can be found in the Ozark section of the state north to a few eastern counties that border the Missouri river. H. nigricans is absent from most of the northern part of the state but reappears in a few northwest counties where the loess hills are found.
A synonym is Hedyotis nigricans (Lam.) Fosb.
Stems - To 30cm tall, multiple from base, from taproot, erect, herbaceous, 4-angled, glabrous, dichotomously branching.
Leaves - Opposite, sessile, linear, glabrous to scabrous, entire, to +3cm long, 3mm broad, acute.
Stipule at base of leaves.
Inflorescence - Flowers many near apex of stems forming a corymbiform cyme. Each division of inflorescence subtended by a pair of foliaceous bracts (reduced leaves).
Flowers - Corolla 4-lobed, white. Tube to 3.3mm long, glabrous externally, densely pubescent internally. Lobes spreading, glabrous externally, densely pubescent internally, to 3mm long. Stamens 4, alternating with corolla lobes, adnate at apex of corolla tube. Filaments to 1mm long, whitish. Anthers -2mm long, blue-purple. Style glabrous, 2.7mm long, greenish-white. Hypanthium to 1.1mm long, glabrous. Sepals lanceolate, acute, 1.6mm long, with few marginal cilia near base or not.
Flowering - May - October.
Habitat - Dry exposed areas of loess hills, rocky ledges, limestone bluffs and glades.
Origin - Native to U.S.
Other info. - This plant is compact, densely branched, and produces many flowers. It is really an attractive little plant. It can be found in the Ozark section of the state north to a few eastern counties that border the Missouri river. H. nigricans is absent from most of the northern part of the state but reappears in a few northwest counties where the loess hills are found.
A synonym is Hedyotis nigricans (Lam.) Fosb.
0
0
文章
Dummer. ゛☀
2017年07月11日
Family - Rubiaceae
Stems - Vegetative stems repent, to +50cm long. Flowering stems erect, to 30cm tall, 4-angled, herbaceous, glabrous or with some pubescence at nodes, stoloniferous. Nodes of flowering stem fairly evenly spaced at about 3.5cm apart.
Leaves - In whorls of typically 8-10. Leaves glabrous above, antrorse strigillose on margins and below, oblong-linear, sessile, mucronate, to 3cm long, 8-9mm broad.
Inflorescence - Terminal loose umbellate cymes. Peduncles to +6cm long.
Flowers - Corolla white, 4-lobed, glabrous externally. Corolla tube to 2mm long, glandular pubescent at apex of throat internally. Lobes 3-4mm long. Stamens 4, alternating with corolla lobes, slightly exserted, adnate at apex of corolla tube. Filaments .5mm long. Anthers .3mm long, brownish. Ovary 2-carpellate, inferior, densely uncinate pubescent, subglobose. Styles 2, translucent, 1mm long. Stigmas globose.
Flowering - April - May.
Habitat - Cultivated.
Origin - Native to Europe.
Other info. - This species of Galium is very easy to distinguish from our native species because it has distinctive whorls of 8-10 leaves per node and showy terminal inflorescences. This species is fast growing and could easily become established if it escapes cultivation. The plant contains coumarins and gives off a distinctive "hay" scent when cut, hence the species name.
Stems - Vegetative stems repent, to +50cm long. Flowering stems erect, to 30cm tall, 4-angled, herbaceous, glabrous or with some pubescence at nodes, stoloniferous. Nodes of flowering stem fairly evenly spaced at about 3.5cm apart.
Leaves - In whorls of typically 8-10. Leaves glabrous above, antrorse strigillose on margins and below, oblong-linear, sessile, mucronate, to 3cm long, 8-9mm broad.
Inflorescence - Terminal loose umbellate cymes. Peduncles to +6cm long.
Flowers - Corolla white, 4-lobed, glabrous externally. Corolla tube to 2mm long, glandular pubescent at apex of throat internally. Lobes 3-4mm long. Stamens 4, alternating with corolla lobes, slightly exserted, adnate at apex of corolla tube. Filaments .5mm long. Anthers .3mm long, brownish. Ovary 2-carpellate, inferior, densely uncinate pubescent, subglobose. Styles 2, translucent, 1mm long. Stigmas globose.
Flowering - April - May.
Habitat - Cultivated.
Origin - Native to Europe.
Other info. - This species of Galium is very easy to distinguish from our native species because it has distinctive whorls of 8-10 leaves per node and showy terminal inflorescences. This species is fast growing and could easily become established if it escapes cultivation. The plant contains coumarins and gives off a distinctive "hay" scent when cut, hence the species name.
0
0
文章
Colour_
2017年07月11日
管花杜鹃形态特征
常绿直立灌木，高1-4(--6)米。枝条细长，幼枝带紫红色，疏生鳞片。叶散生 幼枝上，披针状椭圆形或披针状长圆形，长(3--)4-8(--15)厘米，宽1-3(--4) 厘米，顶端锐尖，基部楔形，上面暗绿色，有光泽，被褐色鳞片，鳞片相距为其直径的 1--3倍，下面苍绿色，被密而不等大的褐色至暗褐色的鳞片，相距为其直径或不及，侧脉明显;叶柄长5-12毫米，被鳞片。花序顶生或腋生，短总状，通常有4-6花;花梗长4-8毫米，纤细，带红色，有鳞片;花萼小，长约1毫米，浅5裂或仅为边檐 状，无鳞片;花冠管状，一面稍臌胀，长1.8-2.5厘米，橘红、朱红或肉红色，口部 浅5裂，裂片长圆形，直立;雄蕊10，花药短小，卵圆形，花丝下部被密毛;花柱下 部常被毛，偶尔无毛。蒴果长圆形，长8-10毫米，密被鳞片。花期7月，果期10 月。
管花杜鹃的繁殖方式
扦插繁殖
扦插繁殖是杜鹃花栽培中应用最多的繁殖方法，一般在5-6月份剪取健壮的半木质化的新枝，长约5-8厘米，剪除下部叶片，保留顶叶2-3片作插穗，插穗基部最好用吲哚丁酸或ABT生根粉等溶液浸蘸处理，然后扦插在疏松透气、富含腐植质的酸性土壤中，温度保持在20-25℃，遮阴并经常喷雾保湿，以促进萌发新根。
嫩枝繁殖
嫩枝繁殖是用劈接对于难以成活的名贵品种如西鹃等，先剪去嫩枝约3-4厘米作接穗，将基部用利刀削成楔形，用毛鹃作砧木，采用嫩枝劈接，然后置阴棚下用塑料薄膜绑扎，并用塑料袋将接穗和砧木一起罩住保湿。
管花杜鹃的养殖方法
肥水管理
杜鹃生长发育要求酸性土壤。由于北方土壤多偏碱性，因此盆土需用腐熟的松针叶土等腐植土混合配制。杜鹃的根系为须状细根，对肥料浓度及水质的要求严格，施肥时要遵循适时适量、薄肥勤施的原则。春季开花前为促使枝叶及花蕾生长，可每月追施一次磷肥。花后施1-2次氮磷为主的混合肥料。9-10月份孕蕾期施1-2次磷肥。在生长期、开花期肥水要求较多，冬季休眠、夏季生长缓慢时要控制肥水，以防烂根。杜鹃花喜湿润和凉爽的环境，北方气候干燥，应及时浇水并喷雾，以保持较高空气湿度。浇花水以矾肥水及雨水为好，如用常用水需加入少量硫酸亚铁及食醋。也可将西瓜或西红柿切成小块施入，对于改善土质及花朵质量也有良好效果。
整形修剪
为加速植株盛开，杜鹃常通过摘心来促发新枝，对于花朵簇拥、影响花形的可以提早疏蕾，这样不但使当年花大色鲜，也有利于植株来年生长开花。杜鹃萌发力强，枝条严重影响植株生长发育，降低其观赏性和商品性，因此需通过修枝来调整。修枝一般在春季花谢后及秋季进行，剪去枯枝、斜枝、徒长枝病虫枝及部分交叉枝，避免养分消耗，使整个植株开花丰满。
花期控制
杜鹃在秋季进行花芽分化，通过冷藏和加温处理，可以人为控制花期。要使杜鹃提前开花，可将其移至温室培养，控温在20-25℃，并经常在枝叶上喷水，保持80%以上的相对湿度，这样经过一个半月即可开花。要使杜鹃延迟开花，可将形成花蕾的杜鹃，让其一直处于低温状态，保持温度2-4℃，盆干时浇水，夏秋移出室外，2周后即可开花。
常绿直立灌木，高1-4(--6)米。枝条细长，幼枝带紫红色，疏生鳞片。叶散生 幼枝上，披针状椭圆形或披针状长圆形，长(3--)4-8(--15)厘米，宽1-3(--4) 厘米，顶端锐尖，基部楔形，上面暗绿色，有光泽，被褐色鳞片，鳞片相距为其直径的 1--3倍，下面苍绿色，被密而不等大的褐色至暗褐色的鳞片，相距为其直径或不及，侧脉明显;叶柄长5-12毫米，被鳞片。花序顶生或腋生，短总状，通常有4-6花;花梗长4-8毫米，纤细，带红色，有鳞片;花萼小，长约1毫米，浅5裂或仅为边檐 状，无鳞片;花冠管状，一面稍臌胀，长1.8-2.5厘米，橘红、朱红或肉红色，口部 浅5裂，裂片长圆形，直立;雄蕊10，花药短小，卵圆形，花丝下部被密毛;花柱下 部常被毛，偶尔无毛。蒴果长圆形，长8-10毫米，密被鳞片。花期7月，果期10 月。
管花杜鹃的繁殖方式
扦插繁殖
扦插繁殖是杜鹃花栽培中应用最多的繁殖方法，一般在5-6月份剪取健壮的半木质化的新枝，长约5-8厘米，剪除下部叶片，保留顶叶2-3片作插穗，插穗基部最好用吲哚丁酸或ABT生根粉等溶液浸蘸处理，然后扦插在疏松透气、富含腐植质的酸性土壤中，温度保持在20-25℃，遮阴并经常喷雾保湿，以促进萌发新根。
嫩枝繁殖
嫩枝繁殖是用劈接对于难以成活的名贵品种如西鹃等，先剪去嫩枝约3-4厘米作接穗，将基部用利刀削成楔形，用毛鹃作砧木，采用嫩枝劈接，然后置阴棚下用塑料薄膜绑扎，并用塑料袋将接穗和砧木一起罩住保湿。
管花杜鹃的养殖方法
肥水管理
杜鹃生长发育要求酸性土壤。由于北方土壤多偏碱性，因此盆土需用腐熟的松针叶土等腐植土混合配制。杜鹃的根系为须状细根，对肥料浓度及水质的要求严格，施肥时要遵循适时适量、薄肥勤施的原则。春季开花前为促使枝叶及花蕾生长，可每月追施一次磷肥。花后施1-2次氮磷为主的混合肥料。9-10月份孕蕾期施1-2次磷肥。在生长期、开花期肥水要求较多，冬季休眠、夏季生长缓慢时要控制肥水，以防烂根。杜鹃花喜湿润和凉爽的环境，北方气候干燥，应及时浇水并喷雾，以保持较高空气湿度。浇花水以矾肥水及雨水为好，如用常用水需加入少量硫酸亚铁及食醋。也可将西瓜或西红柿切成小块施入，对于改善土质及花朵质量也有良好效果。
整形修剪
为加速植株盛开，杜鹃常通过摘心来促发新枝，对于花朵簇拥、影响花形的可以提早疏蕾，这样不但使当年花大色鲜，也有利于植株来年生长开花。杜鹃萌发力强，枝条严重影响植株生长发育，降低其观赏性和商品性，因此需通过修枝来调整。修枝一般在春季花谢后及秋季进行，剪去枯枝、斜枝、徒长枝病虫枝及部分交叉枝，避免养分消耗，使整个植株开花丰满。
花期控制
杜鹃在秋季进行花芽分化，通过冷藏和加温处理，可以人为控制花期。要使杜鹃提前开花，可将其移至温室培养，控温在20-25℃，并经常在枝叶上喷水，保持80%以上的相对湿度，这样经过一个半月即可开花。要使杜鹃延迟开花，可将形成花蕾的杜鹃，让其一直处于低温状态，保持温度2-4℃，盆干时浇水，夏秋移出室外，2周后即可开花。
0
0
