Dendrobium polyanthum Wall.

Species

Angiosperms > Asparagales > Orchidaceae > Dendrobium

Characteristics

Stems pendulous, cylindric, usually 20-35 cm, stout, 8-13 mm in diam., fleshy, unbranched, deciduous, with many nodes, internodes 2-2.5 cm. Leaves alternate along entire stem, lanceolate or ovate-lanceolate, 8-10.5 × 2-3 cm, papery, apex obtuse and unequally bilobed; leaf sheath papery or membranous. Inflorescence arising from old stems after leaves have fallen, 1-3-flowered; peduncle penetrating 2 sheaths, cymbiform-concave, ca. 2 mm; basal sheaths 3 or 4, 2-3 mm, membranous; floral bracts pale white, ovate, 5-9 mm, membranous, apex obtuse. Pedicel and ovary yellowish green, 2-2.5 cm. Flowers spreading, pendulous; sepals and petals pale roseate or white (D. cretaceum), lip pale yellow with pale roseate tip, disk with purplish red stripes, column white, anther cap purple. Dorsal sepal narrowly lanceolate, ca. 30 × 6-8(or more) mm, 3-5-veined, subacute; lateral sepals similar in size and shape, 3-5-veined, base oblique, apex subacute; mentum narrowly conic, ca. 5 mm, obtuse. Petals narrowly oblong, ca. 30 × 7-9 mm, 3-5-veined, margin entire, apex obtuse; lip broadly obovate, shorter than wide, ca. 35 mm wide, both sides embracing column in lower half, both surfaces densely pubescent, margin irregularly denticulate. Column ca. 3 mm; anther cap elliptic-conic, densely papillate-hairy, front margin broadly emarginate, apex ± concave.
Life form perennial
Growth form herb
Growth support epiphyte
Foliage retention deciduous
Sexuality hermaphrodite
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JanFebMar
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OctNovDec
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Environment

Light 4-6
Soil humidity 3-5
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Hardiness (USDA) 9-11

Usage

Uses medicinal
Edible -
Therapeutic use Appetite stimulants (unspecified), Fatigue (unspecified)
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Animal toxicity -

Cultivation

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Images

Dendrobium polyanthum unspecified picture

Distribution

Dendrobium polyanthum world distribution map, present in Andorra, China, Lao People's Democratic Republic, Myanmar, Nepal, Thailand, and Viet Nam

Identifiers

LSID urn:lsid:ipni.org:names:628303-1
WFO ID wfo-0000940221
COL ID 34NH7
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Callista cretacea Callista primulina Dendrobium cretaceum Dendrobium polyanthum Dendrobium primulinum Dendrobium nobile var. pallidiflorum