Polystachya malilaensis Schltr.

Species

Angiosperms > Asparagales > Orchidaceae > Polystachya

Characteristics

A small epiphytic plant to 15 cm. high.. Pseudobulbs erect or suberect, narrowly cylindric-conical, to 2.5 cm. long, 7–8 mm. in diameter, 2–3-leaved at the apex.. Leaves erect-spreading, oblong-ligulate to oblanceolate or linear, obtuse to subacute, 4–12 cm. long, 5–17 mm. wide, glabrous.. Inflorescence erect; peduncle minutely puberulous, 3.5–5.5 cm. long; bracts ovate, acuminate, minutely puberulous, as long as ovary, 7–14 mm. long.. Flowers whitish with a yellow-brown hood, lime-green to yellowish brown; lip white, side lobes lined crimson.. Dorsal sepal lanceolate-oblong, acuminate, 8–11.2 mm. long, 2–3 mm. wide; lateral sepals obliquely lanceolate, somewhat falcate, keeled on reverse, 9–13.5 mm. long, 5.5–7 mm. wide, acuminate; mentum shortly conical, 4.6 mm. high.. Petals linear-oblanceolate, subacute, 6.5–7.5 mm. long, 0.5–1.5 mm. wide.. Lip genuflex-recurved towards the middle, with a long claw, 3-lobed, 9 mm. long, 5 mm. wide, glabrous; side lobes erect, oblong, 2 mm. wide, 3.5 mm. long; mid-lobe oblong-lanceolate, fleshy, bullate, very recurved, acuminate, to 5.5 mm. long, 2 mm. wide; callus fleshy, ± papillose but not pubescent, lying between the side lobes.. Column terete, 1 mm. long; column foot 4.5 mm. long, glabrous.
More
Lip strongly recurved, hard to flatten, 9–11 × 5 mm, 3-lobed with a long claw; mid-lobe 5.5–6 × 2–4 mm, oblong-lanceolate, acuminate, fleshy, bullate; side lobes erect, with a fleshy somewhat papillose callus lying between them.
Sepals sparsely pubescent; dorsal sepal 9–12 × 2–4 mm, lanceolate, acuminate; lateral sepals 9–13.5 × 5.5–7 mm, obliquely lanceolate, somewhat falcate, long acuminate, keeled on the outside; mentum conical, 4.5–5 mm high.
Sepals and petals yellowish or yellow-brown, tinged with purple, becoming deep orange-brown as the flowers age; lip white with purple spotting on the side lobes and centre of mid-lobe.
Leaves 4–12 × 1–1.5 cm, lanceolate, oblong-lanceolate or oblanceolate, often purple-tinged or with a purple line around the edge.
Inflorescence (floral axis) to 15 cm long, fairly densely up to c. 20-flowered.
Pseudobulbs 10–20 × 7–8 mm, ovate to conical, green or reddish, 2–3-leaved.
Peduncle, pedicel, ovary and bracts all minutely pubescent.
Petals 6.5–7.5 × 0.5–2 mm, narrowly oblanceolate.
Small epiphytic, occasionally lithophytic, herb.
Bracts 7–14 mm long, ovate, acuminate.
Pedicel and ovary c. 7 mm long.
Column 1 mm long.
Life form perennial
Growth form herb
Growth support epiphyte
Foliage retention -
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.08 - 0.08
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color
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Fruiting months -
Nitrogen fixer -
Photosynthetic pathway -

Environment

Light -
Soil humidity -
Soil texture -
Soil acidity -
Soil nutriment -
Hardiness (USDA) 9-12

Usage

Uses -
Edible -
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

Mode -
Germination duration (days) -
Germination temperacture (C°) -
Germination luminosity -
Germination treatment -
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Optimum temperature (C°) -
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Vigor -
Productivity -

Distribution

Polystachya malilaensis world distribution map, present in Angola, Tanzania, United Republic of, Zambia, and Zimbabwe

Identifiers

LSID urn:lsid:ipni.org:names:654419-1
WFO ID wfo-0000280491
COL ID 786SF
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Polystachya malilaensis Polystachya zambesiaca var. malilaensis