Aerangis verdickii Schltr.

Species

Angiosperms > Asparagales > Orchidaceae > Aerangis

Characteristics

Stem woody, up to 2 cm. in diameter, to 5 cm. long but usually very short, with numerous greyish roots 5–9 mm. in diameter and very elongated.. Leaves 2–6, distichous, oblong-ligulate, 5–20 cm. long, 2–5 cm. wide, slighdy narrowed towards the base, margins undulate, the apex bilobed, the lobes rounded or acute, equal or subequal, 2–11 (–20) mm. long, thick and coriaceous or almost succulent in texture, greyish green, often with a narrow band of red at the margin, often split along the midvein in herbarium specimens.. Inflorescences arising below the leaves bearing 4–12 flowers, up to 40 cm. long, usually ± 20 cm.; peduncle terete, up to 6 cm. long, 5 mm. in diameter, bearing several tubular sheaths; rhachis similar, almost straight; bracts broadly ovate, apiculate, up to 10 mm. long.. Flowers arranged in 1–2 rows, 1.5–3.5 cm. apart; perianth-parts reflexed or spreading, white, rarely faintly tinted with pink in the ovary and spur; pedicel with ovary slender and curved, 2–3.8 cm. long.. Dorsal sepal slightly concave, arching forwards over the column, ovate-oblong, apiculate, 11–15 mm. long, 4–8 mm. wide; lateral sepals spreading or deflexed, often falcate, narrowly oblong-ligulate with a slightly thickened apicule, 14–21 mm. long, 3–5 mm. wide.. Petals reflexed, obovate-oblong, apiculate, 12–18 mm. long, 3.5–8 mm. wide.. Lip oblong-obovate, 11–18 mm. long, 5–9 mm. wide, bearing 2 distinct ridges at its base in front of the spur opening and sometimes with additional ridges on either side of these, often deflexed towards the spur, apiculate.. Spur slender, curved, often slightly bent, thickened and flattened in the apical half, 12–16(–20) cm. long.. Column terete, enlarged towards the apex, 3–5 mm. long; rostellum deflexed, porrect at the tip, wider than the stipes; anther-cap with an obtuse beak; pollinia reniform, 1 mm. long; stipes slender, widened in the upper third; viscidium ± ovate.
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Plants epiphytic or rarely epilithic; stems to 40 x 10 mm; leaves ligulate-oblong, thick-tissued, somewhat narrowed to the base, unequally bilobed, lobes rounded to acute, margins undulate, 50-200 x 20-50 mm. Inflorescences of several c. 200 mm long, 4-12-flowered racemes; peduncle with several tubular sheaths; bracts broadly ovate, apiculate, to 8 mm long. Flowers white, to 30 mm in diameter; pedicel plus ovary to 30 mm long. Sepals unequal; median erect, arching over the gynostemium, narrowly elliptic, apiculate, 11-20 x 4-8 mm; laterals deflexed, twisted to face backwards, linear-elliptic, acute, 16-21 x 3-5 mm. Petals reflexed, narrowly oblanceolate, acute, 14-20 x 6-8 mm. Lip deflexed, narrowly oblong, apically conduplicate, basally the margins decurved, 16-18 x 6-9 mm; spur pendent, thickened in the apical half, 120-160 mm long, entrance with 2-4 longitudinal ridges. Gynostemium erect, 6 mm tall.
Leaves 2–6, distichous, sometimes deciduous in the dry season, 5–20 × 2–5 cm, oblong-ligulate, undulate on the margins, subequally 2-lobed at the apex with acute or rounded lobes; lamina thick and fleshy, grey-green, often with a red-purple margin.
Lip 11–15(20) × 5–9(10) mm, oblong-obovate or pandurate, somewhat constricted in basal half, with 2 or more ridges at the base in the mouth of the spur; spur 12–20 cm long, flexuous, thickened in apical half.
Epiphyte. Stems up to 150 mm long. Leaves very thick, greyish green, sometimes with a reddish margin, but venation not distinct. Lip with 2 longitudinal ridges in mouth. Spur 120-160 mm long. Flowers white.
Dorsal sepal arching over the column, 11–19 × 4–8 mm, ovate, apiculate; lateral sepals spreading or deflexed, 14–18(22) × 3–8 mm, oblong-ligulate, often falcate, apiculate.
Epiphytic or lithophytic herb; stem woody, up to 5 cm long; roots numerous, 5–9 mm in diameter.
Flowers white, the spur tinged with green, rarely with pink, set 1.5–3.5 cm apart.
Inflorescences arising below the leaves, 20–60 cm long, 4–16-flowered.
Petals reflexed, 12–18(21) × 3.5–8 mm, obovate-oblong, apiculate.
Capsules c. 30 × 1.2 cm, ellipsoid.
Bracts up to 10 mm long, ovate.
Pedicel and ovary 2–4 cm long.
Column 3–5 mm long.
Life form perennial
Growth form herb
Growth support epiphyte
Foliage retention deciduous
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.01
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months -
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway -

Environment

Light -
Soil humidity 1-3
Soil texture 7-8
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 -
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Images

Aerangis verdickii unspecified picture

Distribution

Aerangis verdickii world distribution map, present in Angola, Mozambique, Rwanda, Tanzania, United Republic of, South Africa, Zambia, and Zimbabwe

Identifiers

LSID urn:lsid:ipni.org:names:615067-1
WFO ID wfo-0000843137
COL ID 64YWR
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Angraecum augustum Aerangis erythrura Aerangis schliebenii Aerangis verdickii Angraecum verdickii Aerangis erythurua

Lower taxons

Aerangis verdickii var. rusituensis Aerangis verdickii var. verdickii