FOC_25_Epidendroidea..

Calanthe gougahensis Guillaumin, Bull. Mus. Natl. Hist.
Nat., sér. 2, 26: 537. 1954; Acanthephippium odoratum Averyanov;
A. thailandicum Seidenfaden.
Plants to 50 cm tall. Roots short. Pseudobulb ovoid-cylindric,
5–7 × ca. 1 cm, 4-noded, with several large membranous
sheaths, 2–4-leaved. Leaves broadly obovate-elliptic, 22–24 ×
ca. 7 cm, 3-veined, apex acuminate or acute; petiole-like base
2–10 cm, sheathing. Inflorescence 10–15 cm, fleshy, with several
scalelike sheaths at base; rachis densely 2–5-flowered;
floral bracts oblong-lanceolate, 2.5–3 cm, apex acuminate.
Flowers creamy white with faint red striations on outer surface,
campanulate-tubular, ca. 30 mm; pedicel and ovary 13–15 mm.
Sepals connate at base and connivent above, forming an urceolate
tube with apices free; dorsal sepal broadly elliptic-oblong,
18–20 × 8–9 mm, 3–5-veined, apex obtuse; lateral sepals ovate,
oblique, 18–20 × 12–13 mm, 5-veined, base adnate to column
foot, apex subobtuse. Petals narrowly ovate-oblong, ca. 20 × 7
EPIDENDROIDEAE
311
mm, fleshy, 5-veined, apex subacuminate; lip adnate to apex of
column foot, creamy white, ca. 10 mm, fleshy, 3-lobed; lateral
lobes erect, creamy white with brownish purple markings,
hatchet-shaped, 5–8 mm, margins slightly incurved; mid-lobe
yellow, rhombic-triangular, 5–8 × 4–7 mm, apex acute, recurved;
disk papillose, fleshy between 2 lateral lobes, with 3
low, rounded ridges; mentum formed by bases of lateral sepals
and column foot, saccate, apex obtuse-rounded. Column white,
ca. 13 mm; column foot 18–20 mm, inflexed at its mid-point
through an angle of 60°, adnate to base of lateral sepals for ca.
1/2 of its length, slightly recurved toward apex; anther ca. 4
mm; larger pollinia ca. 1.5 mm, smaller pollinia ca. 0.8 mm;
rostellum truncate with an apiculate tip; stigma broadly obovoid.
Fl. Apr–May.
Forests; ca. 300 m. Guangdong [Thailand, S Vietnam].
The name Acanthephippium sinense (a synonym of A. striatum)
has been misapplied to material of this species by some authors.
103. ANTHOGONIUM Wallich ex Lindley, Gen. Sp. Orchid. Pl. 425. 1840.
筒瓣兰属 tong ban lan shu
Chen Xinqi (陈心启 Chen Sing-chi); Jeffrey J. Wood
Herbs, terrestrial or occasionally lithophytic. Stems mostly buried in soil, globose corms or elongate, small canes, of many
nodes, decaying within several months after new corms produced. Leaves 2 or 3, rarely to 5, deciduous, linear-lanceolate, plicate,
sheathing. Inflorescences several, emerging above leaves; rachis whitish or tan to pale green, branched or unbranched, with several
tightly appressed brownish bracts; floral bracts loosely appressed, pinkish fading to brown. Flowers numerous, not resupinate, basally
gibbous, perianth reflexed downward, pink to nearly white; ovary suberect. Sepals spreading, oblanceolate, basally connate
forming a tube, apically free. Petals spreading or strongly reflexed, elongate, spatulate, obtuse, connate basally, free apically; lip basally
adnate to column, apically expanded and 3-lobed, with longitudinal red to purple lines and spots. Column whitish to pink, apex
dilated and abruptly incurved, lacking wings and a foot; anther cap pale yellow, 2-locular; pollinia 4, soft, without caudicle and viscidium.
Capsule fusiform.
One species: Bangladesh, Bhutan, Cambodia, China, N India, Laos, Myanmar, Nepal, Sri Lanka, Thailand, Vietnam.
1. Anthogonium gracile Lindley, Gen. Sp. Orchid. Pl. 426.
1840.
筒瓣兰 tong ban lan
Anthogonium corydaloides Schlechter; A. griffithii H. G.
Reichenbach.
Plants to 55 cm tall. Pseudobulbs usually partly buried in
soil, 1–2 cm in diam., with 2 or 3 nodes, with 2–5 leaves.
Leaf blade narrowly elliptic or narrowly lanceolate, 7–45 × 1–
2(–3.5) cm, papery, base petiolate, apex acuminate; petioles and
sheaths forming a slender pseudostem 3–22 cm. Inflorescence
erect; peduncle slender, glabrous, with several tubular sheaths;
rachis 4–10(–25) cm, laxly 4–8-flowered; floral bracts ovate-
Collabiopsis S. S. Ying.
104. COLLABIUM Blume, Bijdr. 357. 1825.
吻兰属 wen lan shu
Chen Xinqi (陈心启 Chen Sing-chi); Jeffrey J. Wood
lanceolate, small, ca. 4 mm, apex acute. Flowers often slightly
nodding, lip rose-pink or white and tinged with red; pedicel
and ovary 1.5–2 cm. Sepals connate in basal half forming a
tube 7–8 mm, with apical half free; dorsal sepal oblong-lanceolate,
ca. 16 × 2 mm, apex obtuse; lateral sepals falcate-spatulate,
ca. 16 × 4.5 mm, apex acute. Petals narrowly oblong-spatulate,
ca. 16 × 2 mm, apex obtuse; lip ca. 1.6 cm, cuneateclawed
at base, apical part 3-lobed; lateral lobes ovate-triangular,
apex obtuse; mid-lobe subovate, nearly as large as lateral
lobes, apex obtuse. Column ca. 1.6 cm. Fl. Jul–Nov. 2n = 38,
40, 42, 54.
Grassy slopes or thickets; 1200–2300 m. W Guangxi, SW
Guizhou, SE Xizang, W to SE Yunnan [Bangladesh, Bhutan, Cambodia,
N India, Laos, Myanmar, Nepal, Sri Lanka, Thailand, Vietnam].
Herbs, terrestrial, rarely epiphytic, glabrous except for minute hairs on bracts. Rhizome creeping, scales tubular, soon caducous,
rarely persistent; roots filiform, not branching, villous. Pseudobulbs alternating, 1–6 with a leaf and 1 with an inflorescence, articulate
at junction with petiole or scape, scales 1 per pseudobulb, tubular, generally soon caducous. Leaf 1 per pseudobulb, convolute,