FOC_25_Epidendroidea..

Pseudobulbs borne 1–3 cm apart on rhizome, narrowly ovoid to
ovoid-oblong, 1–2 cm × 5–8 mm, embraced by leathery sheaths
when young, apex 2-leaved. Leaf blade linear or linear-lanceolate,
2–8 × 0.5–0.7 cm, papery, margin often ± recurved,
apex shortly acuminate or subacute; petiole 2–7 cm. Inflorescence
arising with young pseudobulb and young leaves from
base of last pseudobulb, 3–5 cm; rachis 10- or more flowered,
straight; floral bracts caducous, ovate-oblong. Flowers white or
yellowish, ca. 4 mm in diam.; pedicel and ovary 2–3 mm. Dorsal
sepal ovate-oblong, ± cymbiform, 3–4 × ca. 2 mm, dorsally
slightly carinate, apex obtuse; lateral sepals ovate, oblique,
slightly wider than dorsal sepal. Petals broadly ovate-rhombic
or broadly ovate, 2.8–3.3 × 2.8–3.2 mm; lip broadly elliptic,
cymbiform, ca. 3 × 4–5 mm, subtruncate or obtuse; disk without
appendages. Column ca. 2 mm, thick, winged on both apical
sides; rostellum small. Capsule obovoid, 6–8 × 4–5 mm;
fruiting pedicel 2–3 mm. Fl. Apr, fr. Aug–Sep.
● Lithophytic on rocks in forests or shaded places; 200–900 m. N
Fujian, Guangdong, Guangxi, Hunan, Jiangxi, Taiwan, Zhejiang.
11. Pholidota yunnanensis Rolfe, J. Linn. Soc., Bot. 36: 24.
1903.
云南石仙桃 yun nan shi xian tao
Pholidota kouytcheensis Gagnepain.
Rhizomes creeping, 4–6 mm in diam., branched, densely
covered by leathery sheaths; roots 1.5–2 mm in diam. Pseudobulbs
usually spaced 1–3 cm on rhizome, subcylindric, (1.5–)2–
5 cm × 6–8 mm, somewhat attenuate toward apex, embraced by
leathery sheaths when young, apex 2-leaved. Leaves shortly
petiolate, lanceolate, 6–15 × 0.7–1.8(–2.5) cm, papery, veins
plicate, subobtuse. Inflorescence arising with young leaves from
rhizome near base of last pseudobulb, 7–9(–12) cm; rachis 15–
20-flowered, sometimes slightly flexuous toward base; floral
bracts deciduous during flowering, ovate-rhombic, 6–8 × 4.5–
5.5 mm. Flowers white or pale flesh-colored, 3–4 mm in diam.;
pedicel and ovary 3.5–5 mm. Dorsal sepal broadly ovate-elliptic
or ovate-oblong, slightly concave, 3.2–3.8 × 2–2.5 mm, dorsally
slightly carinate; lateral sepals broadly ovate-lanceolate,
slightly narrower than dorsal sepal, concave, dorsally conspicuously
carinate. Petals similar to dorsal sepal, neither concave
nor carinate; lip sigmoid, oblong-obovate in outline, ca. 4 × 3
mm, apex subtruncate or obtuse and often inconspicuously
Tetrapeltis Wallich ex Lindley.
EPIDENDROIDEAE
339
emarginate, slightly contracted and concave near base, forming
a cupular or subglobose sac, ecallose; epichile 2.8–4 mm,
abruptly recurved. Column 2–2.5 mm, apex winged and with 2
small teeth on both sides; rostellum broadly ligulate. Capsule
obovoid-ellipsoid, ca. 1 cm × 6 mm, 3-ridged; fruiting pedicel
2–4 mm. Fl. May, fr. Sep–Oct.
Epiphytic on trees in forests or lithophytic on rocks along valleys;
1200–1700 m. Guangxi, Guizhou, W Hubei, W Hunan, NE to S Sichuan,
S Yunnan [N Vietnam].
12. Pholidota missionariorum Gagnepain, Bull. Mus. Natl.
Hist. Nat., sér. 2, 3: 146. 1931.
尖叶石仙桃 jian ye shi xian tao
Pholidota rupestris Handel-Mazzetti.
Rhizomes creeping, often branched, 2–3 mm in diam.,
densely covered with scaly sheaths, nodes sparsely rooting;
roots 0.5–1 mm in diam. Pseudobulbs usually 5–10 mm apart
on rhizome, bright yellowish when dried, ovoid to subcylindric,
1–3 cm × 5–12 mm, base embraced by leathery sheaths, apex 2leaved.
Leaf blade linear-oblanceolate, nearly broadly linear, or
lanceolate, 2–8 × 0.6–1 cm, thickly leathery, midvein concave
and 2 lateral veins obviously convex adaxially, all 3 veins raised
abaxially, margin slightly recurved, apex subacute to long
acuminate; petiole 3–10 cm. Inflorescence arising with young
leaves from rhizome near base of last pseudobulb, 3–8 cm;
rachis straight, 3–9-flowered; floral bracts gradually falling off
during flowering, ovate, 6–7 mm. Flowers white, tinged with
green or reddish, 5–7 mm in diam.; pedicel and ovary 2–5 mm.
Sepals ovate or broadly ovate, 3–5 × 2–2.5 mm, 1-veined; lateral
sepals cymbiform, slightly oblique, narrower than dorsal
sepal. Petals obovate-orbicular or elliptic, 2.5–3 × ca. 1.8 mm,
3-veined; lip nearly broadly oblong or obovate, ca. 4 × 3 mm,
base slightly concave, margin crisped, apex obtusely mucronate
or broadly emarginate; hypochile with 3 short keels at back;
epichile 1–2 mm. Column 1.2–1.5 mm, thick, apex winged,
slightly irregularly toothed; rostellum suberect, suborbicular.
Capsule obovoid-ellipsoid, ca. 1 cm × 5 mm, slightly 3-ribbed;
fruiting pedicel 1–2 mm. Fl. Jun, Oct–Nov, fr. Nov.
Epiphytic on trees in forests, lithophytic on shaded rocks; 1100–
2600 m. C and SW Guizhou, SE Xizang, NW and SE Yunnan [Bhutan,
Myanmar, N Vietnam].
114. OTOCHILUS Lindley, Gen. Sp. Orchid. Pl. 35. 1830.
耳唇兰属 er chun lan shu
Chen Xinqi (陈心启 Chen Sing-chi); Jeffrey J. Wood
Herbs, epiphytic. Rhizome erect or pendulous. Pseudobulbs superposed, i.e., each pseudobulb arising near apex of previous
pseudobulb, subcylindric, 2-leaved. Leaves petiolate, plicate, linear to elliptic, papery, acute. Inflorescence proteranthous or synanthous,
pendulous, racemose, many flowered; rachis straight or weakly zigzag; floral bracts caducous at or after anthesis. Flowers
resupinate, often white, with or without brown markings, or flesh-colored, small. Sepals free, narrowly lanceolate to linear-lanceolate.
Petals linear-lanceolate to linear; lip with a saccate, bilobed hypochile and a much longer, narrow epichile, ecallose; lateral lobes
of hypochile clasping base of column. Column incurved and dilated apically, without stelidia, foot absent; pollinia 4, with caudicles;
stigma cup-shaped; rostellum large. Capsule ellipsoid, rostrate.
Four species: Bhutan, China, NE India, Myanmar, Nepal, Thailand, and Indochina; four species in China.