ORCHIDACEAE - China

EPIDENDROIDEAE 339Pseudobulbs borne 1–3 cm apart on rhizome, narrowly ovoid toovoid-oblong, 1–2 cm × 5–8 mm, embraced by leathery sheathswhen 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. Inflorescencearising with young pseudobulb and young leaves frombase of last pseudobulb, 3–5 cm; rachis 10- or more flowered,straight; floral bracts caducous, ovate-oblong. Flowers white oryellowish, ca. 4 mm in diam.; pedicel and ovary 2–3 mm. Dorsalsepal ovate-oblong, ± cymbiform, 3–4 × ca. 2 mm, dorsallyslightly carinate, apex obtuse; lateral sepals ovate, oblique,slightly wider than dorsal sepal. Petals broadly ovate-rhombicor broadly ovate, 2.8–3.3 × 2.8–3.2 mm; lip broadly elliptic,cymbiform, ca. 3 × 4–5 mm, subtruncate or obtuse; disk withoutappendages. Column ca. 2 mm, thick, winged on both apicalsides; 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. NFujian, 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 taoPholidota kouytcheensis Gagnepain.Rhizomes creeping, 4–6 mm in diam., branched, denselycovered by leathery sheaths; roots 1.5–2 mm in diam. Pseudobulbsusually spaced 1–3 cm on rhizome, subcylindric, (1.5–)2–5 cm × 6–8 mm, somewhat attenuate toward apex, embraced byleathery sheaths when young, apex 2-leaved. Leaves shortlypetiolate, lanceolate, 6–15 × 0.7–1.8(–2.5) cm, papery, veinsplicate, subobtuse. Inflorescence arising with young leaves fromrhizome near base of last pseudobulb, 7–9(–12) cm; rachis 15–20-flowered, sometimes slightly flexuous toward base; floralbracts 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-ellipticor ovate-oblong, slightly concave, 3.2–3.8 × 2–2.5 mm, dorsallyslightly carinate; lateral sepals broadly ovate-lanceolate,slightly narrower than dorsal sepal, concave, dorsally conspicuouslycarinate. Petals similar to dorsal sepal, neither concavenor carinate; lip sigmoid, oblong-obovate in outline, ca. 4 × 3mm, apex subtruncate or obtuse and often inconspicuouslyemarginate, slightly contracted and concave near base, forminga cupular or subglobose sac, ecallose; epichile 2.8–4 mm,abruptly recurved. Column 2–2.5 mm, apex winged and with 2small teeth on both sides; rostellum broadly ligulate. Capsuleobovoid-ellipsoid, ca. 1 cm × 6 mm, 3-ridged; fruiting pedicel2–4 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 taoPholidota 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 aparton rhizome, bright yellowish when dried, ovoid to subcylindric,1–3 cm × 5–12 mm, base embraced by leathery sheaths, apex 2-leaved. Leaf blade linear-oblanceolate, nearly broadly linear, orlanceolate, 2–8 × 0.6–1 cm, thickly leathery, midvein concaveand 2 lateral veins obviously convex adaxially, all 3 veins raisedabaxially, margin slightly recurved, apex subacute to longacuminate; petiole 3–10 cm. Inflorescence arising with youngleaves from rhizome near base of last pseudobulb, 3–8 cm;rachis straight, 3–9-flowered; floral bracts gradually falling offduring flowering, ovate, 6–7 mm. Flowers white, tinged withgreen 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; lateralsepals cymbiform, slightly oblique, narrower than dorsalsepal. 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 mucronateor 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].Tetrapeltis Wallich ex Lindley.114. OTOCHILUS Lindley, Gen. Sp. Orchid. Pl. 35. 1830.耳 唇 兰 属 er chun lan shuChen Xinqi ( 陈 心 启 Chen Sing-chi); Jeffrey J. WoodHerbs, epiphytic. Rhizome erect or pendulous. Pseudobulbs superposed, i.e., each pseudobulb arising near apex of previouspseudobulb, 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. Flowersresupinate, 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 lobesof 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.