ORCHIDACEAE - China

EPIDENDROIDEAE 455hirsute; stigma large, at base of column; anther cap subglobose,densely minutely papillate-hairy. Capsule narrowly ellipsoid,ca. 4 × 1 cm. Fl. May–Jul, fr. Sep–Oct. 2n = 38.Epiphytic on tree trunks at forest margins; 500–800 m. S Yunnan[Laos, Myanmar, Thailand].2. Staurochilus loratus (Rolfe ex Downie) Seidenfaden, OperaBot. 95: 95. 1988.小 掌 唇 兰 xiao zhang chun lanAscochilus loratus Rolfe ex Downie, Bull. Misc. Inform.Kew 1925: 407. 1925; Pteroceras loratum (Rolfe ex Downie)Seidenfaden & Smitinand.Stems ascending, 3–16 cm, 5–7 mm in diam., rigid, sometimesbranching, internodes 5–7 mm. Leaves many, distichous;leaf blade narrowly oblong, 10–16 × 0.9–1.8 cm, leathery, obtuseand slightly unequally bilobed. Inflorescences ascending,racemose, 1–5, 5–8 cm, laxly 3–6-flowered; peduncle slender,1–1.5 mm in diam.; floral bracts triangular, ca. 2 mm, acute.Flowers opening widely, small, slightly fleshy, sepals and petalsyellow with purplish brown spots, lip white; pedicel and ovaryca. 6 mm. Dorsal sepal subspatulate, ca. 5 × 2.5 mm, acute;lateral sepals obliquely obovate, ca. 5 × 3 mm, obtuse. Petalsobliquely obovate, ca. 4.5 × 2.5 mm, obtuse; lip ca. 6 mm,fleshy, 3-lobed, base with a channeled, densely hairy claw ca. 2mm; lateral lobes suboblong, ca. 2 × 1.5 mm; mid-lobe subquadrate,ca. 2 × 3 mm, fleshy, adaxially ± papillate, subtruncate;disk deeply concave at center; spur cylindric, ca. 2.5 × 1.5mm, apex obtuse, interior with a densely hairy ligulate appendageon back wall. Column ca. 2 mm, with dense minutelypapillate hairs; stipe spatulate, ca. 1.5 mm; viscidium elliptic,very thick. Capsule cylindric, 4–5 cm × ca. 5 mm. Fl. Jan–Mar,fr. Jun.Epiphytic on tree trunks in forests; 700–1500 m. S Yunnan [Thailand].3. Staurochilus luchuensis (Rolfe) Fukuyama, Trans. Nat.Hist. Soc. Formosa 32: 270. 1942.豹 纹 掌 唇 兰 bao wen zhang chun lanStauropsis luchuensis Rolfe, Bull. Misc. Inform. Kew1907: 131. 1907; Cleisostoma ionosmum Lindley f. lutschuenseMakino; Pomatocalpa luchuense (Rolfe) Tang & F. T. Wang;Trichoglottis ionosma (Lindley) J. J. Smith var. luchuensis(Rolfe) S. S. Ying; T. luchuensis (Rolfe) Garay & H. R. Sweet;Vandopsis luchuensis (Rolfe) Schlechter.Stems terete, to 1 m, stout, ca. 1.5 cm, internodes 2–3 cm.Leaves many, distichous; leaf blade linear-lorate, 20–25 × 2.5–3.5 cm, leathery, unequally laterally bilobed. Inflorescencesarising from upper stem, several, ascending, racemose or paniculate,to 40 cm, many flowered; floral bracts broadly triangular,ca. 4 mm. Flowers yellowish white with many brownish redspots, opening widely, fleshy; pedicel and ovary ca. 1.5 cm.Dorsal sepal spatulate, ca. 18 × 7 mm, obtuse; lateral sepalsslightly oblique, spatulate, shorter and wider than dorsal sepal.Petals falcate-obovate, ca. 17 × 7 mm, clawed at base; lip 3-lobed, including spur ca. 1.5 cm; lateral lobes erect, suborbicular,both surfaces shortly hairy; mid-lobe fleshy, abruptly narrowednear middle to a hairy cuspidate tip; spur subconic, ca. 5mm, interior with a ca. 4 mm appendage almost covering entrance;stelidia hairy; clinandrium and anther cap hairy. Fl.Mar–May. 2n = 38.Epiphytic on trees in broad-leaved forests. Taiwan [Japan (RyukyuIslands), Philippines].160. POMATOCALPA Breda, Gen. Sp. Orchid. Asclep. [fasc. 3: text p. 1, t. 1]. 1829.鹿 角 兰 属 lu jiao lan shuChen Xinqi ( 陈 心 启 Chen Sing-chi); Jeffrey J. WoodHerbs, epiphytic, monopodial, small to medium-sized. Stems pendulous or ascending, sometimes climbing, short or elongate,with a few to many nodes. Leaves several to many, distichous, narrowly oblong, flat, leathery, with sheathing base, usually unequallybilobed or retuse. Inflorescences lateral, paniculate or racemose, pendulous or ascending, many flowered; peduncle long. Flowersresupinate or not, usually opening widely, small. Sepals and petals free, similar, spreading. Lip firmly attached to column,immovable, fleshy, shortly spurred or saccate, 3-lobed; lateral lobes erect, deltoid, small; mid-lobe often recurved, usually suborbicularor ovate-triangular, fleshy; front wall fleshy, thickened, back wall with a projecting, erect, bifurcate, ligulate appendagereaching or exserted beyond entrance. Column short, stout, foot absent; anther cap shortly beaked; rostellum large, hamulate, ± bifid,shorter than diam. of column; pollinia 4, as 2 discrete unequal pollen masses, waxy, subglobose, with a long common stipe and asolitary small, usually concave viscidium.Thirteen species: from India through Malesia and N Australia to Fiji, north to NE Himalayas and Taiwan; two species in China.See the treatment by Watthana (Harvard Pap. Bot. 11: 207–256. 2007).1a. Floral bracts acuminate; lip mid-lobe narrower than spur; inflorescence usually longer than 4 cm ............................ 1. P. spicatum1b. Floral bracts acute; lip mid-lobe equal to or wider than spur; inflorescence shorter than 4 cm ................................ 2. P. undulatum1. Pomatocalpa spicatum Breda, Gen. Sp. Orchid. Asclep.[fasc. 3: text p. 1, t. 1]. 1829.鹿 角 兰 lu jiao lanCleisostoma uteriferum J. D. Hooker; C. wendlandorumH. G. Reichenbach; Pomatocalpa wendlandorum (H. G. Reichenbach)J. J. Smith; Saccolabium uteriferum (J. D. Hooker)Ridley; S. wendlandorum (H. G. Reichenbach) Kraenzlin.Stems erect, 2–3 cm, stout. Leaves 5 or 6; leaf blade darkgreen, broadly lorate or falcate-oblong, 20–31 × 2.5–3.5 cm,