ORCHIDACEAE - China

372EPIDENDROIDEAE10a. Lip margin entire, only minutely hairy; sepals ca. 3.5 cm; lip blade broadly ovate, purplish red atedge, disk with 1 deep purple spot below middle surrounded by a white circle ..................................... 27. D. lituiflorum10b. Lip margin fimbriate-hairy; sepals ca. 2.7 cm; lip blade rhombic-orbicular, disk with deep purplespots on either side which coalesce ............................................................................................................... 20. D. parishii9b. Sepals and petals white, yellowish green, or pale yellow, sometimes tinged with purplish red at apex only.11a. Stems clambering, limp, and pendulous, branching distally; flowers solitary, borne on a leafy stem(but leaves often variably deciduous); sepals and petals white or white tinged with pale purplishred; sepals 1.7–2 cm; petals entire; lip golden yellow, with margin pale purplish red ............................ 21. D. loddigesii11b. Stems not as above; inflorescence 1–3(–6)-flowered, on leafless stems.12a. Lip fimbriate, compoundly ciliate; sepals and petals white with purplish red tip; lip reniformorbicular,white tinged with purplish red at apex, lip disk with a yellow spot on either side ........... 22. D. devonianum12b. Lip not fimbriate, compoundly ciliate; otherwise without above combination of characters.13a. Floral bracts 10–12 mm, papery; anther cap with dense long crystal-like papillae; sepalsand petals white, usually with a pale purple blotch toward tip; lip orange-yellow tingedwith purplish red at apex ................................................................................................................. 25. D. crystallinum13b. Floral bracts 2–8 mm, membranous; anther cap glabrous or finely papillate; sepals and petalswhite, apex pale purplish red; sepals 2.3–3 cm; lip suborbicular, with purplish red stripesat base on either side, apex pale purplish red, disk yellow.14a. Petals conspicuously wider than sepals; flowers pink; stem often slender; peduncle short,arising from nodes ......................................................................................................................... 23. D. cucullatum14b. Sepals and petals nearly equal in width or petals wider; flowers white, pink, yellowish,greenish, or brown; stem robust or slender.15a. Sepals and petals nearly equal in width; flowers pink; stem robust; peduncle inconspicuous,arising from a cymbiform channel on nodes ............................................................................ 24. D. polyanthum15b. Petals usually wider than sepals; flowers white, pale pink, yellowish, greenish, or brown;stem slender.16a. Mentum ca. 1 cm, tubular; sepals and petals not spreading; lip densely curled paleyellow villous on disk, margin fimbriate ................................................................................ 38. D. xichouense16b. Mentum 5–8 mm, rounded to conic; sepals and petals spreading to recurved; lip withdisk glabrous or with purplish hairs, margin entire.17a. Bracts without reddish brown mottling; stems 1.5–11 cm; sepals and petals uniformlypale pink or yellowish white with pale pink apex.18a. Stems 6–11 cm, cylindric, distinctly flexuous; sepals and petals yellowish white withpale pink apex, lip with purple at base and along margin and apex ................................... 35. D. flexicaule18b. Stems 1.5–3 cm, fusiform-obovoid; sepals and petals uniformly pale lilac-pink, lipwith 2 yellowish patches on either side .......................................................................... 36. D. wangliangii17b. Bracts with transverse reddish brown mottling at base or near middle; stems to 60 cm(rarely less than 10 cm in dwarf plants of D. moniliforme); sepals and petals uniformlywhite, yellowish green, or brown.19a. Sepals and petals recurved, revolute, brown ........................................................... 32. D. fanjingshanense19b. Sepals and petals spreading, ± flat, white or pale greenish cream.20a. Dorsal sepal 3–4 cm, lanceolate; lip 2.3–2.5 cm, pale yellow, rarely white;stems 40–70 cm; petals lanceolate .............................................................................. 31. D. okinawense20b. Dorsal sepal much shorter, 1.5–2.5 cm, ovate-oblong or lanceolate; lip 1.2–2 cm,varying in color; stems 10–40 cm; petals lanceolate, subelliptic, oblong, orovate-oblong.21a. Flowers white, lip white with a green spot in gullet, or tinged pale rose, usuallywith a distal purple crescent ..................................................................................... 30. D. moniliforme21b. Flowers whitish to yellowish or yellowish to greenish, sometimes tinted pink,lip not as above, without a green spot in gullet.22a. Inflorescence (1–)3–8-flowered; flowers yellowish to greenish, never tintedpink; anther cap cream, sometimes with purple tip ................................................ 33. D. catenatum22b. Inflorescence 1–3-flowered; flowers whitish to yellowish, often tinted pink;anther cap wholly bright purple ............................................................................... 34. D. scoriarumGrastidium Blume, Bijdr. 333. 1825.1. Dendrobium sect. Grastidium (Blume) Blume, Tab. Pl. Jav. Orchid. ad t. 4. 1825.禾 叶 组 he ye zu