FOC_25_Epidendroidea..

372
EPIDENDROIDEAE
10a. Lip margin entire, only minutely hairy; sepals ca. 3.5 cm; lip blade broadly ovate, purplish red at
edge, disk with 1 deep purple spot below middle surrounded by a white circle ..................................... 27. D. lituiflorum
10b. Lip margin fimbriate-hairy; sepals ca. 2.7 cm; lip blade rhombic-orbicular, disk with deep purple
spots on either side which coalesce ............................................................................................................... 20. D. parishii
9b. 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 purplish
red; sepals 1.7–2 cm; petals entire; lip golden yellow, with margin pale purplish red ............................ 21. D. loddigesii
11b. 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 reniform-
orbicular, white tinged with purplish red at apex, lip disk with a yellow spot on either side ........... 22. D. devonianum
12b. 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; sepals
and petals white, usually with a pale purple blotch toward tip; lip orange-yellow tinged
with purplish red at apex ................................................................................................................. 25. D. crystallinum
13b. Floral bracts 2–8 mm, membranous; anther cap glabrous or finely papillate; sepals and petals
white, apex pale purplish red; sepals 2.3–3 cm; lip suborbicular, with purplish red stripes
at 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. cucullatum
14b. 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. polyanthum
15b. 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 pale
yellow villous on disk, margin fimbriate ................................................................................ 38. D. xichouense
16b. Mentum 5–8 mm, rounded to conic; sepals and petals spreading to recurved; lip with
disk glabrous or with purplish hairs, margin entire.
17a. Bracts without reddish brown mottling; stems 1.5–11 cm; sepals and petals uniformly
pale pink or yellowish white with pale pink apex.
18a. Stems 6–11 cm, cylindric, distinctly flexuous; sepals and petals yellowish white with
pale pink apex, lip with purple at base and along margin and apex ................................... 35. D. flexicaule
18b. Stems 1.5–3 cm, fusiform-obovoid; sepals and petals uniformly pale lilac-pink, lip
with 2 yellowish patches on either side .......................................................................... 36. D. wangliangii
17b. 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 uniformly
white, yellowish green, or brown.
19a. Sepals and petals recurved, revolute, brown ........................................................... 32. D. fanjingshanense
19b. 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. okinawense
20b. 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, or
ovate-oblong.
21a. Flowers white, lip white with a green spot in gullet, or tinged pale rose, usually
with a distal purple crescent ..................................................................................... 30. D. moniliforme
21b. 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 tinted
pink; anther cap cream, sometimes with purple tip ................................................ 33. D. catenatum
22b. Inflorescence 1–3-flowered; flowers whitish to yellowish, often tinted pink;
anther cap wholly bright purple ............................................................................... 34. D. scoriarum
Grastidium Blume, Bijdr. 333. 1825.
1. Dendrobium sect. Grastidium (Blume) Blume, Tab. Pl. Jav. Orchid. ad t. 4. 1825.
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