FOC_25_Epidendroidea..

EPIDENDROIDEAE
2a. Inflorescences subumbellate, almost sessile, 2–6-flowered; lip disk with 2 purplish red spots ...................... 14. D. chrysanthum
2b. Inflorescences racemose or 1-flowered.
3a. Stems often with thickened middle and distal internodes, sometimes fusiform or slightly clavate; lip
rounded.
4a. Lip with 1 transversely lunate deep purple spot, margin compoundly fimbriate ......................................... 47. D. fimbriatum
4b. Lip with 2 chestnut spots, margin slightly erose ................................................................................................ 48. D. gibsonii
3b. Stems cylindric, of even width, never swollen.
5a. Inflorescences on leafy stems; lip golden yellow; peduncle perpendicular to stem; petals golden
yellow, entire.
6a. Inflorescence 2–7-flowered; lip ± reniform-rounded, with 2 purple spots ............................................ 37. D. hookerianum
6b. Inflorescence 1- or 2-flowered; lip rounded, without purple spots.
7a. Flowers solitary in leaf axil, waxy when dry; lip ovate-rhombic, without any stripes ........................... 41. D. lohohense
7b. Inflorescences 1- or 2-flowered, very rarely solitary, racemose or subumbellate; flowers not
waxy when dry ................................................................................................................................................ 51. D. henryi
5b. Inflorescences on leafless stems.
8a. Floral bracts cymbiform, 15–30 mm; peduncle sheaths 5–20 mm.
9a. Stem clavate; inflorescences stiffly arching, to 7-flowered; lip with a central maroon spot ................. 45. D. denneanum
9b. Stem linear; inflorescences erect, 1 or 2(or 3)-flowered; lip uniformly yellow with purplish lines
toward base.
10a. Inflorescence ca. 1 cm; floral bracts membranous, white, 12–13 mm ............................................... 44. D. chryseum
10b. Inflorescence ca. 6 cm; floral bracts thickly papery, pale purplish, 15–20 mm ............................. 46. D. jiajiangense
8b. Floral bracts ovate, 2–5 mm; peduncle 3–10 mm.
11a. Flowers creamy yellow or pale yellow; lip ovate-lanceolate, margin entire .................................. 13. D. heterocarpum
11b. Flowers golden yellow; lip relatively wider, margin erose, undulate, or long fimbriate.
12a. Lip subreniform, with purplish red stripes near base, margin erose or undulate.
13a. Stem ± compressed fusiform, 8–15 × ca. 1.5 cm; lip margin undulate; inflorescences
always 1 per node ............................................................................................................................. 49. D. capillipes
13b. Stem cylindric, 50–100 × 0.3–0.6 cm; lip margin erose; inflorescences often 2 per node ........... 50. D. dixanthum
12b. Lip suborbicular or ovate-triangular, uniformly golden yellow, margin with branched fimbriae.
14a. Petal margin densely long ciliate; lip suborbicular, margin with short branched fimbriae .......... 6. D. harveyanum
14b. Petal margin entire; lip ovate-triangular, strongly plumose with long branched fimbriae
especially along apical margin .................................................................................................... 5. D. brymerianum
Key 3
1a. Stem nodes and internodes swollen, at least on branches, sometimes moniliform.
2a. Stems slender, multi-branched, nodes and internodes swollen and moniliform; leaves less than 5 mm wide,
distal on branches ..................................................................................................................................................... 15. D. falconeri
2b. Stems often stout, unbranched; leaves more than 5 mm wide.
3a. Peduncle with sheaths 2–3 cm; flowers white, stained purplish red at apex; lip retuse, disk yellow with
2 dark purple spots ............................................................................................................................................ 16. D. wardianum
3b. Peduncle at base with sheaths 3–6 cm; flowers not as above.
4a. Floral bracts ovate, 5–6 mm; inflorescences subterminal from a leafy stem; flowers white with roseate
tips; lip disk golden yellow below middle, with several purplish red stripes at base on either side;
individual internodes swollen and obconic ................................................................................................. 19. D. findlayanum
4b. Floral bracts broadly ovate, 7–10 mm; inflorescences on leafless stems; flowers white with pale
purple or purplish red tips.
5a. Stem nodes ± swollen, but not moniliform; lip disk at center with a pale yellow lunate spot, both
sides of base with several purplish red stripes ..................................................................................... 17. D. gratiosissimum
5b. Nodes and internodes swollen, moniliform; lip disk below middle with golden yellow spot, base
without purplish red stripes .......................................................................................................................... 18. D. pendulum
1b. Stem nodes and internodes not swollen.
6a. Stem often narrow in lower part, wider distally; leaf apex unequally bilobed.
7a. Lip broadly ovate, much larger than petals .............................................................................................................. 28. D. nobile
7b. Lip broadly oblong, ca. as large as petals or smaller ...................................................................................... 29. D. linawianum
6b. Stem usually evenly cylindric, becoming narrower distally.
8a. Sheaths on internodes with green and white stripes; flowers pale purplish red; lip suborbicular, pale
purplish red above middle, golden yellow below middle ................................................................................ 26. D. crepidatum
8b. Sheaths on internodes without green and white stripes.
9a. Sepals and petals uniformly purple or purplish red.
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