Dendrobium.] 
CXXXVI. ORCHIDE^E. 
33 
§ 4. Virgates. Often terrestrial, 
from upper parts of sheaths. 
Terrestrial. 
Sheaths glabrous when adult 
Sheaths black pubescent 
Epiphytic, sheaths glabrous; 
linear 
§ 5. Bambuscefolics. Epiphytes 
Leaves linear to ovate-lanceolate. 
Stems slender erect. Flowers in pairs 
. (19) D. calcaratum 
. (20) D. villosulum 
leaves narrow 
. (21) D. pachyglossum 
with tall erect or pendulous stems. 
_ Flowers from an internode with one or 
more pairs of ovate yellow stiff bracts, yellow not expanding. 
Stems erect; leaves thin linear-lanceolate. . (22) D. gemellum 
Stems pendulous; leaves ovate-lanceolate fleshy (23) D. pensile 
§ 6. Clavata;. Stems with 1 to 3 of the internodes at base swollen into 
an ovoid or fusiform pseudobulb. Leaves lanceolate, linear or terete, b lowers 
borne singly from tufts of bracts on terminal nude part of stem, medium to 
small, white or pink. Mentum curved. 
Leaves terete. 
Stem leafy to top, long; flowers lateral; leaves 
setaceous ...... 
Stem nude at top; leaves very narrow . 
Leaves flat narrow linear .... 
Leaves elliptic broad. 
Pseudobulb oval flattened of 2 internodes red 
Pseudobulb fusiform thick of 4 internodes, 
yellow; flowers white, yellow on lip 
§ 7. Distichophyllez. Stems tufted leafy. Leaves ovate to lanceolate 
bifid. Flowers medium size on axillary racemes. Petals and sepals reflexed. 
Mentum straight horizontal. 
Stems tufted; lip broad entire fleshy; flowers small 
Leaves ’5 in. long or more; flowers *5 in. across 
Leaves up to -5 in. long; flowers -25 in. wide 
Leaves lanceolate; lip 3-lobed reniform 
Leaves broad lanceolate; lip 3-lobed oblong 
retuse . . . . . • 
Leaves thick short, lip 3-lobed oblong, side- 
lobes broad ..... 
Lip narrow long-clawed side-lobes small; leaves 
rather long; flowers burnt sienna 
Stems on a creeping rhizome ; leaves thin narrow; 
sepals white, lip orange 
§8. Breviflares. Stems not swollen. Leaves 1 or 2 sub-terminal. Flowers 
in short racemes or solitary from below leaves. Lip short with small obscure 
lobes. Mentum short. 
Stem club-shaped 4-angled above; flower solitary 
Stem sub-terete stout; flowers white and yellow 
in a compact head-like raceme 
Stem slender; flowers few white and violet 
Stem slender; lip narrow 3-lobed, pale yellow 
Stem slender; lip entire; flowers green cleisto- 
gamous ...... 
Stem slender; lip boat-shaped; flowers white 
and pink ...... 
§9. Pedilonum. Stems terete (rarely flattened). Leaves lanceolate. 
Flowers solitary or racemed on leafless stems large or small white, pink or 
orange. Mentum much longer than sepals. Lip with a long linear claw and 
ovate or oblong limb. 
Stem flattened thin ovoid 
Stems terete long. 
Fl.M.P., 4 
(24) D. gracile 
(25) D. clavator 
(26) D. truncatum 
(27) D. planibulbe 
(28) D. crumenatum 
(29) D. bifarium 
(30) D. rupicolum 
(31) D. Hosei 
(32) D. revolutum 
(33) D. uniflorum 
(34) D. metachilinum 
(35) D. pandaneti 
(36) D. euphlebium 
(37) D. callibotrys 
(38) D. metrium 
(39) D. flavidulum 
(40) D. tetrodon 
(41) D. hercoglossum 
(42) D. lamellatum 
D 
