CXXXVI. ORCHIDE^E. 
53 
Dendrobium.] 
on leafless stems 3- to 6-flowered, 3 to 3*5 in. wide. Sepals and 
petals oblong, undulate and twisted, rose lilac; mentum conic. 
Lip sub-saccate, limb orbicular erose pubescent and ciliate, light 
yellow. Hab. Rare. Penang. A large clump at Balik Pulau 
(Haniff). Distrib. Burma, S. Siam. 
Often cultivated, possibly a garden escape. 
10 . BULBOPHYLLUM, Thouars. 
Epiphytes with creeping rhizome and one jointed pseudobulb. 
Leaf one, sub-terminal on the pseudobulb coriaceous, oblanceolate, 
ovate or lineate. Flowers one to many in a raceme, peduncled from 
the rhizome close to the pseudobulb. Sepals lanceolate, similar, 
or laterals larger. Petals smaller. Lip fleshy curved or flat, 
tongue-shaped movable on the end of the column foot. Column 
short, thick, with a long curved foot to which the lateral sepals 
are usually adnate, arms short or long erect, entire or bifid. Anther 
conic or flat. Pollinia 2 to 4 ovoid or elliptic in unequal pairs. 
Species about 400, all tropics. 
§ 1. Sestochilus. Flowers large, solitary (rarely 2 or more) on a long 
peduncle, spreading. Sepals sub-equal; petals nearly as large. 
Lip flat narrow linear-oblong .... 
Lip flat long narrow acuminate; flowers 2*5 in. 
long. 
Lip flat hastate blunt; flowers rather small, 
yellow ...... 
Lip ovate acute curved. 
Flower large pink spotted, lip small 
Lip large; pseudo bulbs cylindric distant 
peduncle tall; flowers often 2. 
Sepals caudate, yellow .... 
Sepals lanceolate acuminate, yellow, thickly 
red-spotted ..... 
Sepals acute, yellow red-spotted or pink 
Sepals long caudate, striped pink 
Sepals ovate-oblong blunt, green spotted pink 
Pseudobulbs ovoid crowded; flowers large 
yellow ...... 
Flowers 1 in. or less across. 
Pseudobulb crowded cylindric; flowers -5 in. 
wide, yellow ..... 
Pseudobulbs oblong conic crowded; flowers 
1 in. wide, yellow striped red . 
Pseudobulbs conic; flowers 1 in. wide, lip 
very small ..... 
Flowers rather large, 4 to 8 in a head. 
Pseudobulbs crowded; flowers 2 in. wide, 
2 to 3 in a head glabrous 
Pseudobulbs distant; flowers 8 in a head, 
I in. wide, hairy purple . 
(t) B. patens 
(2} B. megalanthum 
(3) B. pileatum 
(4) B. macranthum 
(5) B. galbinum 
(6) B. polystietum 
(7) B. variabile 
(8) B. longiflorum 
(9) B. membranifolium 
(10) B. siamense 
(n) B. rugosum 
(12) B. pustulatum 
(13) B. microglossum 
(14) B. subumbellatum 
(15) B. hispidum 
§ 2. Monanthella. Small, often very small plants with a single small flower. 
Pseudobulbs adnate to rhizome approximate. 
Flowers orange. 
Sepals sub-equal linear acuminate 
. (16) B. araniferum 
