47 > 2 Ames and Quisumbing: Philippine Orchids, II 207 
Genus BULBOPHYLLUM Thouars 
BULBOPHYLLUM CLEISTOGAMUM Kidl. Plates 3, 9, and 23. 
Bulbophyllum cleistogamum Ridl. in Journ. Linn. Soc. 31 (1896) 
277, FI. Malay Penin. 4 (1924) 69; Cabr in Gard. Bull. Straits 
Settlements 5 (1930) 139, t. 2, f. 5. 
“Rhizoma pseudobulbis pluribus approximatis tectum; pseu- 
dobulbi conici sulcati, 3/4 pollices longi, laete virentes. Folium 
oblongum petiolatum subacutum, canalicula distincta, carina 
dorsali paullo elevata, 4-6 pollices longum, 3/4-1 pollicem latum, 
petiolo prof unde canaliculate, 1/2 poll, longo. Scapi plures 
rigiduli teretes, ad 12 pollices longi, virides, bracteis siccis 
subacutis, 1/2-pollicaribus arete amplectentibus. Racemus bre- 
viusculus complanatus, bracteis ovatis acutis, mucronatis, 1/4- 
Pollicaribus amplectentibus. Flores mediocres cleistogami, sae- 
pissime clausi, raro paullo expansi. Sepala lanceolata acuminata 
acuta, pallide straminea, 3/4 poll, longa, lateralia basi dilatata 
intus rubescentia. Petala minuta quadrata subdenticulata, mu- 
crone subulato longiusculo, viridia. Labellum elongatum cur¬ 
ium acutum, basi lata, lobis duobus lateralibus parvis falcatis, 
carinis duabus approximatis a basi usque ad geniculatum, basi 
kermesinum, apice stramineum. Columna brevis crassa viri- 
dis, margine clinandrii denticulate. Stelidia subulata erecta, 
Pede kermesino haud producto. Anthera ovata. Rostellum 
nullum.” Ridley, 1. c. 
Rhizomes creeping, branched, 3 to 5 mm in diameter, clothed 
with dry tubular sheaths, which later become fibrous; internodes 
^ to 5 mm long. Pseudobulbs 1-leaved, cylindric-conic, usually 
curved, 2 to 3.5 cm long, 1 to 1.5 cm in diameter at the base, 
0-7 to 2.5 cm distant, wrinkled and longitudinally grooved. 
Leaves dark green, more or less erect, oblong, oblong-lanceolate 
w oblong-elliptic, acute, 14.5 to 17.5 cm long, 3.5 to 4.5 cm wide; 
Petioles grooved, 1 to 2 cm long. Inflorescences arising from 
the base of the pseudobulbs, more or less erect; the peduncles 
greatly elongated, terete, green suffused with dark purple, 50 
to 61 cm long, 1.5 to 2 mm in diameter, clothed at every node 
with a tubular sheath. Bracts triangular, acute, 7 to 9 mm 
long, strongly keeled on the back. Flowers odorless, appearing 
smgly at intervals of several weeks, widely expanded, 4 to 4.5 
cm across; pedicellate ovary 1.5 to 2 cm long. Sepals spreading, 
chartreuse yellow tinted with pale vinaceous; the veins, reticu¬ 
lations, and margins dull dark purple. Lateral sepals falcately 
