52,4 Ames and Quisumbing: Philippine Orchids, IV 449 
spur or mentum very bright violet-purple; pedicellate ovary 
aster purple; the column violet-purple, with white arms and 
anther. 
Dendrobium Yeageri is closely allied to Dendrobium victoriae- 
reginae Loher, but may be readily separated by the reverse 
distribution of color in the flowers and the entirely smooth 
ecarinate lip. 
This species is dedicated to Dr. C. H. Yeager, of the Rockefel¬ 
ler Foundation in Manila, who accompanied the junior author 
and Dr. W. H. Brown, former director of the Bureau of Science, 
on a trip to the Mountain Province in May, 1932. 
Genus BULBOPHYLLUM Thouars 
BULBOPHYLLUM SURIGAENSE sp. nor. Plate 1, tiffs. 3 and 4; Plate 5, figs. X to »; 
Plate 10, figs. 1 and 2. 
Radices fibratae, numerosae. Rhizoma repens. Pseudobulbi 
monophylli, cylindracei vel semifusiformes, 2.5 ad 3.2 cm longi, 
usque ad 5 cm distantia. Folia valde coriacea, rigida, ad apicem 
rotundata, ad basim attenuata, oblonga vel elliptico-oblonga, 5 
ad 8.5 cm longa, 2 ad 2.8 cm lata, breviter petiolata. Scapus 
folio longior, 12 ad 14.5 cm longus; racemus recurvatus, 3 ad 
3.5 cm longus, bracteis 5 vel 6 vaginantibus. Flores albidi, 2.5 
ad 3.2 cm longi, in racemo perdenso dispositi. Bracteae inflo- 
rescentiae Iineari-lanceolatae, acutae, cucullatae, 6 ad 10 mm 
longae. Pedicelli graciles. Sepala lateralia lanceolato-linearia, 
in apicem filiformem elongatum, obtusa, 5-nervia sensim ex- 
tensa, primum connata, deinde libera, patentia, 3 ad 3.2 cm 
longa, glabra, prope basim ciliata. Sepalum dorsale ovatum, 
cucullatum, circiter 7 mm longum, 2.5 mm latum, 5-nervium, 
margine fimbriato. Petala triangulari-lanceolata, leviter fal- 
cata, acuminata, circiter 3.75 ad 4 mm longa, 3-nervia, margine 
fimbriato. Labellum minutum, anguste triangulare, acumina¬ 
tum, acutum, recurvatum, ad basim cordatum, glabrum, 2.5 ad 
3 mm longum, 1.5 mm latum, bilamellatum. Gynostemium bre- 
vissimum, ad apicem bicuspidatum, in pedem arcuatum 
extensum. 
Roots numerous, fibrous, 0.75 to 1.25 mm in diameter. Rhi¬ 
zomes creeping, stout and woody. Pseudobulbs cylindrical or 
semifusiform, monophyllous, 2.5 to 3.2 cm long, strongly ridged, 
up to 5 cm apart, the young pseudobulbs clothed and almost 
covered with membranaceous, brown sheaths. Leaves oblong 
or elliptic-oblong, dark green, very leathery, firm and rigid, 
petiolate, bilobed at the rounded apex, cuneate at the base, 5 
