ORCHIDACE.E 



elliptic-oblong, very fleshy (not apiculate), 1.5-2.5 cm. long, 

 4-6 mm. wide, acute, contracted into a very slender petiole. 

 Scape exceeding the pseudobulbs, filiform, 1.5-3 cm. long, 

 sheathed at base. Flower solitary, relatively large. Pedicel fili- 

 form, subtended by a tubular obliquely truncate apiculate 

 bract dilated at its mouth. Lateral sepals narrowly lanceolate, 

 caudate-tipped, 12-14 mm. long, about 3 mm. wide near the 

 base. Upper sepal symilsiV to the laterals, 12-14 mm. long, cau- 

 date-tipped. Petals ovate, acute, 5 mm. long, 2.5 mm. wide. La- 

 bellum lanceolate from a cordate base, acute, dilated at the 

 middle^ 3.5-4 mm. long, 2 mm. wide. (From dried specimens it 

 appears to have been strongly convex in life. ) Column short with 

 a minute tooth in front at about the middle." — Ames, loc. cit. 



Philippine Islands: On trees in ridge forest, flowers dark purple, at 

 4500-6800 ft. alt. on Mt. Halcon, Mindoro, November 16, 1906, E. D. 

 Merrill (no. 5832). On the same sheet with the type is a small species of 

 the Monanthaparva section with much smaller flowers and shorter scapes. 



Bulbophyllum (§ Monanthaparva) Pleurothalloides Ames in 

 Philipp. Journ. Sci. {Bot.) 2: 335 (1907). 



'^Rhizome obscure. Pseudobulbs 3 mm. long, much depressed, 

 forming a chain. Leaves about 1 cm. long, 2-4 mm. wide, ob- 

 lanceolate to spathulate, obtuse, minutely apiculate, contracted 

 below into a slender petiole. Scapes filiform, elongated, exceed- 

 ing the leaves, 3 cm. long, with scarious sheaths at base, and 

 with ^ tubular obliquely truncate bract subtending the solitary, 

 minute, brownish yeWow flower. Lateral sepcds lanceolate, acute, 

 about 4 mm. long, 2.5 mm. wide, 3-nerved. Upper sepal similar 

 and equal to the laterals. Petals lanceolate, 2 mm. long, 0.75 mm. 

 wide. Labellum lanceolate-cordate, obtuse or subsagittate, 2 mm. 



[55] 



