ORCHIDACEJE 



long, 1 mm. wide at base, about 0.5 mm. wide near the tip. Col- 

 umn 1 mm. long." — Ames, loc. cit 



Philtppixe Islands: On mossy trunks of trees at 4500 ft. alt. on Mt. Hal- 

 con, Mindoro, November 14, 1906, E. D. Merrill (no. 6128). 



In habit B. Pleurothalloides is allied to B. cernuwn (Blume) 

 Lindl., but has very different leaves. The general aspect of the 

 plant when in flower recalls some species of Pleurothallis. 



The three Bulbophyllum species which are illustrated in the 

 accompanying plate were collected by Elmer D. JNIerrill, in No- 

 vember, 1906, during the ascent of Mt. Halcon, one of the loft- 

 iest summits in the Philippine Islands. AVhile making thi^ ascent 

 more than one hundred orchid species were discovered by Mer- 

 rill, many of them novelties. These were dealt with in my paper 

 entitled Orchidacece Halconenses, which appeared in July, 1907, 

 in the second volume of the PMliijpineJoui^ncd of Science. Among 

 the Bulbophyllums collected, the three here figured I have been 

 unable to identify with any known species. They belong to the 

 interesting, rather large and puzzling section which Ridley desig- 

 nated by the name Monanthaparva, in allusion to the smallness 

 of the vegetative parts and the relatively small solitary flower 

 on a slender scape. In the habital illustration of B. Pleurothal- 

 loides (II) the contiguous bulbs, which form a rhizome-like chain, 

 are well shown. 



{oQ^i 



