ORCHIDACE^ 



biguous species, but taken in conjunction with the material in the 

 herbarium of the British Museum it is reasonably serviceable. 

 At least it is conclusive, in my opinion, in determining that 

 Reichenbach's plant was a Dendrochilum, and to make that 

 point sure is to advance toward a comprehension of what he 

 described as D. pumilum. The semifusiform pseudobulbs, about 

 1 inch long, the linear-lanceolate leaves, 3 inches long, the macu- 

 late sheaths, the large floral bracts, subequ ailing the ovaries, the 

 lanceolate sepals and broader cuneate-ovate petals, and the very 

 short labellum and gynostemium, described by Reichenbach, 

 are descriptive of the material in the British Museum, and are 

 furthermore characteristic of a small group of Philippine species 

 which belong to §Acoridium. These facts, taken together with 

 the Cuming specimen and the number under which it was dis- 

 tributed, leave very slight doubt in my mind regarding D. pu- 

 milum. Reichenbach's description of the labellum is, it is true, 

 quite inadequate, but not wholly without value when interpreted 

 by the Cuming plant in the British Museum. 



To establish absolute certainty regarding 2). j9W7?zz7mw, nothing 

 but the type specimen, which is presumably deposited in Reich- 

 enbach's sealed herbarium, will suffice; but in the absence of 

 that, there appears to be no well founded reason for disregard- 

 ing the specimens distributed by Cuming under no. 2102. It 

 was on this evidence that I included D. pumilum in my list of 

 Philippine orchids in the second fascicle of this series, and pub- 

 lished a camera-lucida drawing of a flower taken from the speci- 

 men in the British Museum. 



Dendrochilum rhombophorum (Reichb. f.) comb. nov. In 

 connection with D. pumiluvi, mention should be made of Coelo- 

 gyne {Pholidota) rhombophora, a Philippine species described by 



