ORCHIDACE.E 



The inflorescence is well developed while the leaf is expand- 

 ing, and in several plants which were examined the leaf was only 

 slightly longer than the sheaths when all but three of the flowers 

 were fully open. From Dendrochilum Hutchinsonianum, D. iri- 

 gense is in part distinguishable by the labellum, which is similar 

 to D. affine in the outline of the middle lobe. From D. pumilum 

 and D. affine it is distinguished by its larger flowers. From the 

 rich series of specimens gathered by Santos D. irigense appears 

 to be an extremely variable species in the size of the leaves and 

 pseudobulbs. Santos describes the flowers as yellow. Ramos de- 

 scribes them as being white. When dry the flowers are brownish 

 red. 



Luzon, Camarines Province, Mount Iriga, F. Santos s. n. December, 

 1913. M. Ramos Bur. Sci. 22186, December 31, 1913. Altitude 500 meters. 

 Both collections were made at the same time. 



29. Dendrochilum (§ Platyclinis) latifoliumZ^W/. in Bot.Reg. 

 (1843) Misc. p. 56. 



Luzon, Negros, Mindanao. 



30. Dendrochilum (§ Acoridium) Loheri Ames Orchidace^e 

 3:12,t. 27. 



Luzon. 



31. Dendrochilum (§ Acoridium) longibulbum Ames in Phil. 

 Journ. Sci. 7 : 26. 



Luzon. 



32. Dendrochilum (§ Platyclinis) longilabre Pfitz. in Engler's 

 Das Pflanzenreich Ccelog. 99. 



Mindanao. 



33. Dendrochilum (§ Platyclinis) longispicatum^rae^ Orchi- 

 dace^e 2 : 105. 



Luzon, Negros. 



[59] 



