ORCHIDACEiE 



nudus, usque ad 13 cm. longus. Racemus pendulus usque ad 5 

 cm. longus. Flores distichi, flavidi vel albiduli. Bracteas inflores- 

 centiae cuneato-ovatas, acutas, vix 2 mm. longa? flores aequantes. 

 Sepala lateralia anguste lanceolata, valde acuminata, acuta, ad 

 apicem subulata, uninervia, 2 mm. longa. Sepalum dorsale simile 

 ad basim circiter .5 mm. latum. Petala quam sepala multo brevi- 

 ora linearia, valde acuta, 1.5 mm. longa, erecta. Labellum quadri- 

 lobatum, .75 mm. longum, lobi laterales minuti, ovati, obtusi; 

 lobi terminales semiovati, obtusi, .5 mm.longi, apiculo interpositi, 

 vel labellum trilobatum lobo medio late cuneato, valde eraar- 

 ginato cum apiculo ad apicem. Ad basim lobi utriusque lateralis 

 in margine interiore callus vel papilla ; papilla? minutae. Columna 

 sectionis. 



Dendrochilum quadrilobum in general habit resembles D.par- 



vulum and JD. tejiue, but the structure of the flowers indicates 



specific differences. The middle lobe of the labellum is larger than 



the lateral lobes with a cuneiform open space at the tip which 



gives a four-lobed appearance when taken in conjunction with the 



lateral lobes. In both D. pai'vulum and D. tenue the middle lobe 



hardly exceeds the lateral lobes. In D. quadrilobum, on the other 



hand, the middle lobe conspicuously exceeds the laterals, giving 



an aspect suggestive of the labellum oiMalaxis quadriloba Ames. 



Luzon, Subprovince Ifugao, Mount Polis, R. C. McGregor Bur. Sci. 

 19894, February 11, 1913; McGregor Bur. Sci. 19896. 



52. Dendrochilum ( § Platyclinis) Ramosii A mes in Phil. Journ. 

 Sci. 8 : 410. 



Luzon. 



53. Dendrochilum (§ Acoridium) recurvum Pjitz. in Engler's 

 Das Pflanzenreich Ccelog. 116. 



Luzon. 



[62] 



