ORCHIDACE^E 



cavum quam sepala lateralia angustius, vix 6 mm. longum. Petala 

 oblonga, obtusa, trinervia, 5 mm. longa, vix 2 mm. lata. Label- 

 lum erectum, concavo-cymbiforme, basi fere saccatum, subor- 

 biculare, integrum, 6 mm. longum, 4 mm. latum, acutum, intus 

 costis tribus, media duplici apicem versus evanescenti, lateralibus 

 ultra medium disci terminantibus. Gynostemium breve. 



Eria zamboangensis is a near relative of E. cymbiformis J. J. 

 Smith, from which it is readily distinguishable by means of 

 the entire labellum. From E. palawanensis Ames, which has an 

 entire labellum, it is in part distinguished by its much broader 

 leaves. The central callus on the labellum is very fleshy and ter- 

 minates rather abruptly. The lateral calli or keels are membrana- 

 ceous and in dried specimens lie flat, the margin overlapping the 

 margin of the labellum. At the apex each keel is free and from 

 the material examined appears to be thickened and tubercular. 



Mindanao, District of Zamboanga, E. D. Merrill 8143, Sax River Moun- 

 tain. Altitude ±1100 meters. November to December, 1911. 



65. BULBOPHYLLUM Thou. 



This is a vast genus, which contains approximately seven hundred 

 species. As at present understood, it is the richest in species of all 

 orchid genera. Eighty-six members of the genus have been re- 

 ported from the Philippines on reliable information. To this num- 

 ber one might add at least a dozen species which have been cred- 

 ited with Philippine origin, but which are undoubtedly extra-lim- 

 ital. The section Racemose, represented by forms which belong 

 to Schlechter's § Aphanobulbon, is characterized by the absence 

 of distinct pseudobulbs, and is one of the largest sections in the 

 Philippines. A key to this section was published in the Philippine 

 Journal of Science (7 : 128), which includes all species described up 

 to August, 1912, to which a Philippine origin could be assigned. 



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