ORCHIDACE.E 



The type consists of a single specimen and is the only Philip- 

 pine representative of the genus Gastrochilus that has come to 

 my attention. It is a near ally of Gastrochilus calceolaris Don, 

 but the leaves are different from the leaves of that species and 

 the flowers are smaller than those of G. calceolaris. G. sororius 

 Schltr. is also a nearly related species, but with different leaves. 

 Although I have withheld this species from publication since 

 1904, in anticipation of additional material to clarify it, it re- 

 mains unique among the collections of the Bureau of Science. 

 Luzon, Province of Benguet, Baguio, A.D.E. Elmer 6517, June 28, 1904. 



91. OMCEA Bl 



A small genus with one representative in the Philippines. 



1. Omcea philippinensis sp. nov. Epiphytica, pusilla. Caulisil 

 dm. altus, foliosus, circiter 3 mm. in diametro. Folia valde car- 

 nosa, disticha, 3-5 mm. distantia, patentia, lateraliter compressa, 

 oblonga a latere visa, sulcata supra et subter, ad apicem oblique 

 acuta directe ad perpendiculum, in sicco valde rugosa et angulata, 

 usque ad 3 cm. longa, circiter 2 mm. in crassitudine a latere visa. 

 Inflorescentia* axillares, brevissiirae, flores circiter 5. Peduncu- 

 lus quam folia multo brevior, incrassatus, bracteae flores subten- 

 dentes, cymbiformes, triangulares, acutse, circiter 1.5 mm. longse. 

 Pedicellus cum ovario circiter 2 mm. longus. Sepala lateralia 

 circiter 4 mm. longa, lanceolata, concava, leviter carinata, ad 

 apicem conduplicata, acuta. Sepalum dorsale simile, concavum. 

 Petala quam sepala angustiora, linearia, acuta, 3 mm. longa. La- 

 bellum trilobatum, saccatum, lobi laterales triangulares, mem- 

 branacei, valde acuti, .5 mm. longi, ad basim circiter .5 mm. lati; 

 lobus medius cordato-sagittatus, carnosus, acutus, 1 . 5 mm. longus, 

 1.5 mm. latus. Saccus 2 mm. longus, cylindraceus, obtusus, vix 

 bilobulatus. Columna apod a, 1 mm. longa. 



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