extends to the thickened apex of the lip. Column char- 
acteristic of the genus. 
Ceratostylis caespitosa is noticeably distinct from all 
the other Philippine species of Ceratostylis in its caespi- 
tose habit, in its short comparatively broad leaves and in 
its floral structure. 
Luzon: Montalban, Province of Rizal, October 1912, Loher s.n. ; 
Province of Rizal, September 1909, Loker 14658 (Tyrer in Herb. 
Ames No. 44937). 
Ceratostylis Loheri L.O. Williams sp. nov. 
Herba epiphytica usque ad 8 dm. alta. Caules ramosi, 
vaginis reticulatis obtecti. Pseudobulbi unifoliati. Folia 
linearia, acuta, teretia. Inflorescentia uniflora. Ovarium 
piloso-pubescens. Sepalum dorsale ellipticum, acutum, 
dorso pubescens. Sepala lateralia late lanceolata, dorso 
pubescentia, columnae pedi adnata et mentum formantia. 
Petala anguste lanceolata, glabra. Labellum trilobatum ; 
lobi laterales erecti, obtusi; lobus medius carinatus, re- 
curvus, triangulus; discus plusminusve pubescens. Col- 
umna generis; pes columnae floccosus. 
Epiphytic herbs up to about 3 dm. tall. Stems branch- 
ing, covered with rufous reticulate-nerved sheaths, up to 
about 1.5 dm. long. Pseudobulbs unifoliate, small, slen- 
der, 1-1.5 em. long, covered by sheaths. Leaves linear, 
acute, terete, canaliculate on the inner surface, up to about 
2 dm. long and 2-3 mm. broad. Inflorescence 1-flowered, 
borne laterally in a pocket on the pseudobulb. Ovary 
densely sericeous-pilose-pubescent, about 10 mm. long. 
Dorsal sepal elliptic, more or less acute, 7-nerved, dor- 
sally densely pubescent, about 10 mm. long and 5 mm. 
broad. Lateral sepals broadly lanceolate, dorsally pubes- 
cent, 8-9 mm. long and 4-5 mm. broad, adnate to the 
column-foot and with it forming a distinct mentum. Pet- 
als narrowly lanceolate, 3-nerved, glabrous, about 8 mm. 
[97 ] 
