ORCHIDACEM 



99 



wide. Upper sepal oblong, broadest above the middle, obtuse, 

 3-nerved, 3 mm. long. Petals broadly cuneate-obovate, broadest 

 above the middle, 3-nerved, obtuse or subacute, 2 mm. long, 

 slightly more than 2 mm. wide. Labellum contracted-sagittate, 

 3-lobed ; the middle lobe bluntly apiculate or obscurely 3-lobed; 

 the lateral lobes blunt and rounded, with a large truncate tuber- 

 cle at the base of each near the outer margin ; on the median line 

 or disc of the lip a minute, very obscure papilla. Column short, 

 with a very prominent protuberance in front. 



In the herbarium of the Bureau of Science at Manila this species 

 and D. ocellatum are mounted on the same sheet. Both species 

 were collected by Mr. Merrill at the same time. Only four plants 

 were found, two of each species. D. oliganihum belongs to that 

 group of species which have the lateral lobes of the lip much 

 smaller than the middle lobe, and which merge with D. Whit- 

 fordii and D. ocellatum. 



Alt. 7000 ft., Mt. Data, Distr. Lepanto, Luzon, October 29, 1905, 

 E. D. Merrill (no. 4481b). 

 Endemic. 



22. D. HASTATUM sp. nov. Pseudo- 

 bulbi f usiformes, circa 1 cm. longi. Folium 

 4-5 cm. longum, lanceolatum, chartaceum, 

 in siccitate conspicue 3-nervium, prope api- 

 cem constrictum, subacutum. Petala 2 cm. 

 longa. Pedwiculus infra racemum filifor- 

 mis, folio longior. Racemus pauciflorus. 

 Flores 3 mm. distantes, sicci rubidi. Brac- 

 tem 2 mm. longae. Sepala lateralia 3 mm. 

 longa, ovato-lanceolata, acuta. Sepalum 

 dorsaleS mm. longum, oblongi-lanceolatum. 

 Labellum 2 mm. longum, hastatum, carno- 

 sum ; lobi laterales triangulares acuti ; inter 

 eos in disco callus carnosus ; lobus medius Dendrochilum hastatum 



