ORCHIDACE.E 



Java there is a very inconspicuous straight keel between the 

 two undulate carinae which traverse the lower half of the middle 

 lobe of the labellum. In the Philippine specimen taken for com- 

 parison there are three undulate carinas that extend beyond the 

 centre of the middle lobe, the centre one of which in Weber 79 

 from Mindanao extends nearly to the tip of the lip in a broken 

 chain of wart-like calli. Counting the bilobed ears as two teeth 

 and the filament as one tooth, the column is five-toothed, but in 

 dried specimens this character is difficult to study. In alcoholic 

 material prepared for me by Weber the lateral lobes of the col- 

 umn are emarginate rather than bidentate. The truncate emar- 

 ginate-apiculate apex of the lip in the Philippine species is nar- 

 rower than the middle, whereas in the Javan specimen the apical 

 portion exceeds the posterior in width. As a result there is a 

 slight difference in aspect, but this difference may not be con- 

 stant, and would hardly prove diacritical in such a variable part 

 of the flower. The differences in habit are slight and perhaps 

 individual rather than specific. Dendrobhm Kunstleri Hook, f., 

 according to the plate in Hooker's I cones, has three undulated 

 keels and in these agrees with the Philippine plant. J. J. Smith 

 regards Hooker's species as identical with D.flabellum. D. pli- 

 catile is the D. Macrcei Lindl. of my earlier lists of Philippine 

 orchids. In the Gray Herbarium there is a specimen from the 

 vicinity of Manila, Luzon, which Reichenbach f. compared with 

 D. Scopa Lindl., that appears to be the same as D. plicatUe. 

 Mindanao, Leyte, Luzon. 



56. Dendrobium polytrichum^??^ in Phil. Journ. Sci. 2 : 328. 

 Luzon, Mindoro. 



57. Dendi'obium pristinum sp. nov. Caules casspitosi, ± 4 dm. 

 alti. Folia disticha, oblongi-lanceolata. Racemi caulibus aphyllis 



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