ORCHIDACE.E 



a specimen collected by the Wilkes Expedition appears to be- 

 long here. Reichenbach f. identified this as D.jnnceum Lindl. It 

 is without flowers. 



Leyte, Mindoro, Luzon. 



53. Dendrobium planibulbe Lindl in Bot. Reg. (1843) Misc. 

 54. To this species I refer specimens gathered by Weber in Min- 

 danao. The stems at the base are slender and terete, just above 

 the base they are bulbous, flattened, and about 3 cm. long by 1 cm. 

 wide, above the bulbous portion the stem becomes slender again 

 and bears about eight oblong emarginate leaves, 3.5 cm. long by 

 7 mm. wide; the upper portion of the stem above the leaves is 

 naked and flower-bearing. Flowers 12 mm. across, white. Petals 

 5 mm. long, the margin somewhat shortly fringed. Labellum 

 about 8 mm. long, cuneate at the base, three-lobed ; lateral lobes 

 equalling the fringed middle lobe; middle lobe 2 mm. long, trun- 

 cate in front, at the base provided with a three-pointed callus. The 

 specimens before me are from 8-34 cm. tall. D. planibulbe has 

 been confused with D. Blumii Lindl., a Javan species. The mid- 

 dle lobe of the labellum is hardly linear as described by Lindley. 

 D. tuberiferum Hook. f. Ic. PL t. 2025 is a near ally of D. plani- 

 bulbe, but differs from it in the middle lobe of the labellum. 



Mindanao, Province of Agusan, Talacogon, Agusan River, C. M. Weber 

 174- (Hb. Ames 12300), July 20, 1911. 



54. Dendrobium platycaulon R. A. Rolfe in Kew Bull. (1892) 

 139. 



55. Dendrobium plicatile Lindl. in Bot. Reg. (1840) Misc. 10. 

 Between this species and a cultivated specimen from the Buit- 

 enzorg Botanic Garden identified by J. J. Smith with D.Jlabel- 

 lum Reichb. f. there are slight differences which are surely too 

 inconsequential for specific differentiation. In the specimen from 



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