ORCHIDACEiE 



The septum of the labellum on the posterior wall of the sac, 

 just above the middle, apparently divides to form a horizontal 

 quadrate plate of tissue ; on the anterior wall of the sac the sep- 

 tum forms the dividing wall between two compartments which 

 in front rise as high as the middle of the sac. In habit similar to 

 Camarotis Manni'i King & Pantling, but with very different inflo- 

 rescence and labellum. C. sterrophylla J. J. Smith from Celebes 

 is different from C. utriculosa in the details of the labellum. 



Mindanao, District of Cotabato, C. B.Robinson Bur. Sci. 11701, June 

 27, 1910. Altitude 5 meters. Column and base of lip white, otherwise 

 the flowers are deep purple. Luzon, collector unknown. Described from 

 specimens flowering in the collection of the Bureau of Science at Manila, 

 August, 1908. Province of Cavite, A. R. Ward s. n. Flower rather light 

 purple. Bloomed in Manila, September, 1913. 



97. SARCANTHUS Lindl. 



The genus Sarcanthus, as now understood, includes those spe- 

 cies which bearonthe posterior wall of the spur, just below the col- 

 umn, a fleshy, variously formed callus, and on the anterior wall 

 either well-defined calli or conspicuous thickenings. The septum 

 in the labellum, which has usually served as a distinguishing 

 trait of Sarcanthus, may be obsolete. 



1. Sarcanthus bifidus comb. nov. Saccolabium bifidum Lindl. in 

 Bot. Reg. 24, Misc. p. 3. Specimens from Leyte which I have re- 

 ferred to Saccolabium bifidum Lindl. are here described in detail, 

 as the original description is very brief. Stems rooting, 4-8 cm. 

 long. Roots fibrous, numerous, elongated. Leaves coriaceous, 5-1 

 cm. long, 1.5-2.7 cm. wide, oblong or elliptical, variable in the 

 same plant, at the apex unequally bilobed, the sheathing bases 

 concealing the stem. Peduncle 9-17 cm. long, pendulous, smooth, 

 longerthanthe leaves, with several bracts below the small flowered 

 raceme. Bracts of the inflorescence triangular-lanceolate, acute, 



shorter than the pedicels, scarious, about 3 mm. long. Pedicels 



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