236 ORCHIDACEM 



9 mm. longum a basi columnae ; lobi laterales 4.5 mm. longi, 

 oblongi, prope apicem latissimi, obtusi, dente triangulari mem- 

 branaceo extrorso intra marginem posteriorem prope basim ; lobus 

 medius obcordatus, 5 mm. longus, 4.5 mm. latus, apice valde 

 emarginato ; ad basim lobi medii callus albus, bidentatus vel bif ur- 

 eatus. 



Type in bb. Ames, from living material collected by E. D. Mer- 

 rill and sent from Mt. Mariveles in 1905 (hb. Ames no. 10055). 



— Prov. Rizal, Luzon, August, 1905, Ahern's collector (no. 3238). 



— A. Loher (no. 6028). — Prov. Davao, Mindanao, May 1, 1906, 

 Rev. R. F. Black. — Prov. Cagayan, Luzon, August 16, 1906, 

 W. Klemme (no. 5258). — Bosoboso, Prov. Rizal, Luzon, October, 

 1906, Maximo Ramos (no. 2019). 



CLEISOSTOMA Bl. 



C. BICOLOR Lindley in Paxton's Fl. Gard. 2 : 99, 100, f . 185 

 (1851-2); Reichb. f. in Walp. Ann. 6: 889; Vidal ex Naves Nov. 

 App. 239. 



" Scapo elongato simplici apice tantum florido, sepalis laterali- 

 bus abbreviatis falcatis planis apice rotundatis, labelli lobis latera- 

 libus truncatis angulatis intermedio parvo ovato decurvo, calcare 

 crasso brevi scrotiformi saccato, appendice membranacea triangu- 

 lari bidentata." — Lindley, I. c. 



A liana-like epiphyte. Stem near the inflorescence 3-6 mm. thick. 

 Leaves ± 12 cm. long, about 2.5 cm., sometimes 3.5 cm., wide. 

 Floioers fleshy, yellowish, " mottled " with purple. Lateral sepals 

 7 mm. long, elliptical, with a short oblong claw. Upper sepal 

 oblanceolate, obtuse, about 1 cm. long. Petals broadly spath- 

 ulate, 8 mm. long. Apical lobe of lip orbicular-cordate, acute, very 

 fleshy, about 2 mm. long ; lateral lobes triangular ; from base of 

 column to bottom of sac 5.5 mm. 



