Macrostylis decumbens Reichenbach filius in Bon- 
plandia 2 (1854) 11. 
Chloidia flava Reichenbach filius in Walpers Ann. 
Bot. 6 (1868) 644. 
Corymbis flava Hemsley in Godman & Salvin Biol. 
Centr.-Amer. Bot. 3 (1884) 297. 
Corymbis decumbens Cogniaux in Martius FI. Bras. 
3, pt. 4 (1895) 276. 
The lip, the character of greatest diagnostic impor- 
tance in Corymborchis flava, is broadly lanceolate, canali- 
culate, 7-nerved, dorsally carinate along the mid-nerve, 
about 14 mm. long and 5-6 mm. wide below the middle. 
It is broadly rounded on each side at the base and has 
an acute, minutely undulate apex. The disc has a linear 
intramarginal callus on each side extending from the base 
almost to the apex. 
Corymborchis flava is found in the West Indies, Costa 
Rica, El Salvador (7), Panama and South America. 
SPECIMENS EXAMINED: 
Costa Rica: Prov. Cartago, Cartago, at 1300 meters alt., April 
1888, Juan J. Cooper 5999 (Gray Herb. & U.S. Nat. Herb.) ; Finca 
Navarro, at 1350 meters alt., May 21-23, 1906, W.R.Maxon 644 
(Herb. N.Y. Bot. Gard.); Peralta, tall terrestrial orchid, in deep 
forest, May 6, 1926, C.H.Lankester 1127 (Herb. Ames) ; Navarro, 
tall terrestrial (3 ft.), on wooded hillside of Atlantic slope, at 2000— 
4000 feet alt., March 12, 1929, C.H.Lankester 1243 (Herb. Ames). 
Ex Satvapor: Sierra de Apaneca, in the region of Finca Colima, 
*“Coyolillo’’, erect, 2-4 ft. high, in forest, Departamento de Ahuacha- 
pan, Jan. 17-19, 1922, P.C. Standley 20132 [flowers poor] (Herb. Ames 
& U.S. Nat. Herb.). [Owing to the advanced condition of this col- 
lection the determination is open to question. 
Cupa: Santa Catalina, terrestrial, 3-4 ft. high, Jan. 28, 1907, 
C.F. Baker 970 (Herb. N.Y. Bot. Gard.) ; Oriente, Sierra Maestra, 
slopes of ‘‘El Gigante,’’ a rather isolated top southeast of Bayamo on 
Rio Guisa, on the ground, at about 800 meters alt., Jan. 2, 1923, 
E.L. Ekman 16070 (Herb. N.Y. Bot. Gard.) ; Suinor del Rio, 2 meters 
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