to acute. Lamina of labellum ovate, triangular-ovate 
(HZ. santaclarense form) to rarely broadly ovate, obtuse to 
acute. Disc normally with a callus similar to that of the 
typical form, but rarely with the apex somewhat trilo- 
bulate as in var. mixtum (specimen from Cocos Island). 
Column muchas in the typical form, dorsal teeth usually 
lacking, if present they are small. 
Var. imbricatum intergrades strongly with the typt- 
cal form of the species and separation is at times difficult. 
Characters which make for its separation when grouped 
or even alone,—if they are extreme,—are the thicker stems, 
the presence of fine maculation on the leaf-sheaths and 
bracts, the more imbricated and conduplicate bracts 
(which are also apt to be more conspicuous), the tendency 
toward broader and larger leaves and the rather dense 
head-like inflorescences in the more extreme form. 
Epidendrum ramosum Jacq. var. mixtum 
(Schitr.) Ames, Hubbard & Schweinfurth, comb. nov. 
Epidendrum miatum Schlechter in Fedde Repert. 
10 (1912) 294. 
Plant very variable, erect, 15-100 cm. tall, nearly 
simple to heavily branched. Stems rather slender to very 
stout, sometimes flexuous. Leaves ligulate, variable in 
size from 2 cm. long and 4 mm. wide (in the simpler 
slender form) up to 24 ecm. long and about 20 mm. wide 
(large leaves of the main stems in the branched stouter 
form). Inflorescence terminal on the branch or stem, 
usually drooping, racemose, several-flowered. Bracts of 
the inflorescence 6-16 mm. long, somewhat conduplicate 
and carinate on the outer surface,acute, elliptic to elliptic- 
ovate. Flowers similar to the typical form of the species. 
Lateral sepals lanceolate, somewhat asymmetrical, 10-16 
mim. long,2.5—8.5 mm. wide,acuminate, strongly carinate 
at the apex on the exterior surface and usually dentately 
[ 49 ] 
