NEW OR NOTEWORTHY ORCHIDS 
spreading; petals abruptly rellexed at base. Lateral sepals 
ovate to ovate-lanceolate, 8-8.9 mm. in length along the 
posterior margin, 3-3.9 mm. wide, acuminate, mucronate 
from a dorsal keel near the apex, oblique, concave. Dorsal 
sepal similar, 7.5-8.2 mm. long, 2.7-3.2 mm. wide, acute or 
acuminate, mucronate from a dorsal keel near the apex, 
concave. Petals obliquely linear-lanceolate, 6.1-7.7 mm. 
long, acute with a blunt tip, about 1-2 mm. wide. Labellum 
adnate to the column to the apex; lamina tubular-involute 
with erect sides (disc cannot be flattened without rupture) 
ovate-triangular or triangular-cordate, 4.8-6 mm. long in 
the middle, 2.2-3 mm. wide in natural position, broadly 
auriculate-rounded on each side at base, acuminate, lateral 
margins irregular, disc mostly occupied by a large lobulate 
fleshy callus. Column very short and stout, bluntly 3- 
dentate at the apex with the middle tooth narrower and 
ascending. 
Epidendrum nutantirhachis appears to be closely allied 
to E. microdendron Reichb. f., but it is a stouter plant with 
larger leaves and different lip. Vegetatively it is very similar 
to E. platystigma Reichb. f. 
The description was made from dried specimens. 
Costa Rica, Three miles Northeast of El Copey, H. E. 
Stork 1603, April 18, 1928. 7000 feet altitude. “From 
fallen Oak.” (Type in Plerb. Ames No. 35588); Stork 1657, 
April 20, 1928. 7500 feet altitude. 
Epidendrum Sanchoi Ames Sched. Orch. 4 (1923) 48. 
Several subsequent collections of plants which are re¬ 
ferable to this species show not only very wide variation in 
vegetative proportion and even in flower size, but also indi¬ 
cate that the type description was drawn from a form which 
is vegetatively small and with flowers smaller than those 
frequently found. It seems advisable, therefore, to give 
herewith an amended description. 
Herba valde ramosa, probabiliter semper epiphytica. 
Caulis primarius saepe validus. Folia linearia vel lanceo- 
lato-linearia, in apice minute bilobata, ad vaginas verru- 
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