SCHEDULAE ORCHIDIANAE 
NO. 4 
Additions to the Orchid Flora of Central 
America with Observations on 
Noteworthy Species 
BY 
OAKES AMES 
I N this paper I have proposed one new genus and forty 
new species. These represent for the most part Costa 
Rican orchids sent for identification by Captain Arthur W. 
Hill, Director of the Royal Gardens, Kew, and by C. H. 
Lankester. Several species from Panama which appear to 
be new are included, these having been detected in recent 
collections made by C. W. Powell near Panama City. I 
have also included several species which demand attention 
at this time because they have remained obscure since the 
date of publication or have been misunderstood in recent 
work on the orchids of Central America. For the oppor¬ 
tunity to illustrate and amplify the original descriptions 
of Epidendrum gravidum Lindl. and E. trachycarpum Lindl., 
two Mexican orchids which have been extremely perplexing 
because insufficiently characterized when proposed, I am 
indebted to the Director of Kew, who supplied flowers from 
the type specimens. The vegetative parts of E. trachy¬ 
carpum and the raceme of E. gravidum were drawn with the 
aid of the camera-lucida from photographs preserved in 
my herbarium, these photographs having been taken from 
the type specimens. The type specimen of E. gravidum 
consists only of a raceme. Lindley did not have the pseudo¬ 
bulbs and leaves of this species. 
1 
