TWO NEW ORCHIDS 
FROM YUCATAN AND TRINIDAD 
BY 
OakES AMES AND CHARLES SCHWEINFURTH 
Among orchids sent to us for identification there 
are two undescribed species, a Pleurothallis submitted 
by the Field Museum of Natural History and an Epi- 
dendrum collected by W. EK. Broadway. These may be 
characterized as follows: 
Pleurothallis yucatanensis Ames & Schwein- 
Surth, sp. nov. 
Herba epiphytica, pusilla. Rhizoma repens, cauli- 
bus numerosis brevissimisornatum. Folia oblanceolata, 
apice rotundato minute bilobulata. Racemi laxiflori, 
pauciflori. Flores pusilli. Sepala lateralia anguste 
lanceolata, uninervia Sepalum dorsale majus, lanceo- 
latum, concavum.  Petala triangulari-linearia. Label- 
lum oblongum, apice late rotundatum, parte inferiore 
leviter dilatata. Columna apice alato-dilatata. 
Plant very small, up to 5 cm. tall, epiphytic, recall- 
ing P. sertularioides Lind]. Rhizome creeping, entirely 
invested by imbricating scarious nervose sheaths. Roots 
fibrous, glabrous, stout for the plant. Stems very short, 
approximate, ascending, unifoliate, about 2.5 mm. long, 
when young entirely invested by imbricating tubular 
searious sheaths. Leaf oblanceolate, 8-15 mm. long, 
about 2.8-3.5 mm. wide, broadly rounded at the apex 
with aminutely bilobed apiculate tip, gradually narrowed 
to a 1-jointed petiole, very rugose in the dried specimen. 
Inflorescence conspicuously surpassing the leaf, solitary, 
about 3 cm. tall; peduncle capillary, adorned below the 
middle with one close tubular sheath; racemes very lax, 
2—~ to 5-flowered. Floral bracts loose, infundibuliform, 
I. 
