Rare in Guatemala and:Honduras; widespread and 
rather common in Costa Rica. 
Bothriochilus densiflorus (Rolfe) Ames & Correll 
comb. nov. 
Coelia densiflora Rolfe in Kew Bull. (1906) 375. 
Although Williams, in his contribution concerning the 
genus Bothriochilus (Bot. Mus. Leafl. Harvard Univ. 8 
(1940) 145), had no material of Coelia densiflora with 
which to work, he correctly pointed out that this species 
was undoubtedly referable to Bothriochilus. Since then, 
some excellent material of an inflorescence preserved in 
alcohol and analytical photographs of the species have 
been sent to us from Guatemala by Margaret Ward 
Lewis, thus making it possible for us to study this species 
and to verify Williams’ supposition. Bothriochilus den- 
siflorus is unusual in that the inflorescence is composed 
of numerous (150-200) small white flowers in a dense, 
capitate raceme. 
Apparently endemic to Guatemala. 
Stanhopea Lewisae Ames & Correll sp. nov. 
Herba epiphytica, pseudobulbosa. Pseudobulbus glo- 
bosus vel ovoideus, vaginis fibrosis scariosis in parte cela- 
tus. Folium unicum, terminale; petiolus suleatus; lamina 
elliptica, nitens, apice subapiculata, prope basim plicata, 
cum nervis quinque dorso prominentibus. Inflorescentia 
a pseudobulbi basi dependens, bracteis siccis imbricatis 
tecta. Florum bracteae expansae suborbiculari-ellipticae, 
apiculatae, fibrosae, albidae, valde concavae. Flores 
grandes, spectabiles, cum ovariis pedicellatis papillosis 
obtuse trigonis. Sepalum dorsale oblongo-ellipticum, 
apice carinato rotundatum vel subapiculatum. Sepala 
lateralia oblique ovato-elliptica, apice carinato late obtusa 
vel apiculata, valde concava, basi breviter connata. Petala 
ovato-lanceolata, leviter obliqua, acuta vel breviter acu- 
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