flowers in several ranks. It is a very distinct species with 
no close affinities in Middle America, although the struc- 
ture of the labellum suggests S. ciliaris Lindl. The flow- 
ers of Lankester no. 1175 are larger than the type, the 
sepals being about 1 mm. longer and smooth. Structural- 
ly the plant is inseparable from Alfaro’s no. 141. 1 think 
it is probable that glandulousness in this case is of little 
consequence because the glandular emergences are readily 
rubbed off, and very often smooth and glandular sepals 
are characteristic of flowers which are beyond doubt re- 
ferable to the same species. 
Costa Rica, El Salvaje, Candelaria, Flowers chocolate, in four 
ranks. At 1,700 meters altitude. August 3, 1925. Anastasio Alfaro 
141. (Type in Herb. Ames No. 30989.) (Under this same number, 
two other collections have been distributed. The plants are conspecific 
with those from El Salvaje. The data accompanying them are as follows : 
Estrella Valley. Flowers prune-purple. At 50 meters altitude. Novem- 
ber 23, 1925. Alfaro 141; Estrella Valley, ‘*Pandora.’* Flowers pansy- 
purple. At 50 meters altitude. September 12, 1925. Alfaro 141.); 
Satanillas de Acosta. Leaves up to 3% inches long, succulent. Sepals 
Corinthian purple (Ringway xxxviii), petals and lip glistening as though 
wet with dew. Anthers nearly white, tinged with purple. At 5,000 
feet altitude. August 1927 (flowered under cultivation at Cartago, 
October 27, 1927). C.H. Lankester 1175. 
In 1925, I received from C. H. Lankester a Costa 
Rican species of Stelis which appears never to have been 
described. It is without close allies, although the struc- 
ture of the labellum indicates relationship with iS. pur- 
purascens A.Rich. & Gal. The inflorescence is remark- 
able because the flowers do not conform to a fixed plan 
in their arrangement on the rachis. Some of the flowers 
are transversely attached. This peculiarity of the inflo- 
rescence is clearly shown in the accompanying illustra- 
tion. For this species the name Stelis transversalis is 
proposed. 
[87 | 
