em. long when spread out, 7 mm. wide, acute, 9-nerved 
at the base. Lateral sepals similar, about 2.8 cm. long, 
7.6 mm. wide, acute, 9-nerved at the base, slightly ob- 
lique. Petals elliptic, about 2.5 cm. long and 11.8 mm. 
wide, acute, 9-nerved near the base. Lip surrounding the 
column, subquadrate-obovate in outline, simple, bilobed 
at the apex with each lobule again bilobed near the centre 
of the lip, about 3.1 cm. long from the base to the tip 
of a lobule and about 11.9 mm. wide near the apex; lam- 
ina with the margin irregularly crenulate, provided near 
the base with a pair of closely approximate semiellipsoid 
calli in front of which is a small transverse fleshy thick- 
ening, from near this thickening to near the middle sinus 
between the lobules there is a slightly elevated undulate 
white keel. Column slender, abruptly dilated at the a- 
pex, about 12.3 mm. long measuring along the anterior 
grooved surface, irregularly lobulate above; rostellum 
3-lobed with the small lateral lobes subquadrate and 
truncate-retuse and the very short and broad mid-lobe 
shallowly retuse. Anther persistent, incumbent, 2-celled 
with each cell 2-chambered. Pollinia apparently eight, 
each pair connected by a fleshy-granular transverse band. 
Lindsayella amabilis superficially resembles a delicate 
small-flowered Sobralia or Fregea. However, the flowers 
resemble Elleanthus in having a basal pair of calli on the 
lip, but differ from the flowers of that genus in being 
relatively very large occurring singly (rarely two being 
produced on each stem). In addition to the differentiat- 
ing characters exhibited by the inflorescence and lip, the 
structure of the column and the form of the pollinia serve 
to separate Lindsayella from all of the allied genera. 
Panama, Province of Chiriqui, El Valle. At 2000 feet altitude. In 
crevices of rocks or more rarely on a very large dead tree. July 22, 
1935. Walter R. Lindsay and G. H. Bevins s.n. (Tyee in Herb. Ames 
No. 45675.) 
[ 35 ] 
