HARPALEJEUNEA OVATA (8 
keel broadly winged in lower half, the wing entire, semicircular to 
semiovate in outline, lobe ovate, obliquely spreading, rounded at 
apex, subcordate at base, irregularly sinuous on margin, 0.95 mm. 
wide, rounded at apex and with a short, broad beak, somewhat 
compressed in upper half with sharp lateral keels, postical keel 
broad, sharply two-angled and with a short, supplementary fold 
near apex, antical keels one to three, low and short: ¢ spikes 
spikes borne on leading branches, usually proliferating and repeat- 
edly floriferous, bracts in about six pairs, less spreading than the 
leaves, the lobe not falcate, lobule nearly as long as lobe but nar- 
rower, inflated, apex blunt to subacute, margin eñtire; bracteoles 
similar to underleaves, found throughout spike. 
Type-locality, Jamaica (Herb. Lehm. & Lindenb.). 
Ontrees. Lake Worth, Florida (Underwood). The species 
has a rather wide distribution in tropical America. 
Brachiolejeunea corticalis has not before been recorded from the 
United States. The Florida specimens, however, agree closely 
with the type and also with the specimens from Cuba, distributed 
in Hep. Amer. 144. There is no danger of confusing the species 
with any of our other Lejeuneae except possibly Mastigolejeunea 
auriculata, under which the most important differences have already 
been enumerated. 
The genus Brachiolejeunea has several representatives in trop- 
ical America, and among them 2. bicolor (Nees) Schiffn. is perhaps 
most closely related to B. corticalis. B. bicolor is a more robust 
plant, the lobes of its leaves tend to be more sharply pointed, its 
underleaves are more or less auriculate at base and its perianth is 
regularly pluriplicate, usually with ten distinct folds in the upper 
part. 
6. HARPALEJEUNEA OVATA (Hook.) Schiffn. 
Jungermannia. serpyllifolia $ ovata Hook. Brit. Jung. 1816 
(not figured). 
Lejeunca ovata Tayl.; G. L. & N. Syn. Hep. 376. 1845. 
Lejeunea (Harpa-Lejeunea) ovata Spruce, Hep. Amaz. et And. 
165. 1884, 
