EvaANs: HEPATICAE OF PUERTO RICO 269 
spreading, scarcely or not at all falcate, ovate to oblong, 0.75 mm. 
long, 0.5 mm. wide, rounded at the apex but tipped with a cluster 
of more or less divergent hyaline cells, antical margin arching a 
little beyond the axis, outwardly curved from base to apex, some- 
times with a few hyaline but not divergent cells, postical margin 
straight or nearly so, continuous with the keel or slightly indented at 
the junction, margin entire (except for the hyaline cells at the apex) ; 
lobule inflated throughout the greater part of its extent, ovate, 
0.17 mm. long, 0.1 mm. wide, apical tooth consisting of two cells 
in a row or of a single cell, hyaline papilla borne at base of apical 
tooth on the inner surface, proximal tooth near the apex, obtuse 
or rounded, sometimes obsolete, keel slightly arched; cells of lobe 
plane, averaging 14u along the margin, 18 X 16u in the middle, and 
30 X 16u at the base, thin-walled but with minute local thickenings 
(as in L. planifolia), hyaline cells thin-walled throughout: inflor- 
escence autoicous: ? inflorescence usually borne on a more or less 
elongated branch, rarely on a very short branch, innovating on one 
side, the innovation often soon floriferous; bracts similar to the 
leaves, unequally bifid, complicate, the lobe of about the same size 
as in the leaves,the lobule about 0.2 X0.13 mm., crenulate or dentic- 
ulate in the upper part; perianth about one third exserted, ob- 
ovate, 0.55 mm. long, 0.4 mm. wide, truncate or slightly retuse at 
the apex and with an indistinct beak, antical surface plane or nearly 
so, postical surface with a broad two-angled keel, surface smooth 
or slightly roughened from projecting cells: @ inflorescence occu- 
pying a short branch or terminal on a leading branch, not prolifer- 
ating; bracts mostly in 5 to 15 pairs, imbricated, diandrous, smaller 
than the leaves, the lobe obliquely spreading, rounded at the apex, 
lobule half as long or longer, keel strongly arched, crenulate, free 
margin with a few crenulations at the apex. (PLATE 12, FIGURES 
I-3.) 
On bark, more rarely on living leaves. North slope of the 
Luquillo Mountains, Heller (4562). Three miles east of Santurce, 
Heller (464, in part). Seven miles south of Caguas, Heller (288, 
in part). Near Cayey, Evans (71, in small part). Widely dis- 
tributed in tropical America but rarely abundant. The following 
localities may also be quoted: Cuba, the type station, Ramon de ia 
Sagra; Mexico, Liebmann; Brazil, Spruce. The type specimen in the 
Montagne herbarium agrees closely with the Puerto Rico material. 
The original description and figures of L. cardiocarpa by Mon- 
tagne are so clear and so complete that it has been possible to add 
only a few unimportant details. At the same time, in spite of its 
distinctness, the species has been more or less misunderstood by 
