Evans: HEpPATICAE OF PUERTO Rico 499 
obliquely spreading, filiform divisions, each consisting of 3 or 4 
cells in a single row, basal portion of underleaf rectangular or 
tapezoidal, 0.05 mm. long, 0.07 mm. wide, abruptly narrowed at 
the base, radicelliferous region surrounded by 6 marginal cells, 3 
on each side, basal marginal cells curved inward, second marginal 
cells forming the rounded lower angles of the basal portion, third 
marginal cells meeting in the middle and giving rise at their junc- 
tion with the second cells to the filiform divisions of the under- 
leaf: inflorescence autoicous: 2 inflorescence borne ona very short 
branch without innovation; leaf at base of branch smaller than 
ordinary leaves, the lobe ovate to rotund, the lobule reduced to a 
single row of cells connate with the lobe; underleaf at base of 
branch broadening from a narrow base, bifid about one half with 
subulate lobes and a broad lunulate sinus ; bracts suberect or ob- 
liquely spreading, scarcely complicate, unequally bifid with narrow, 
long-pointed lobes and lobules, the lobes 0.45 mm. long, 0.07 
mm. wide, margin entire; bracteole connate on both sides at the 
base, linear, shortly bifid with subacute divisions and sinus, margin 
entire, 0.35 mm. long, 0.07 mm. wide above connate base; peri- 
anth somewhat exserted, oblong or obconical from a narrow base, 
broad at the apex and with a short beak, 0.5 mm. long, 0.45 mm, 
_ Wide in upper part, terete below, sharply five-keeled above, the 
keels extending upward and outward as acute or truncate horns, 
smooth or slightly roughened near the apex: or inflorescence 
usually occupying a short branch, rarely terminal on a leading | 
branch ; bracts usually in 2 or 3 pairs, imbricated, strongly in- 
flated, shortly and subequally bilobed with obtuse divisions, keel 
crenulate or denticulate from projecting cells; bracteoles present 
at base of spike, bifid about one half with subulate lobes and ob- 
tuse or subacute sinus; antheridia in pairs: mature sporophyte 
Not seen ( p/. 2 3). 
On living leaves. Between Cayey and Aibonito, Heller (568, 
569); near Mayaguez, Heller (4566 p. p., 4567 p. p.); Cayey, 
Evans (70a p. p.). 
LeproreyEuNEA ELLIPTICA (Lehm. & Lindenb.) Schiffn. 
Jungermannia elliptica Lehm. & Lindenb.; Lehmann, Pugillus, 
5:13. 1833. 
