118 Evans: TAXILEJEUNEA PTEROGONIA 
long and 0.06—0.09 mm. wide, the apex often discrete and sharp 
but sometimes scarcely evident; bracteole free or nearly so from 
the bracts, obovate or oblong, mostly 0.6-0.65 long and 0.35-0.45 
mm. wide, bifid one fourth to one third with a narrow subacute 
to rounded sinus and erect acute or subacute divisions, the margins 
crenulate as in the underleaves and often bearing in addition a 
sharp or blunt tooth on one or both sides; perianth more or less 
exserted, sometimes for about half its length, obovoid, mostly 
0.65-0.9 mm. long and 0.25-0.4 mm. wide, cuneate toward the 
base and truncate at the apex with a short but distinct beak, five 
keeled in the upper fourth or third, the keels very variable, some- 
times rounded and sometimes shiz. 3 in the latter case often winged, 
the wings sometimes narrow and interrupted, sometimes broader 
and continuous, entire or bearing one or two sharp or blunt mar- 
ginal teeth: @ inflorescence occupying a short branch or, rarely, 
a subfloral innovation, very rarely terminating an elongated 
branch, apparently never proliferating; bracts, antheridia, and 
bracteoles as in T. pterogonia. [TExtT-FIGS. I-II 
On banks and rocks, known with certainty ely fom Jamaica. 
The following specimens have been examined: 
JAMAICA: without definite locality, O. Swartz (specimen labeled 
“ Jungermannia debilis”’ in the Mitten Herbarium, received from 
the Hooker Herbarium); Cinchona, January, 1903, L. M. Under- 
wood 241; same locality, October, 1908, E. G. Britton 1062; trail 
from Cinchona to Morce’s Gap, January and February, 1903, 
L. M. Underwood 255, 1231; Clyde River Valley, January, 1903, 
L. M. Underwood 402; same locality, July, 1903, A. W. Evans 
3, 8, 9, 13, 18; same locality, August, 1906, A. W. Evans 337, 
Morce’s Gap and vicinity, February, 1903, L. M. Underwood 
1408, 1420; same locality, May, 1906, D. S. Johnson 49; Mount 
Diabolo, April, 1903, L. M. Underwood 1847; Hardware Gap and 
vicinity, April, 1903, L. M. Underwood 2250; same locality, July, 
1903, A. W. Evans 205 in part; same general locality, March, 
1920, Maxon & Killip 1267; St. Catherine’s Peak and vicinity, 
August, 1906, A. W. Evans 431. 
No. 13, from Clyde River Valley, collected by the writer, 
may be designated the type. 
The most important distinctions between T. jamaicensis 
and T. pterogonia are apparently those derived from the female 
branch-systems. In T. pterogonia these usually exhibit but little 
variation as already brought out, but in T. jamaicensis the range 
