Evans: THE HEPATICAE OF THE BAHAMA ISLANDS 217 
singly: capsule about 0.2 mm. in diameter; spores greenish, 
minutely verruculose, about 16 in short diameter; elaters about 
Qu wide. (PLATE 10.) 
On rocks. New Providence: Maidenhead Coppice, E. G. 
Britton (256 p.p., 3248, 3249); without definite locality, A. E. 
Wright (communicated by W. G. Farlow). The species was 
described by Spruce from specimens which he collected on the 
trunks of palm trees in the vicinity of Para, Brazil. These speci- 
mens were afterwards distributed in Hepaticae Spruceanae. They 
tend to be a little more robust than the Bahamian plants but 
agree with them in all essential respects. No other stations for 
the species are at present known, although its occurrence is surely 
to be expected in the Antilles and in other intermediate regions. 
The great variability of Taxilejeunea obtusangula is one of its 
striking characteristics, and the fact should be emphasized that 
the perianths are often borne on slender branches which show 
the typical vegetative peculiarities of the species much less clearly 
than robust and sterile shoots. The underleaves and the peri- 
chaetial bracts are perhaps the most variable organs. Spruce 
describes the underleaves as imbricated and cordate. The im- 
brication, however, seems to be exceedingly rare except near the 
tips of vigorous branches, and although the cordate condition may 
be considered typical, the majority of the underleaves are rounded 
or even cuneate at the base. The bracts are especially variable 
in their lobules, and there is sometimes a marked difference between 
the outer bract of an inflorescence and the inner bract, especially 
when the latter is the only one subtended by an innovation. 
Under these circumstances the lobule of the outer bract is some- 
times very slightly modified and may be inflated in much the 
same way as on ordinary leaves; the lobule of the inner bract, 
however, is invariably narrow and plane. In other cases the outer 
bract, even when no innovation subtends it, shows the same modi- 
fication as the inner bract. Very frequently the lobule is nothing 
more than a fold at the base of the lobe and can scarcely be dis- 
tinguished when the bract is spread out flat. The perianth is 
remarkable because it develops no beak; it simply contracts at 
the apex to a small circular opening. 
The position of 7. obtusangula in the genus Tawxilejeunea is 
