914 Evans: THE HEPATICAE OF THE BAHAMA ISLANDS 
side, the innovation usually simple and sterile; bracts obliquely 
spreading, complicate with a sharp keel, deeply and unequally 
bifid, the lobe ovate, mostly 0.45 — 0.6 mm. long and 0.3—0.35 
mm. wide but sometimes considerably smaller, rounded to acute 
at the apex, entire or with an occasional tooth, lobule ovate, 
mostly 0.35—0.45 mm. Jong and 0.18—0.2 mm. wide, usually 
coarsely and irregularly one- to three-cleft in the apical region; 
bracteole slightly connate on one side, ovate, reaching a maximum 
size of about 0.5 X 0.25 mm., bifid about one half with suberect 
acute divisions often reflexed at the apex and a narrow sinus, 
often proliferating at the apex; bracts mostly in two or three pairs, 
rarely in four or five, loosely imbricated, strongly inflated with an 
arched keel roughened from convex cells, unequally to subequally 
bifid with blunt divisions; bracteole usually single, at base of 
inflorescence, similar to the underleaves but smaller: perianth and 
sporophyte not seen. (PLATE 9, FIGURES 13-19.) 
On bark. New Providence: Soldiers Road, E. G. Britton 
(819 p.p., 822); Waterloo, E. G. Britton (721); Maidenhead 
Coppice, E. G. Britton (3220). Specimens from Florida, collected 
by Rapp near Sanford, on April 12, 1903, and later, should be 
referred to this same species. No. 721 may be designated the 
type. 
The specimens above described, although destitute of perianths, 
are so abundant that they give a fairly good idea of the extent to 
which the species varies. The characters to be emphasized are 
the following: the dioicous inflorescence, the basal ocelli, the 
absence of teeth on the leaves, the usually rounded lobes, the small 
leaf cells with their walls apparently uniformly thickened, the lack 
of modified lobules (utriculi, etc.), the small underleaves not 
cordate at the base; the rarity of teeth on the lobes of the peri- 
chaetial bracts and on the bracteoles. The leaf cells bear some 
resemblance to those of the peculiar West Indian C. patentissima 
(Hampe & Gottsche) Evans,* the pits being equally minute and 
difficult to demonstrate; the cell cavities, however, are sometimes 
a little more wavy. The variability in the perichaetial bracts 
deserves a few words of comment. As the figures show, the bract 
subtended by the innovation is usually distinctly smaller than the 
* Bull. Torrey Club 32: 287. pl. 20. f. 19-26. 1905. 
