188 Evans: HEPATICAE OF PUERTO RICO 
usually unicellular teeth: © inflorescence terminal on a leading 
branch or occupying a short branch ; bracts in about twelve pairs, 
imbricated, the lobe ovate, subacute, with three to seven marginal 
teeth, lobule about half as long as lobe, ovoid, keel arched, free 
margin involute, the marginal teeth blunt or obsolete ; bracteoles 
imbricated, similar to the underleaves but more shortly inserted, 
margin varying from entire to minutely crenulate or denticulate : 
mature sporophyte not seen (PLATE 8, FIGURES I-15). 
On living leaves. Puerto Rico, Ba/bis; these specimens, 
growing on orange leaves, were probably collected near the coast. 
Weber describes the type locality of the species as follows: e 
regionibus tropicis in foliis M/usae. Although not so stated, his 
specimens doubtless came from the American tropics where the 
species is widely distributed. ‘ Oware,” * the type locality for 
Jungermannia toriuosa, is the only known African station for the 
plant. 
ODONTOLEJEUNEA SIEBERIANA (Gottsche) Schiffn. 
Leeunea Sieberiana Gottsche; G. L. & N. Syn. Hep. 328. 
1845. 
Lejeunea (Odonto-Lejeunea) Sieberiana Spruce, Hep. Amaz. et 
And. 143. 1884. 
Lejeunea (Odonto-Lejeunea) chaerophylla Spruce, /. c. 147. pl. 
27, 388A, 
Odontolejeunea Sieberiana Schiffn.; Engler & Prantl, Nat. 
Pflanzenfam. 17: 127. 1893. 
Similar in color and in general appearance to O. /unulata: 
stems about 0.12 mm. in diameter, irregularly branched: leaves 
imbricated, the lobe widely spreading, convex and more or less 
revolute along postical margin, falcate-ovate, 1.7 mm. long, I.2 
mm. wide, attached by an almost longitudinal line of insertion, 
antical margin arching across or just beyond the axis, nearly 
straight near base, then strongly curved to apex, postical margin 
approximately straight, apex broad and rounded, whole margin 
sharply dentate with about twenty scattered teeth, each tooth con- 
sisting usually of a cell with a strongly thickened outer wall arising 
from a base two cells wide, teeth along postical margin} somewhat 
larger than the others but not so discrepant in size as in O. /unu- 
fata; \obule suborbicular in outline, 0.35 mm. long, inner half 
inflated but léss so than in the previous species, outer half 
appressed to lobe, free margin curved from base to end of keel, 
* «*Qware’’ is apparently the modern ‘‘ Wari,’’ near the mouth of the Niger. 
