New West Indian Lejeuneae—ll 
ALEXANDER W. EVANS 
(WITH PLATE 45) 
In the first paper of this series, published in the BULLETIN 
for August 1908, six species of Lejeuneae from various islands of 
the West Indies were described and figured. One of these species, 
Leiolejeunea grandiflora, was proposed as the type of a new genus; 
the others belonged to genera that had been more or less fully 
discussed by the writer in a series of papers on the Hepaticae of 
Puerto Rico.* In the present paper three additional species are 
considered, all from the island of Jamaica. The genera to which 
they belong, Diplasiolejeunea, Leptocolea, and Rectolejewnea, are 
likewise among those discussed in connection with the Puerto 
Rico Hepaticae. The type specimens of the new species are 
preserved in the herbarium of the writer at New Haven, Con- 
necticut. 
Diplasiolejeunea Johnsonii sp. nov. 
Pale green or yellowish, growing in depressed mats: stems 
0.12 mm. in diameter, abundantly but irregularly branched, the 
branches obliquely spreading, similar to the stem but usually with 
smaller leaves: leaves of stems and leading branches closely im- 
bricated, the lobe obliquely to widely spreading, distinctly convex, 
the margin usually revolute in apical and postical portions, 
orbicular-ovate, 1.1-1.5 mm. long, I-1.2 mm. wide, antical margin 
rounded at the base and arching across the axis, outwardly curved 
to the broad and rounded apex, postical margin also curved; 
lobule inflated in carinal portion, otherwise more or less appressed 
to the lobe, obovate, 0.75 mm. long, 0.4 mm. wide, keel arched, 
forming a continuous line with the revolute portion of the lobe, 
free margin scarcely involute except at the very base, apical tooth 
obliquely spreading, triangular, acute or obtuse, tipped by a single 
conical or rounded cell, rarely by two superimposed cells, mostly 
four or five cells long and three to five cells wide at the base, 
proximal tooth obtuse and much shorter, usually consisting of a 
single projecting cell reinforced by a second cell coalescent with 
* Bull. Torrey Club 29: 496. 1902. Et seq. 
603 
