262 Evans: HEPATICAE OF PuERTO RICO 
plane or nearly so, widely spreading and sometimes arching across 
the axis, usually ovate to oblong, the apex mostly rounded or 
bluntly pointed and the margin entire or minutely toothed from 
projecting cells; lobule (as in Cololejeunea) normally inflated at 
the base and plane or nearly so in outer portion, keel arched, apex 
with a distinct tooth, hyaline papilla in the vicinity of the apex, 
variable in position but proximal rather than distal with respect 
to the apical tooth, free margin bearing a second tooth proximal to 
the apex, sinus lunulate: underleaves wanting: inflorescence usu- 
ally autocious: 9 inflorescence innovating on one or both sides; 
bracts similar to the leaves but often smaller and with a plane 
lobule; perianth broadening out from a narrow base, distinctly 
compressed. 
Type species, Leptocolea micrandroecia (Spruce) comb. nov. 
Lejeunea (Colo-Lejeunea) micrandroecia Spruce, Hep. Amaz. et 
And. 298. 1884. 
A single species of Leptocolea, L. marginata (Lehm. & Lindenb.) 
comb. nov.,* was reported from Puerto Rico by Hampe and 
Gottsche.t In the Hampe herbarium, now preserved in the 
British Museum, there is a small packet labeled ‘“‘L. marginata, 
Porto Rico,” with a pencil mark drawn through the specific name. 
This apparently represents the material upon which the record 
was based. The packet contains a few plants only, but these 
show distinct underleaves and belong to the genus Diplasiolejeunea, 
probably to D. pellucida (Meissn.) Schiffn., a species with which 
L. marginata was sometimes confused by the older authors. 
The collections examined by the writer contain four species of 
Leptocolea, one of which seems to be undescribed. The peculiari- 
ties of L. marginata will be discussed in connection with this new 
species. 
Leptocolea scabriflora (Gottsche) 
Lejeunea scabriflora Gottsche, Abh. Bremen Naturw. Ver. 7: 362. 
1882 (nomen nudum). 
Lejeunea erigens Spruce, Hep. Amaz. et And. 298. 1884 (as 
synonym). 
* Jungermannia ee Lehm, & Lindenb, in Lehmann, Pug. Plant. 5: 11 
1832. Lejeunea marginata Lehm. & Lindenb. in G, L. & N. Syn. Hep. 393. 1845. 
Lejeunea ae ep nao Steph. Nake 27: 287. 1888. Cololejeunea 
marginata Schiffn. Conspect. Hepat. Archip. Indici 245. 
t Linnaea 25: ere ase 
