Evans: New West INDIAN LEJEUNEAE 607 
July 1903; Clyde Valley, Evans (270), July 1903. No. 104. may 
be considered the type. 
Although L. appressa is fairly large it is not conspicuous be- 
cause both stems and leaves are firmly appressed to the bark. 
The ocelli form a striking feature of the species and are almost 
always arranged in a row of four, extending from the base of the lobe 
outward and thus simulating a short nerve (FIGURE 8). Thecon- 
trast in size between the ocelli and the adjacent leaf cells is usually 
marked but sometimes, especially on the carinal side of the row, 
one or two series of cells are distinctly elongated and form a sort 
of transition between the ocelli and the ordinary cells. Occa- 
sionally similar elongated cells are to be observed in small number 
near the outer extremity of the row. The peculiar contents of 
the ocelli, however, will serve to distinguish them in case of doubt. 
The new species produces gemmae in greater or less abundance, 
and these agree in method of development and in general structure 
with those found in other members of the genus.* Each consists at 
maturity of a flat broadly orbicular disk, about 0.07 mm. long and 
0.09 mm. wide (FIGURE 16). The margin is very vaguely crenu- 
late from projecting cells, there are three organs of attachment, 
and each half of the gemma shows twelve cells, their relative 
position indicating that the apical quadrants in the young gemma 
cut off four segments apiece... The gemmae bear a marked 
resemblance to those of Leptocolea scabriflora (Gottsche) Evans, 
a widely distributed species in the American tropics. 
A close relative of L. appressa is Leptocolea floccosa (Lehm. & 
Lindenb.) comb. nov.,f a species originally described from the 
Philippines but since reported from both Java and Japan. In this 
species, which grows on leaves, the plants are closely appressed, 
just as in L. appressa, the ocelli (usually four in number) form a 
short false nerve, and the outer surfaces of the leaves are minutely 
roughened by rounded verruculae borne singly on the cells. The 
East Indian plant, however, is somewhat smaller, the lobes measur- 
*For a discussion of the genus Lepfocolea see Evans, Bull. Torrey Club 38: 
251-286. pl. 11, 12. 
t= Soo aa fac amine & Lindenb. in ee Pug. Plant. §: 26. 
1832. a floce Lehm. & Lindenb. in G. L. & N. Syn. Hep. 324. 1845. 
Lejeunea PRP floccosa ey Hedwigia 29: et 1890. Cololejeunea floccosa 
Schiffn. Conspect. Hepat. Archip. Indici 243. 1898. 
