CHEILOLEJEUNEA PILILOBA 147 
branches. C. versifolia also differs from C. phyllobola in its 
smaller size, in its much smaller leaf-cells which scarcely vary 
in size throughout the lobe, in its basal ocelli, in its more sharply 
pointed lobules and in its relatively larger underleaves. 
Another West Indian species closely related to C. versifolia is 
C. emarginuliffera Schiffn.,* a Cuban plant likewise collected and 
distributed by Wright. According to its author this species has a 
more graceful habit than C. versifolia, its branches are less numer- 
ous and are never flagelliform, its leaves are more distant and their 
lobules are less conspicuously toothed at the apex, its basal ocelli 
are either wanting or very inconspicuous, its underleaves are smaller, 
more distant and with a broader sinus, and its female plants are 
repeatedly floriferous. The fragmentary material distributed in 
Hepaticae Cubenses shows that these slight differences certainly 
exist, but it would require the examination of many more specimens 
before it could be decided whether they were constant enough to 
be considered specific. In fact Schiffner himself throws doubt on 
the validity of the species. 
12. Cheilolejeunea pililoba (Spruce) 
Lejeunea (Eulejeunea) pililoba Spruce, Jour. Linn. Soc. Bot. 
30: 346. M. 23. f. 6-8. 1894. : 
Pale to dark green, caespitose : stems prostrate, 0.07 mm. in 
diameter, irregularly branched : rhizoids few : leaves contiguous to 
imbricated, the lobe obliquely spreading, plane, broadly ovate to or- 
bicular, 0.4 mm. long, 0.35 mm. wide, rounded to very obtuse at 
apex, margin crenulate from projecting cells or subentire, antical 
margin arching across or just beyond axis, rounded or sometimes 
abruptly contracted at base; lobule filiform from a minute, tri- 
angular base, 0.17 mm. long, 0.01 mm. wide, consisting of two 
to twelve cells in a single row, rarely two or three cells wide at 
or near base ; cells of lobe slightly convex, thin-walled, trigones 
minute, often scarcely evident, intermediate thickenings wanting, 
cells averaging 14 at edge of lobe, ۸ in the middle and at 
base : underleaves distant or contiguous, ovate or narrowly ovate, 
0.25 mm. long, 0.13 mm. wide, narrowed toward base, bifid to or 
beyond the middle with erect, lanceolate, acuminate lobes and obtuse 
to lunulate sinus, margin as in leaves : inflorescence autoicous : 9 
inflorescence borne on a short branch or on a leading branch, 
تست‎ E E a 
سسس 
* Engler's Bot. Jahrb. 23: 585. 1897. 
i 
