TlMEHRI. 
French Guyana, LEPRIEUR ; Surinam, HOSTMAN ; 
British Guiana, JENMAN n. 645, Mazaruni and Issororo 
Rivers. The branches are very flat, and measure 4-5 li. 
over all. As in S* caudorhiza, the lateral leaves do not lap 
on the upper base over the rachis, except in the outer 
branches, where the character is soon lost. The bulging 
out of the bra6ls at the base of the spikes with the large 
macrospores is a good feature. It is one of the limp 
weakly species, though the parts are relatively large. 
General distribution — Endemic. 
ttt Fronds upright. — Species 18-21. 
* Fronds rigid. — Species 18. 
18. Selaginella vernicosa, Baker, in Lin Soc. Jour.— Fronds 
rooted at the base, stiff, 3-6 or more in. 1. with short alternate 
distant or sub-distant divaricating branches on which the fertile 
branches are produced in a similar and divaricating manner. Primary 
rachis \\ li. across the leaves, the branches i-i£ li. across ; convex on 
the under side, concave on the upper. Major leaves densely imbri- 
cating, obliquely spreading, auricled and deeper on the upper side, the 
end rounded, the upper margin much curved and finely spinulose-serrate, 
the under naked and nearly straight, about \ li. 1. less w. Minor leaves 
very densely imbricating, the two lines also laterally overlapping, ovate, 
acute, equilateral, both margins freely ciliate, about ird li. 1. Spikes 
3-4 li. 1. terminating all the branches ; bra6ts keeled, rather open. 
Var. simplicifrons. — Branches erett, all reaching forward parallel 
with each other ; rather narrower. Margins of the leaves less ciliated. 
Spikes firmer and more angular. 
IM THURN, n. 226. Roraima, base of the cliff. This 
is a stiff rigid species, with densely imbricating leaves 
that entirely enclose and conceal the rachises. The 
physiognomy is quite different from that presented by 
any of the other species. The variety, IM THURN, n. 
381, was gathered lower down near the encampment. 
It has no spreading lateral branches like the type, they 
