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CRYPTOGAMITA. FILICES.. 
210: PSILOTUM. Swartz. Hextnssira. Willd. 
Capsules 3-grained, 3-celled; cells opening: 
above, semibivalve. 
se. Stem naked and dichotomous, the branches itrique- 
Pe hee, 
trous; fructification in spikes. 
Species. P. triquetrum. Hap: In Florida, indigenous. 
also to New Holland. Allied.to Lycopedium. 
311. OPHIOGLOSSUM. &£. (Adder’s-tongue.), 
Capsules naked, 1-celled, connate in an arti- 
culated distichal spike, Srunirets opening trans-. 
versely. 
Plants consisting of a ‘Bagle radical nerveless. ‘andi 
‘ mplanate leaf, emitting for the most:part a simple pe-- 
dunculated spike. 
Srecies. 1.0. vulgatum? Frond-eblong-ovate, obtuse, . 
closely reticulated. Probably distinct from the. European. 
species. 2. bulbosum. 3.* pusillum. Spike cauline; frond: 
cordate, acute; root. Has. On the margins of: 
ponds, in. South Carolige-- ae Shs ever more than an: 
inch high. = 
BOTRYCHIUM. Swartz. (Moonwort.) 
Capsules subglobose adnate to the rachis of 
ompound raceme, separate, naked, 1-celled,. 
nnected behind, opening transversely. 
d soltary, ternately decompounded, (or in B. Lu-- 
imply pseudopinnate,) adnate to the scape. 
 fumarisides.- 2. obliquum. Pluk, Mant. . 
Ss dissectum. 4. virginicum, wi gracile. 
. LYG DIUM. ‘Swartz. (Snake’s-tongue, ), 
Spikes unilateral, Capsules in 2 series, open- 
ng on the inner side from the base to the sum-. 
sae (or om parnemiform,. covering: 
sule. 
Be 
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