C H E IL A N T H E S A R G E N T E A .
T h e frond tria n g u la r in form, glabrous, cordately five-angled,
and trip a rtite ; the th re e p rim a ry divisions pinnatifid, th e ir
base b ipinnatifid; pinnæ opposite, the basal pair auriculate
below. T h e frond somewhat concave; margin of frond crenate.
Rachis and stipes ebeneous, of a red d ish colour, slightly
h a iry n ear th e base, and destitute of farinose powder. Rhizoma
sh o rt, th ick , and creeping.
Veins forked.
Sori everywhere continuous; indusium v ery broad, transversely
waved, and crenated. Seed-vessels black and copious, giving
the frond th e appearance of a marginal black belt.
L e n g th of frond four inches, of which the lower two inches
and a q u a rte r is naked.
This species I raised from spores gath e red in Siberia.
I t may be p ro cu re d of Messrs. Veitch, of Chelsea; Cooling,
o f D e rb y ; and Booth, of H am b u rg .
I ’he illustration is from a plan t in my own collection.
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