I- Plate n X .
liiii'i.iilnVriM.t'amliriils.:
C R Y P T O G R A M M E A C R O S T IC H O ID E S , R .B r . ADIANTUM T R IO H O U E P IS , F é e ,
F E R N S OF NORTH AM E R IC A . 99
P l a t e LIX. — F i g . 1 - 5 .
C R Y PTO G R AM M E A C RO ST ICH O ID E S , R. B r o w n .
American Rock-Brake.
C r y p t o g r a m m e a c r o s t i c h o i d e s : — Root - stocks short,
creeping, tufted, chaffy; stalks, densely clustered, stramineous;
fronds ovate, smooth, chartaceous, bi-tripiimate, two to four
inches long, of two kinds; the sterile ones short-stalked, and
with narrowly winged rachises, the ultimate segments crowded,
ovate or obovate, adnate-decurrent, crenately toothed or somewhat
incised; fertile fronds long-stalked, the rachises scarcely
wdnged, the ultimate segments fewer, petiolulate, oblong or
linear-oblong, three to five lines long and scarcely one line
wide; involucres herbaceous, very broad and at first meeting
at the midvein, at length opened o u t; sporangia seated on
the forked veinlets in lines extending down almost to the
midvein, when ripe confluent and covering the segments.
Cryptogramvie acrostichoides, R. B rown, in Appendix to Franklin’s First
Journ., p. 767; Verm. Bot. Schriften, i., p. 549.— H o o k e r &
G r e v i l l e , I c . FIL, i., t. x xix.— H o o k e r , FI. Bor.-Am., ii., p.
264. — M e t t e n iu s , Fil. Hort. Lips., p. 43. — E aton, in Bot.
of U. S. Geol. Expl. of 40th Parallel, p. 396; Ferns of the
South-West, p. 3 1 8 .— -Po r t e r & C o u l t e r , Syn. FI. Colorado,
p. 15 3 . — M o o r e , Ind. Fii., p. 263.
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