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FERNS OF NORTH AMERICA.
P l a t e XX IV . — F ig . i .
T R ICH O M A N E S R A D IC A N S , S w a r t z .
Alabama Bristle-Fern.
T r i c h o m a n e s r a d i c a n s : — Root-stock slender, widely creeping;
fronds very delicate, pellucid, smooth, borne on short winged
stalks, lanceolate or ovate-lanceolate, four to eight inches high,
six to eighteen lines broad (larger in foreign specimens), bipinnatifid
; rachis winged throughout ; pinnæ triangular-ovate, obtuse,
the upper side of the base closely parallel to the rachis, the lower
cuneate ; divisions toothed, or divided into linear lobes ; involucres
usually terminal on the lowest superior lobe of a division,
or on several lobes, tubular funnel-form, margined, truncate at the
mouth, and slightly two-lipped ; columella bristle-like, rising from
the bottom of the involucre, more or less exserted, the included
portion bearing the sporangia.
Trichomanes radicans, S w a r t z , FI. Ind. Occ., p. 1736 ; Syn. Fil., p. 143. —
W i l ld e n o w , Sp. Pl., v ., p. 5 13 . — H o o k e r , Sp. Fil., i., p. 1 2 5 .—
G r a y , in Am. Jour. Sc. and Arts, May, 1853, p. 325. — E a t o n , in
Chapman’s Flora, p. 597. — H o o k e r & B a k e r , Syn. Fil., p. 8 1 .—
F é e , Hist. Foug. et Lycop. d. Antilles, p. 10 9 .— W i l l iam s o n ,
Ferns of Kentucky, p. 123, t. xlviii.
Trichomanes scandens, H edw ig , Fil. Gen. et Sp. (with a plate), not of
Linnæus.
Trichomanes Boschianum, S t u rm , in litt.— V an d e n B o s c ii, Hymenoph.
Syn. Suppl., p. 160.
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