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P l a t e V I I I . — F ig . 2.
A S P L E N IU M P IN N A T IF ID UM , N u t t a l l .
Pinnatifid Spleenw or t.
A s p l e n i u m p i n n a t i f i d u m : — Root-stock short, creeping,
branched; stalks numerous, clustered, brownish near the base,
green higher u p ; fronds six to nine inches high, herbaceous or
sub-coriaceous, mostly erect, lanceolate-acuminate from a broad
and sub-hastate base, pinnatifid; lower lobes roundish-ovate or
rarely caudate, sometimes distinct, the margin crenated, the upper
ones gradually smaller and more and more adnate to the winged
midrib, the uppermost very short, and passing into the sinuous-
margined long acumination of the frond; veins dichotomous or
sub-pinnate and forking, free; sori few on the lower lobes, solitary
on the uppermost, those next the midrib occasionally diplazioid.
Asplenium phinaiifidum, N u t t a l l , Genera o f N . Amer. Plants, ii., p . 2 5 1 .
-— K u n z e , in Sill. Journ., July, 1848, p. 85. — G r a y , Manual.—
E a ton , in Chapman’s Flora of Southern U. S., p. 592 .— H o o k e r ,
leones Plantarum, t. 927; Sp. Fil., iii., p. p i.'— M e t t e n iu s . Fil.
Hort. Lips., p. 72, t. lo, figs. 1 , 2; Asplenium, p. 1 26. — H o o k er
& B a k e r , Syn. Fil., p. 194.
Asplenium rhizophyllum, var. pinnatifidum, M u h l en b e r g , Catalogus Plant.
Am. Sept., ed. ii., p. 102. — B a r to n , Compendium Flora; Philad.,
ii., p. 210. — E aton ,^ Manual of Botany, ed. iii., p. 188, etc.—
T o r r e y , Compendium, p. 383.
* Prof. A mos E aton, grandfather of the present writer. E ato n ’s “ Manual
o f B o t a n y ” went through eight editions from 18 1 7 to 18 4 1.
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