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Plate LXXll,
ONOGLE A SEN SIBILIS , L.
Armstrong &. Co Lith Bosto
F E R N S O F NO R TH AM E R IC A . 19 5
P late LX X II.
O NOCLEA S E N S IB IL I S , L in næ u s .
Sensitive Fern.
Onoclea s e n s ib il i s : — Root-stock creeping, elongated ;
stalks scattered, nearly chaffless, a few inches to over a foot
high; fronds dimorphous; sterile ones triangular-ovate, foliaceous,
smooth, quickly withering when plucked, deeply pinnatifid
into several oblong-lanceolate entire or sinuate or
'sinuately pinnatifid segments, the lowest pair sometimes distinct,
the rest connected by a wing which widens upwards ;
the veins reticulated and forming narrow paracostal areoles,
and, outside of these, copious oblong or hexagonal meshes ;
fertile fronds shorter, contracted, rigid, closely bipinnate ; the
pinnules rolled up into berry-like bodies ; veins free, simple
or forked, soriferous on the back; sporangia borne on an
elevated receptacle, half surrounded by a very delicate somewhat
hood-like indusium attached at the base of the receptacle.
Onoclea sensibilis, L innæus, Sp. P I , p. 1 5 1 7 . — Mich.aux, FI. Bor.-Am.,
ii., p. 2 7 2 .— Swartz, Syn. F il, p. 1 1 0 . — S chkuhr, Krypt.
Gew., p. 9 5 , t. 1 0 2 .—W illdenow, Sp. PL, v., p. 2 8 7 . — P ursh,
F l Am. Sept., ii., p. 6 6 5 .— H ooker, Gen. F il, t. Ixxxii ; F l
Bor.-Am., ii., p. 2 6 2 ; Sp. F il, iii., p. 1 6 0 .— T orrey, F l New
York, ii., p. 4 9 9 . — G r a y , ifianual, ed. i., p. 4 5 7 ; ed. ii., p. 59 9 ,
t. x ii; ed. v., p. 668, t. xviii; Botany of Japan, in Mem. Amer.
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