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Itr o S M U U F f . , r i , A V I V L W L r a ,. F ; o S - 5 . u L M 'iN D A G IN N A M C M L A .
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P l a t e X X IX . — F ig s . i , 2.
O SMUN DA C LA YTO N IAN A , L i n n æ u s .
C la y to n ’ s F lo w e r in g -F e rn .
O s m u n d a C l a y t o n i a n a : — Root-stock creeping, massive
with imbricated stalk-bases ; stalks erect, several inches to two
leet high, rounded on the back, less convex in front, clothed
with loose brownish wool when young, never chaffy ; fronds
two to three feet long, standing in a crown, oblong - lanceolate
in outline, somewhat narrowed towards the base, and rounded
or short-pointed at the apex, the sterile ones curving gracefully
outwards, pinnate with numerous oblong-lanceolate rather
obtuse deeply pinnatifid pinnæ ; segments ovate-oblong, oblique,
entire or obscurely crenulate towards the rounded apex; veins
free, usually once forked near the midvein ; fertile fronds taller
than the sterile, and more erect; the pinnæ mostly similar, but
a few (two to four) pairs of those near the middle of the frond
contracted, bipinnate, the slender divisions destitute of green
tissue, and covered with dark - greenish bivalvular sporangia
having a reticulated surface.
Osmunda Claytoniana, L in n æ u s , Sp. Pl., p- 15 21- — S w a r t z , Syn. Fil.,
p , i 5o .— W i l ld e n o w , Sp. PL, v ., p. 9 6 . — P u r s h , FI. Am. Sept.,
ii., p. 657. — T o r r e y , FI. N .Y .. ii., p. 503- — P k e s l , Suppl., p. 68.
— G r a y , Manual, ed. i., p. 634. etc. — E a t o n , in Chapman’s FI.,
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