Pinnule of mature F ro n d -u p p e r side.
OSMUNDA GKACILIS.
L in k . K u n z e . S c h o t t .
PL.YL'K TV. V O L . V n i .
Osmunda humilis,
“ p a lits tr is ,
S w e e t ?
L i n k . S w e e t .
Os«!«»dci—Derivation dubious, probably from the Saxon, Osmund.
G ra c ilis—Slender.
A ciiARjUNG delicate-looking flowering F e rn , somewhat
resembling a v e ry delicate Osmunda regalis.
A deciduous h a rd y species.
Na tiv e of N o r th America.
Fro n d s b ip in n a te , th e pinntc opposite or sub-opposite, and
distant; pinnules la rg e in size, about six pairs on each p inna,
with an ultimate la rg e r one, an d this ultimate p in n u le freq u e n tly
connected with one or b o th of th e pinnules immediately below
it. T h e pinnules are sh ort-stalked, and much la rg e r th an in
0 . regalis.
Veins forked, an d less d istin c t th an in 0 . regalis.
Stipes ro u n d ish , n o t h irsu te , and green.
Length, of fro n d about twenty-six inches, of w hich th e basal
twelve to fifteen inches is n ak ed . L e n g th of pinntc e ig h t
VOL. v u i . 0
O S M U N D A G R A C I L I S .
I V - V O L . 3.