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F E R N S OF NORTH AM E R IC A . 2 8 5
P l a t e X X X V III . — F ig . 1-3 .
ADIAN TUM EM A RG IN A TUM , P Io o k e r .
Californian M aid en -H a ir .
A d ia n t u m e m a r g in a t u m : — Root-stock creeping, scaly ;
stalks clustered, a few inches to a foot long, wiry, dark and
shining, like the rachis and branchlets; fronds six to twelve
inches long, mostly erect, broadly ovate or deltoid-pyramidal,
twice or thrice pinnate at the base, simpler upwards; pinnæ
obliquely spreading, lower ones half as long as the frond; pinnules
long-stalked, four to fifteen lines broad, roundish or semicircular,
or even somewhat reniform, lower sides entire; outer
edge rounded, slightly two to five-lobed, finely and sharply
toothed in the sterile fronds, but in the fertile recurved to
form pale transversely elongated involucres ; veins flabellately
forking, the veinlets extending to the ends of the teeth.
Adiantum emarginatum, H o o k e r , Sp. Fil., ii., t. Ixxv., A, not of Bory
and Willdenow. — K e y s e r l in g , Gen. Adiantum, in Mem. Acad.
Petrop., ser. vii., xxii., No. 2, p. 15, 37. — E aton , Ferns of the
South-West, ined.
Adiantum Chilense, T o r r e y , in Pacif. R. R. Survey, iv., p. 160, vii., p.
2 1 . — B r a c k e n r id g e , Ferns of U. S. E x . Exped., p. 9 7 ,—
E a to n , in Botany of the Mexican Boundary, p. 233, and in
Robinson’s Catalogue, not of Kaulfuss.
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