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ACROSTICHUM AUREUM, L.
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F E R N S OF NORTH AM E R IC A . 93
P l a t e LVIII.
A CRO ST ICH UM A U R E U M , L in næ u s .
Gold en Acrostichum.
A c r o s t i c h u m a u r e u m :—Root-stock short and thick, creeping;
stalks clustered, stout, often several feet long and as
thick as one’s finger; fronds standing in a crown, three to
six feet long, evergreen, smooth above, rarely hirsute beneath,
coriaceous or subcoriaceous, pinnate ; pinnæ numerous, a few
inches to a foot long, half an inch to three inches wide,
short-stalked, elliptical, lanceolate, or oblong-linear, entire, or
rarely auricled on the lower side near the base, the base
acute, rounded or subcordate, the apex either obtuse, acute
or emargi'nate, the edge thickened and often slightly revolute;
terminal pinna commonly distinct; midveins strong, prominent
beneath ; veinlets conspicuous, anastomosing in very fine
oblique-oblong four- to six-sided areoles; the terminal and
some or all of the lateral pinnæ of the fertile fronds covered
beneath with a mass of naked sporangia.
Acrostichum aureum, L in n æ u s , Sp. PL, p. 1 5 2 5 .— M ic h a u x , FI. Bor.-Am.,
ii,, p. 2 7 2 .— S w a r t z , Syn. Fil,, p. 1 3 .— W il ld en o w , Sp. PL, v .,
p. 11Ó . — P u r sh , FI. Am. Sept., ii., p. 6 5 8 . — K a u l fu s s , Enum.
F i l , p. 6 5 . — B r a c k e n r id g e , Fil. U. S. Expl. Exped., p. 8 2 .—
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