Marsh Fern
In open marshes near the sea I find this plant associating itself with the violet-scented adder's mouth, with glistening sundew, and with gaudy Turk's-cap lilies.
From the New York Fern it may be distinguished easily by the somewhat abrupt instead of tapering base of the frond, by the strongly revolute margins of the fertile frond, and by its long stalk.
PLATE XXVI
MARSH FERN
Fertile frond
Sterile frond
From the Massachusetts Fern it may be distinguished by its forked veins, the less revolute margins of the fertile frond, and by its thicker texture and deeper green.
39. MASSACHUSETTS FERN
Aspidium simulatum (Dryopteris simulata)
New Hampshire to the Indian Territory, in wooded swamps. One to more than three feet high.