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152 F E R N S OF NO R TH AM E R IC A .
and by another author to be deficient, and some species in
which the indusium, though discernible, is almost lacking,
there is every propriety in referring Phegopteris to the tribe
Aspidiece. One recent author has even united the two genera.
Plate LX V .— Phegopteris hexagonoptera, from New Haven, Connecticut.
Fig. 2 is an enlarged segment of the lowest pinna, showing
the venation, and the dorsal position of the sori. Fig. 3 is a sorus, and
Fig. 4, a spore.
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