Key to the Ferns
|This is the genus Cystopteris, several species
of which are very difficult to identify with confidence. The following
characters are closely modeled on the Flora
of North America, Vol 2.
|60. Blade broadest at or near the base; rachis,
and midribs of the ultimate segments bearing some glandular hairs; bulblets
sometimes present on the rachis.
|60. Blade broadest near the middle; rachis, and midribs of the ultimate segments without glandular hairs; bulblets not present. This group can also be difficult to distinguish, especially for dried specimens for which the stem characters are not known.||63|
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