Mr. Baker has referred this plant to the genus Pellæa,
principally on account of its continuous involucres, but its
near relationship to C. microphylla seems to demand that
both should rest in one genus. A frond sent by Professor
Smith from Alabama is so imperfectly fruited that the involucres
are by no means continuous. A specimen from
Tennessee has the two lowest pinnæ half as large as the
rest of the frond — no doubt an accidental ‘ sport.’
Plate LVII., Fig. 7 -9 .— Cheilanthes Alabamensis. The drawing
represents a plant collected by Professor B r a d l e y on the rocky banks
of the Holston River, near Knoxville, Tennessee. The details are a
pinnule, enlarged, and a spore.
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