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Ill Pteris Crética two or three pairs of pinnæ are sometimes
bi-partite or tri-partite, and rarely the inferior segment
of the lowest pinna is again compound; but none of these
forms have been observed in Florida specimens.
Plate LXIV. — « » '¿ J Crética, from one of Capt. Smith’s Florida
plants. Fig. 2 IS a portion of a pinna magnified eight diameters, and
showing the venation, indusium, sporangia, etc. Fig, 3 is a spore.
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