U 4 F E R N S OF NORTH AM E R IC A .
. . V ' k i .
spinulosttm and to A . cristatum, but, as its claims to specific
are considered good by several able botanists, it will be
separately figured and described in the following pages of
this work.
Plate L X V I I I .— Aspidium spimdosum var. intermedium, from a
plant collected near Boston by Mr. Faxon. The drawing does not
show the peculiarity above indicated of having the inferior basal pinnules
a trifle smaller than the next ones. Fig. 2 is an enlarged pinnule.
Fig. 3, the indusium. Fig. 4, the smooth indusium of var. vidgare.
Fig . 5, a spore, less plainly muriculate than I have usually seen. Fig.
6, a section of the stalk.
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