128 A O R O S T IC nUM N IC O T IA NÆ FO L IT JM .
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Sterile fro n J glabrous, pinnate, and shining; the pinnæ
being oblong-acuminate, u ndulated, large, and somewhat membranous;
the basal ones petiolate, and roundish at the base,
the u p p e r pinnæ adnate-decurrent. F e rtile frond pinnate or
bipinnate below; the pinnæ oblong-ovate; the basal ones p e tiolate
and the u p p e r ones adnate.
Stipes covered with narrow scales, scaly near the base.
Fronds lateral, and adherent to a creeping rhizoma. Fertile
fronds erect in habit.
Sori amorphous.
A'eins pinnate; venules compoundly anastomosing.
L en g th of frond from twelve to th irty inches; colour bright
green.
F o r a frond my thanks are due to AI. Schott, Director of
the Imp e ria l Gardens of Schonbriinn, near Vienna.
I t is in the Catalogues of Alessrs. Sim, of Foot’s Cray; A.
Henderson, of Pine-apple Pla c e ; F . G. Henderson, of
AA’en tw o rth ; and Booth, of Hamburg.
The illustration is from AI. Schott’s frond.
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