F E R N S ;
B R IT I SH AND EXOTIC.
A S P L E N IEÆ . J. S mith.
T h e Ferns included under the family Asplenieoe as so well
marked, that it would not be easy to mistake the great majority
of them. They differ from the Pte rideæ in the position of the
sori, for in this tribe they are parallel with the midrib o r
margin of the frond, whilst in Asplenieoe they are oblique to
the midrib, or axis of venation.
The sori are elongated, venules free or anastomosing, sori
simple or binate, having a special lateral attached, linear, plane,
or vaulted indusium.
The Asplenieoe comprise the Scolopendrium, Diplazium, A s plénium,
Ceterach, Neottopteris, Antigramma, CallijHeris, and
one or two other small tribes.
VOL. V.
