Tab. CCXYI.

Aspidium (Polystichtjm) mccronatdm, Sio. —p. 9.

Fertile frond; nat. size. Fig. 1. Fertile pinna. Fig. 2. Por-tion of a pinna, with an involucre, and showing the vena-tion. Fig. 3. Scales from the stipes j magnified.