Taij. \'. 



Af Gj.eichenia nervosa, Kaulf. — p. 12. 



Fig. 1. Fertile segment, underside; nat. size. Fig. 2 Portion 

 of the same ; magnified. Fig. 3, 4. Frond, nearly entire ; 

 7iat. size. 



B. Gleichenia Klotzschii, Hook. — p. 13. 



Fig. 1. Fertile segment, mider side ; magnified. Fig. 2. Por- 

 tion of the same; more magnijied. Fig. 3. Portion of a 

 frond ; nat. size. 



