Fig. 122. — A, B, Botrychiuin simplex (Hitch), natural size; C, B. ternatiim (Sw.), Xg; D, leaf 

 segment of i>. Iuna7-ia (Sw.) ; E, leaf segment of 5. Vifginianiiin (Sw.), natural size ; F, portion 

 of sterile leaf segment oi Hcbninthostacliys Zcylanica (Hk.) ; G, fragment of the sporangiophore 

 of the same enlarged. A, B, C after Luerssen ; D, F after Hooker. 



R 



