Fig. IV. Osmfinda ClaytoniJlna, with five dissections ; 2, a !=egment or lobe, showing 

 the forked venation ; 3, chistcrs of spore-cases (enlarged) ; 4, one of the spore-cases 

 (capsules) still further magnified ; 5, young frond, showing its mode of vernation. 



NoTK.— Specific names are generally adjective.^, and should never begin witli a 

 cai)ital letter, except (1) when the iiauie is derived from a person or a CDuntry, as 

 O. Claytoniilna, or Erythrouium Americ^uum ; and (,2) when it is a uaun, as Dode- 

 catheon Mcadia. 

 2 



