FIG. IV. Osmfinda Claytoniana, with five dissections ; 2, a segment or lobe, showing 

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

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



NOTE. Specific names are generally adjectives, and should never begin with a 

 capital letter, except (1) when the name is derived from a person or a country, as 

 O. Claytoniana, or Erythr6nium Americanum ; and (2) when it is a noun, as Dode- 

 catheon Meadia. 

 2 



