



VARIATION IN HARTS TONGUE FERN 



FIG. 22. Mutations of Hart's Tongue Fern ( Scofapendrium imlgare) After LOWE. 

 i. Typical ; 2, variety sagittato-cristatum ; 8, reniforme ; 4, cristatum ; 5, contractum ; 6, stansfieldii. 



[Facing />. 98 



