ATIIYRIUM I'n,IX-F(EMINA. 



13 



m 



4 ii*^ "J- ^.' V ^-/iT mv^ ^^ '(pfV^ 





Fig. 287.— Shewing form of Frond. 288.— Pinna. 



RuTSONii, Monkma7i. (Figs, 287 and 288.) — Fronds broadly, 

 almost triangularly lanceolate, spreading. This is a remarkable 

 form. The lower pairs of pinna; are longest, and mostly or nearly 

 normal. In ascending order they become ramose or dichotomously 

 forked, frequently forming flabellate fan-like pinnae. Towards 

 the apex of each frond the pinn;e become cruciate, as in the 



