Trans. Bot.Soc.Fdm^, Vol.XV//,PL V/I. 

 9 



F^<^.8 



Fi^ 



FiQ. P. 



^^a\e split off ;, 



i/Uy 



:->*-T-. 



.x. 



/- 



oL 



r Huft, LitW Edin'' 



