V] 



FERNS 



81 



Gleichenia occurs abundantly in the warmer regions 

 of both the Old and New World. The fronds may 

 usually be recognised by their habit of growth 

 (Fig. 10) ; in several species the main axis is 



Fig. 10. Gleichenia dicarpa Br. {h nat. size.) 



repeatedly forked and a small bud between the 



divergent branches of the forks forms a characteristic 



feature. The leaflets are either long and narrow 



s 6 



