THE CLIFF BRAKES, 
HE bracken is now considered to 
be the sole representative of its 
genus in northeastern America. 
Time was, however, when other 
species were classed with it, but 
owing to some slight differences 
in the manner of fruiting, these: 
latter are now placed in the genus 
Pellea. Superficially examined, 
the fruiting seems to be identical, 
but there is this difference: in 
q Pteris the sporangia are borne on 
a continuous receptacle connect- 
ing the ends of the veins, on the 
margin of the pinnules; in Pellea 
the sporangia are borne in dot- 
like masses at the ends of free 
veins, inside the margins. 
The indusia are similar 
and when the spore-cases 
of Pellea are ripe, they 
frequently appear to form 
: _> a continuous line, 
Ble as in Preris. 
WINTER BRAKE, Pellea atropurpured. 
