Pteris Aquilina, Linn. 
Eupteris Aquilina, Newman. 
COMMON BRAKES. 
Boot — Radicles brown and fibrous ; rhizome deep in the 
earth, thick, long, and creeping, succulent, and of a dark 
brown colour. 
Frond — Triangular, hipinnate, from a few inches to ten 
feet high, according to locality. 
Stipes — Erect and strong, half the length of the frond, 
pilose. 
Pinnae — Linear-lanceolate, pinnate, acute at the apex. 
Pinnules — Ovate or oblong, pinnatifid, lobes rounded. 
Venation — Lateral veins alternate, twice forked, ex- 
tending to the margin, joined to a longitudinal vein running 
along the margin ; this marginal vein forms the receptacle 
for the indusium. 
Fructification — Thecae in continuous lines, marginal, 
numerous, globose, and encircled with a beaded elastic ring. 
Sporules numerous, warted, ovate. 
Habitat — Common, except on swamps. 
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