140 ADIANTUM 



VENUS'-HAIR FERN: 



Adidntum Capillus- Veneris. 



Fronds 4 to 20 inches liigli^ with a continuous 

 main rachis^ twice or three times pinnate at the 

 base, simply pinnate above; pinnules broad or nar- 

 row wedge-shaped, their outer edges deeply toothed 

 or notched; veins springing from the base like the 

 ribs of a fan. 



Fruit dots marginal; indusium formed by the 

 reflexed edges of the pinnules. 



Found in moist, rocky places from southeastern 

 Pennsylvania to Missouri and Florida, also in Da- 

 kota and southwestward. 



NOTES. 



