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MANUAL OF POISONOUS PLANTS 



are P. vulgare, and P. incanum, the P. vulgare being more common northward. 

 The P. aureuni found in Florida is a large fern. 



Polypodium vulgare. L. Common Polypody 



Creeping rootstocks covered with cinnamon-colored scales; stipes light 

 colored; fronds 4-10 inches high, simple and deeply pinnatifid, the divisions 

 linear oblong, obtuse or somewhat acute obscurely toothed; sori large. 



Distribution. Throughout North America, also Europe and Asia. 



Poisonous properties. Used in catarrh and asthma. Supposed by some 

 writers to be poisonous. 



Adiantum L. 



Sori marginal, borne on the under side of a transversely oblong, crescent- 

 shaped or roundish, margin of the frond; the sporangia attached to the tips 

 of the forking branched veins; stipe black, polished; leaves divided. About 80 

 species of wide distribution. The A. Capillus-Veneris in tropical and sub- 

 tropical regions. 



Adiantum pedatum. L. Maidenhair Fern 



Root-stock slender, chaffy; stipe black, shining, dichotomously forked at the 

 summit; pinnae arising from the upper sides of two branches of the stipe; 

 pinnules short-stalked, numerous. 



Fig. 121. Cultivated. Maiden hair fern (Adiantum). 



