A CHECKLIST OF THE NORTH AMERICAN 

 FERNWORTS. 



(Continued) 

 POLYPODIUM. L. 



167. Polypodium angustifolium Sw. Rare; on the 



trunks of trees. Southern Florida; also in the 

 American Tropics. The form ensifolium 

 (Willd). (Polypodium ensifolium Willd) is a 

 narrower form reported with the type. — 

 Campyloneuron angustifolium (Sw.) 



168. Polypodium aureum L. Golden Polypody, 



Hare's Foot Fern. Common; on palmettoes, 

 occasionally on the ground. Southern Florida ; 

 also in the American Tropics. — Phleb odium 

 aureum (L.) 



169. Polypodium Calif ornicum Kaulf. Common ; in 



the crevices of rocks. California ; also in Mex- 

 ico and Central America. The form interme- 

 dia H. & A. is found with the type and ap- 

 proches P. vulgar e in appearance. 



170. Polypodium costatum Kunze. Rare ; in rocky 



shades. Southern Florida ; also in Jamaica and 

 Central America. — Campyloneuron costatum 

 (Kuntze.) 



171. Polypodium falcatum Kellogg. Liquorice 



Fern. Common ; on old logs and the base of 

 trees, occasionally in soil in damp, shady places. 

 California to Alaska. — P. Glycerrhiza D, C. 

 Eaton; P. occidcntale (Hook.) 



172. Polypodium hesperium Maxon. Not uncom- 



mon ; in rocky shades. Arizona to Montana 

 and British Columbia. 



173. Polypodium incanum Sw. Gray Polypody; 



