CRYPTOGAMIA FILICES. Polypodium. 



65Q 



On the trunks of trees : Virginia ? H . July. + . 

 Willdenow doubts whether this is really a native of 

 Virginia, and I believe with much propriety, as I like- 

 wise never have seen any other species than P. vufgare 

 under the name of P. virginkum. 

 . P. frondibus profunde pinnalitidis, laciniis alternis linea- incanum. 



ribus integerrimis obtusis, superioribus sensim niino- 

 ribus, sublus stipiteque squamulosis, apice frucliteris, 

 soris solitariis. iVilLd. sp. pL 5. p. 17-t- 

 P. ceteraccinum. Micli.Ji. umer. 2. p. 27 1. 

 Acrostichum polypodioides. Sp. pi. 1523. 

 Icon. Schkuhrjilic. t.ll. b. 



On rocks and trunks of old trees : Virginia to Florida, 

 Kentucky and Tennassee ; on the rocks of the Natu- 

 ral bridge, Virginia, and on the stems of trees in the 

 Dismal-swamp. Ph. July. v. v. 

 I. P. frondibus bipinnatifidis glabriusculis, pinnis duabus hexagcnnpte' 

 infimis deflexis, laciniis lanceolatis obtusis ciliatis, pin- rum. 

 narum inferiorum inciso-crenatis superiorum integerri- 

 mis, intimis adnato-decurrentibus, soris minutis soli- 

 tariis. JVilld. sp. pi. 0. p. 200. 

 Icon. Pluh aim. t. 234. f. 2. bona. Schkuhr filic. 



t. 20. b. 

 In shady moist woods on fertile soil : New York to Ca- 

 rolina, 1/ . July. V. V. The whole leaf forms a 

 triangle in its circumference ; the stem is smooth. 

 3. P. frondibus bipinnatifidis ciliatis, pinnis oppositis con- conneciile. 

 tiguis adnatis, pinnulis subellipticis, stipite paleaceo, 

 soris minutis. WlUd. sp. pi. 5. p. 200. 

 In shady woods : Canada to New York. 11 . July. v. v. 

 Resembles the preceding. 

 6. P. frondibus ternatis bipinnatis rectis rigidulis, laciniis calcpreum. 

 obtusiusculis subintegerrimis, soris marginalibus con- 

 fluentibus. TVilld. sp. pi. 5. p. 210. 

 P. Dr}opteris. BoitonJUic. .53. t. 1. 

 Nephrodium Dryopteris. Mkh.Ji. amer. 2. p. 2/0. 

 In shady beech-woods : Canada to Pensylvania. 1/ . 

 July. V. V. This is a very rare fern in Pensylvania. 

 I only fo^^nd it on the western mountains in deep 

 shady beech forests. 



