CRYPTOGAMIA FILICES, PolypodiunO. 
On the trunks of trees : Virginia ? 1/ . 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. vulgare 
under the name of P. virginicum. 
3. P. frondibus profunde pinnatifidis, laciniis alternis iinea- 
ribus integerrimis obtusis, superioribus sensim mino- 
ribus, sublus stipiteque squamulosis, apice fructiferis, 
soris solitariis. WiUd. sp. pi. 5. p. \y 4. 
P. ceteraecinum. Mich.Ji. amer. 2. p. 27 1. 
Acrostichum polypodioides. Sp. pi. 1525. 
Icon. Sckkukr Jilic. t.W.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. 
4. P. frondibus bipinnatiddis glabriusculis, pinnis duabus hexagcnopie* 
infimis deflexis, laciniis lanceolatis obtusis ciliatis, pin- rum, 
narum inferiorum inciso-crenatis superiorum integerri- 
mis, infimis adnato-decurrentibus, soris minutis soli- 
tariis. Willd. sp. pi. 5. p. 200. 
Icon. Pluk. aim. t. 284. f. 2. bona. Schkuhr Jilic. 
t. 20 . 1. 
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. 
5. P. frondibus bipinnatifidis ciliatis, pinnis oppositis con- connectils, 
tiguis adnatis, pinnulis subellipticis, stipite paleaceo, 
soris minutis. Willd. 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 calcar eum. 
obtusiusculis subintegerrimis, soris marginalibus con- 
fluentibus. Willd. sp. pi. 5. p.2\0. 
P. Dryopteris. Bolton Jilic. 53. t. 1. 
Nephrodium Dryopteris. Mich.Ji. amer. 2. p. 270 . 
In shady beech-woods: Canada to Pensylvania. %. 
July. V. V. This is a very rare fern in Pensylvania. 
I only found it on the western mountains in deep 
shady beech forests. 
653 
incanum. 
