658 
CRYPTOGAMIA SCHISMATOPTERIDES. OsmiMcfa, 
spectabilis . 
O. basilaris. Sprengel. aul.3. p. l6o. 
Icon. Schlmhr Jilic. t. 144. 
In low and swampy grounds : Canada to Virginia, and in 
the western territories. 1/. June, July. v.v. This 
singular fern is about two feet high. 
4. O. frondibus bipinnatis, pinnulis oblongis obtusiusculis 
argute serrulatis basi truncatis inaequalibus, omnibus 
alternis, panicula bipinnata fructificante in apice fron- 
dis. — IVilld. sp. pl. 5. p . 98 . 
O. regalis (3. Sp. pl. 1521. Midi. Jl. amer. 2. p. 273. 
Icon. Pluk. aim. t . 184. f. 4. 
In mountain swamps: Canada to Carolina. 1/. JulyJB 
v. v. A very elegant species. 
aureum , 
IV. FILICES. 
721 . ACROSTICHUM. Gen. pi 1625. 
1. A. frondibus pinnatis, pinnis alternis oblongo-lanceola- 
tis integerrimis, basi cuneatis aequalibus, omnibus 
acuminatis, superioribus fructificantibus. IVilld. sp. 
pl. 5. p. 11 6. 
Icon. Schkuhr Jilic. t. 1. Petiv.Jil. t. 8. f. 5. Pium . 
amer. t. J. Pluk. aim. t. 288. f. 2. 
In deep swamps near the sea-coast : Florida. 1/ . July. 
v. v. This is the largest of the North American ferns, 
the leaves being sometimes above five feet long. 
vulgare. 
722 . POLYPODIUM. Swartz . sy nop. Jilic. 3 . 
1. P. frondibus profunde pinnatifidis, laciniis lineari-lan- 
ceolatis obtusis crenulatis approximatis, superioribus 
sensim minoribus, soris solitariis, caudice paleaceo. 
IVilld. sp. pl. 5. p. 172 . 
Icon. Schkuhr Jilic. t. 11. Plum.Jil. t. d.f. 2 . 
On rocks and old rotten trees : Canada to Carolina. 1/ . 
July. v. v. 
virginianum . 
2. P, frondibus profunde pinnatifidis, laciniis lanceolatis 
obtusis integerrimis approximatis, superioribus sensim 
minoribus, soris solitariis, caudice nudo. Willd. sp. 
pl. 5. p. 174. 
Icon. Petiv. Jilic. t. 7 . f. 9 . Pium. amer. t. 36. Jilic. 
f 77 . 
