668 
OKYPTOGAMIA FILICES. 
pedata. 
atropurpurea . 
venosa. 
punctata. 
gracilis . 
caudata . 
aquilina. 
729. PTERIS. Gen.pl. 1626. 
1. P. frondibus profundissime quinquelobo-palmatis, lobis 
pinnatifidis, laciniis lineari-lanceolatis acutis, infima 
lobi intermedii utrinque pinnatifida, lobo intermedio 
basi longissime cuneato, sinubus acutis. — IVilld. sp. 
pl. 5. p. 358. 
Icon. Schkuhr Jilic. t. 100. Pium. amer. t. 34.JU. t. 152. 
Petiv.Jilic. t. 8 .f. 12. Pluk. alni . t.286.f.5. 
On rocks : Virginia. 11 . July. v. s. About six inches 
high. 
2. P, frondibus pinnatis, pinnis inferioribus ternatis pinna» 
tisve laneeolatis obtusis, basi obtuse truncatis subcor- 
datis ve. Willd . sp. pl\ 5. p. 3 75. 
a. P. pinnulis subtus venosis, stipite angulato. 
Icon. Schkuhr Jilic t. 101. Pluk. mant. t.34g.f 1. 
/3. P. pinnulis subtus punctatis, stipite terete. 
P. spiculata. Schkuhr Jilic . t. 100. 
In clefts of rocks: Pensylvania to Carolina. 1/. July. 
v . v. About a span high ; grayish -green with dark 
purple stems. 
3. P. frondibus pinnatis, pinnis laneeolatis obtusis alternis 
sessilibus, inferioribus pinnatifidis, fertilibus integerri- 
mis, sterilibus crenatis rotundato-obtusis. IVilld. sp. 
pl. 5. p. 376. 
On rocks in Canada. Michaux. 11 . July. v. s. Not 
above four inches high j stems yellowish-green, 
smooth and shining. 
4. P. fronde pinnato-tripartita, ramis sterilibus bipinnatis, 
pinnulis linearibus elongatis obtusis integerrimis, 
interioribus bipinnatifidis, fructificantibus pinnatis, 
pinnis remotiusculis inferioribus basi pinnatifido-den- 
tatis. IVilld. sp. pl. 5. p . 401. 
Icon. Jacq. ic. rar. 3. t. 645. Pium. amer. t. 22. Jilic . 
t. 29. 
In shady stony woods, on the side of rivulets : Pensyl- 
vania to Carolina. 2/ . Aug. v. v. 
5. P. fronde pinnato-tripartita, ramis sterilibus bipinnatis, 
pinnis lineari-lanceolatis obtusis pinnatifido-dentatis, 
fructificantibus pinnatis, pinnulis pinnatifidis, laciniis 
acutiusculis, omnibus ciliatis. — Willd. sp. pl. 5. 
p. 402. 
Icon. Schkuhr Jilic. t. Q5. 96. b. Pium, jilic. t. A .f. 1. 
In dry barren woods : Canada to Florida. }/ . Aug. 
