668 
CRYPTOGAMIA FILICES. 
729. PTERIS* Gen. pi. I626. 
pedata. 
atropurpurea. 
venosa. 
punctata. 
gracilis. 
^audata. 
a 
quilina. 
1. P. frondibus profundissime quinquelobo-palmatis, lobis 
pinnatifidis, laciniis lineari-lanceolatis acutis, infima 
lobi intermedii utrinque pinnatificla, lobo intermedio 
basi longissime cuneato, sinubus acutis. — JVilld. sp. 
pl. 5. p. 358. 
Icon. Schkuhr JUic. 1. 100. Pium. amer. t. ZA.Jil. t. 152. 
Petiv.Jilic. t. 8.f. 12. Pluk. aim. 1.286. f. 5. 
On rocks : Virginia. "}/. July. v. s. About six inches 
high. 
2. P. frondibus pinnatis, pinnis inferioribus ternatis pinna- 
tisve lanceolatis obtusis, basi obtuse truncatis subcor- 
datisve. JVilld. sp. pl. 5. p. 375. 
a. P. pinnulis subtus venosis, stipite angulato. 
Icon. Schkuhr JUic. t. lOl. Pluk. mant, t.84Q.f. 1. 
P. pinnulis subtus punctatis, stipite terete. 
P. spiculata. Schkuhr JUic. t. 100. 
In clefts of rocks : Pensylvania to Carolina. V • July. 
V. V. About a span high j grayish-green with dark 
purple stems. 
3. P. frondibus pinnatis, pinnis lanceolatis obtusis alternis 
sessilibus, inferioribus pinnatifidis, fertilibus integerri- 
mis, sterilibus crenatis rotundato-obtusis. Willd. sp. 
pl. 5. p.376. 
On rocks in Canada. Michaux. %. July. v. s. Not 
above four inches high 5 stems yellowish-green, 
smooth and shining. 
4. P. fronde pinnato-tripartita, ramis sterilibus bipinnatis, 
pinnulis linearibus elongatis obtusis integerrimis, 
inferioribus bipinnatifidis, fructificantibus pinnatis, 
pinnis remotiusculis inferioribus basi pinnatifido-den- 
tatis. — Willd. sp. pl. 5. p. 401. 
Icon. Jacq. ic. rar. 3. t. 645. Pium, amer. t. 22. JUic. 
t. 29« 
In shady stony woods, on the side of rivulets : Pensyl- 
vania to Carolina, 'll ., Aug. v. v. 
5. P. fronde pinnato-tripartita, ramis sterilibus bipinnatis, 
pinnis linearUlanceolatis obtusis pinnatifido-dentatis, 
fructificantibus pinnatis, pinnulis pinnatifidis,, laciniis 
acutiusculis, omnibus ciliatis. — Willd. sp. pl. 5. 
p. 402. 
Icon. Schkuhr JUic, t. 95. 9^* h- Pium. JUic. t. A.f. 1. i 
In dry barren woods : Canada to Florida. 11 . Aug. 1 
