666 
CRYPTOGAMIA FILICES. 
726. STRUTHIOPTERIS. Willd.inmag.ges.nat fr.z. 
lerl. 1809^ p. 160. 
pefisylvanica. 1. S. frondibus sterilibus bipinnatifidis, laciniis integerri- 
mis obtusis, infima elongata acuta. JFilld. sp. pl. 5. 
p, 289. 
Onoclea nodulosa. Schkuhr filic. p. 96. 1. 104. 
In Pensylvania. Muhlenberg. %. +. Resembles 
S. germanica. 
727. ASPLENIUM. Swartz, synop. filic, p. 4:. 
rhizophyllum. 
angustifoli- 
urn. 
eheneurn. 
melanocau- 
lon. 
1. A. frondibus lanceolatis stipitatis subcrenatis, basi auri- 
culatO'Cordatis, apice longissimo lineari-fiiiforme radi- 
cante. Willd. sp. pl. 5 p. 305. 
Icon. Pluk. aim. t. 105. f. 3. Petiv. gazoph, t. 105. jT. 7. 
Moris, hist. 3. s. 14. t.5.fi. 14. 
On wet shady rocks: Canada to Carolina. 1/. July. 
V. V. 1 his fern is highly ornamental to rock-works, 
and very singular in its striking root at the elongated 
points of the leaves. 
2. A. frondibus pinnatis, pinnis alternis, superioribus sub- 
oppositis, lineari-lanceolatis subrepandis, basi superiore 
truncatis, inferiore leviter rotundatis. IV illd. sp. pl.5. 
p. 313. 
A. pycnocarpon. Sprengel. anleit. 3. p. 112, 
Icon. Schkuhr filic. t. 6j. ^ 6g. Moris, hist. 3. s. 14. 
t. 2. f. 25. 
In shady woods, on the banks of rivers : western parts 
of New York and Pensylvania. 14.. July. v. v. A 
very elegant fern about a foot high. 
3. A. frondibus pinnatis, pinnis sessilibus lanceolatis serru- 
latisbasi cordatis, sursum auriculatis. Willd. sp.pl, 5. 
p. 329. 
A. polypodioides. Swartz, synop. filic. 79- ^ 2/2. 
A. trichomanoides. Mich.Ji. amer. 2. p. 265. 
Acrostichum platyneuron. Sp. pl. 1527. exci, synon. 
Icon. Schkuhr filic. t. 73. Pluk. aim. t. 2Sy. fi. 2. et 
t. 8g.fi 8. Moris, hist. 3. s. 14. t. 2. fi. 12. 
In clefts of rocks : New England to Carolina. 1/ . July. 
V. V. A small species. 
4. A. frondibus pinnatis, pinnis subrotundis obtusis crena- 
tis basi cuneatis, stipite discolore. Willd. enum. 1072. 
Willd. sp.pl. 5. p. 332. 
