726. STRUTHIOPTERIS.

Willd. in mag. ges. nat. fr. z.

berl. 1809. p. 160.

pensylvanica. 1. S. frondibus sterilibus bipinnatifidis, laciniis integerrimis obtusis, infima elongata acuta. p. 289.

Willd. sp. pl. 5.

Onoclea nodulosa. Schkuhr filic. p. 96. t. 104.

In Pensylvania. Muhlenberg. 4. +. Resembles
S. germanica.

727. ASPLENIUM. Swartz. synop. filic. p. 4.

rhizophyllum. 1. A. frondibus lanceolatis stipitatis subcrenatis, basi auriculato-cordatis, apice longissimo lineari-filiforme radicante. Willd. sp. pl. 5. p. 305.

angustifoli

um.

eleneum.

melanocaulon.

Icon. Pluk. alm. t. 105. f. 3. Petiv. gazoph. t. 105. ƒ.7.
Moris. hist. 3. s. 14. t. 5. f. 14.

On wet shady rocks: Canada to Carolina. 2. July.
v. v. This 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 suboppositis, lineari-lanceolatis subrepandis, basi superiore truncatis, inferiore leviter rotundatis. Willd. sp. pl. 5. p. 313.

A. pycnocarpon. Sprengel. anleit. 3. p. 112.

Icon. Schkuhr filic. t. 67. & 69. Moris. hist. 3. s. 14. t. 2. f. 25.

In shady woods, on the banks of rivers: western parts of New York and Pensylvania. 4. July. v. v. A very elegant fern about a foot high.

3. A. frondibus pinnatis, pinnis sessilibus lanceolatis serru-
latis basi cordatis, sursum auriculatis. Willd. sp. pl. 5.
p. 329.

A. polypodioides. Swartz. synop. filic. 79. & 272.
A. trichomanoides. Mich. fl. amer. 2. p. 265.
Acrostichum platyneuron. Sp. pl. 1527. excl. synon.
Icon. Schkuhr filic. t. 73. Pluk. alm. t. 287. f. 2. et
t. 89. f. 8. Moris. hist. 3. s. 14. t. 2. f. 12.

In clefts of rocks: New England to Carolina. . July.
υ. υ. A small species.

4. A. frondibus pinnatis, pinnis subrotundis obtusis crenatis basi cuneatis, stipite discolore. Willd. enum. 1072. Willd. sp. pl. 5. p. 332.

A. trichomanes. Mich. fl. amer. 2. p. 264.

On rocks: Canada to Carolina. 2. July. y. v. Very small stem polished, black.

des.

5. A. frondibus pinnatis, pinnis sessilibus lanceolatis acu- thelypterioi-
minatis profunde pinnatifidis, laciniis oblongis obtusis
obtuse-serratis, soris parallelis demum confluentibus.
-Willd. sp. pl. 5. p. 336.

A. acrostichoides. Swartz. synop. filic. 82. & 275.
Icon. Schkuhr filic. t. 76. b.

In shady woods on the sides of rivulets: Pensylvania to
Carolina. 4. July. v. v. Resembles Aspidium
Thelypteris very much; it is from eighteen inches to
two feet high.

ria.

6. A. frondibus basi bipinnatis, apice simpliciter pinnatis, Ruta murapinnulis rhombeo-oblongis obtusis, apice obtuse denticulatis. Willd. sp. pl. 5. p. 341.

Icon. Schkuhr filic. t. 80. b. Fl. dan. 190.

In clefts of rocks: New York to Carolina.

4. July.

v. v. The American plant is very small, scarcely ever
exceeding an inch or two in height.

7. A. frondibus glabris bipinnatis, pinnulis lanceolatis pin-
natifidis, laciniis tri- vel bidentatis.-Willd. sp. pl. 5.
p. 342.

A. Adiantum nigrum. Mich. fl. amer. 2. p. 265.

In clefts of rocks, on the mountains of Virginia and Carolina. . July. v. v. A much smaller plant than A. nigrum, to which it has some resemblance.

728. SCOLOPENDRIUM. Smith act. taur. 5. p. 410. t. 9. f. 2.

montanum.

1. S. frondibus lato-lanceolatis basi cordatis, stipite paleaceo. officinarum. Willd. sp. pl. 5. p. 348.

Asplenium Scolopendrium. Sp. pl. 1537.

Icon. Schkuhr filic. t. 83. Pluk, phytogr. t. 248. f. 1.
In shady woods, among loose rocks in the western parts
New York, near Onondago, on the plantations of
J. Geddis, Esq. 4. July. v. v. This species I have
seen in no other place but that here mentioned, nei-
ther have I had any information of its having been
found in any other part of North America.

pedata.

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.-Willd. sp.
pl. 5. p. 358.

Icon. Schkuhr filic. t. 100. Plum. amer. t. 34. fil. t. 152.
Petiv. filic. t. 8. f. 12.
Pluk. alm. t. 286. f. 5.

On rocks Virginia. . July. v. s.

high.

:

About six inches

atropurpurea. 2. P. frondibus pinnatis, pinnis inferioribus ternatis pinnatisve lanceolatis obtusis, basi obtuse truncatis subcordatisve. Willd. sp. pl. 5. p. 375.

venosa.

punctata.

gracilis.

caudata.

aquilina.

a. P. pinnulis subtus venosis, stipite angulato.

Icon. Schkuhr filic. t. 101. Pluk. mant. 1. 349. f. 1. B. P. pinnulis subtus punctatis, stipite terete.

P. spiculata. Schhuhr filic. t. 100.

. July.

In clefts of rocks: Pensylvania to Carolina.
V. V. About a span high; 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. 4. July. v. s. Not above four inches high; 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-dentatis.- Willd. sp. pl. 5. p. 401.

Icon. Jacq. ic. rar. 3. t. 645. Plum. amer. t. 22. filic. t. 29.

In shady stony woods, on the side of rivulets: Pensylvania to Carolina. . 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 filic. t. 95. 96. b. Plum. filic. t. A. f. 1.
In dry barren woods: Canada to Florida. 4. Aug.

V. V. It deviates in some respects from the European
plant, but is not sufficiently distinct to form a separate
species, as it is well known how much the European
species itself assumes different appearances in differ-
ent soils.

730. VITTARIA.

Smith act. taur. 5. p. 413. t. 9. f. 5.

1. V. frondibus linearibus longissimis pendulis, soris soli-
tariis intra marginalibus. Willd. sp. pl. 5. p. 404.
V. angustifrons. Mich. fl. amer. 2. p. 261.

Iteris lineata. Sp. pl. 1530.

Icon. Schkuhr filic. t. 101. b. Plum. amer. t. 41. filic.
t. 143. Petiv. filic. t. 14. f. 3.

On the banks of the rivulet Aisa-hatcha, Florida. Mi-
The leaves resemble those of a

chaux. 4.+.

common grass.

731. BLECHNUM. Gen. pl. 1627.

1. B. frondibus sterilibus pinnatifidis, laciniis lanceolatis
obtusiusculis parallelis, fructiferis pinnatis, pinnis li-
nearibus acuminatis. Willd. sp. pl. 5. p. 408.

B. Spicant. Roth. fl. germ. 3. p. 44.
Onoclea Spicant. Hoffm.fl. germ. 2. p. 11.
Osmunda Spicant. Sp. pl. 1522.

Icon. Schkuhr filic. t. 110. Fl. dan. 99. Bolt. filic. t. 6.
Moris. hist. 3. s. 14. t. 2. f. 23.

On the north-west coast. M. Lewis. 4. Aug. v. s.

in Herb. Lewis.

lineata.

boreale.

2. B. frondibus pinnatis, pinnis lanceolatis utrinque atte- serrulatum. nuatis basi decurrentibus argute serratis.

pl. 5. p. 411.

Willd. sp,

On the banks of the rivulet Aisa-hatcha, Florida. Michaux. 2. +.

732. WOODWARDIA. Smith act. taur. 5. p. 411.

t. 9. f. 5.

1. W. frondibus sterilibus pinnatifidis, laciniis lanceolatis repandis tenuissime serrulatis, fructiferis pinnatis, pinnis linearibus integerrimis acutis. Willd. sp. pl. 5. p. 416.

W. angustifolia. Smith act. taur. 5. p. 411.

W. floridana. Schkuhr filic. p. 103. t. 111.
Onoclea nodulosa. Mich. fl. amer. 2. p. 272. Swartz.
synop. filic. 111.

onocleoides

virginica.

thelypterioi. des.

pedatum.

vestila.

Acrostichum areolatum. Sp. pl. 1526.
Osmunda caroliniana. Walt. fl. car. 257.

Icon. Schkuhr l. c. Pluk. phytogr. t. 399. f. 1. Moris.
hist. 3. s. 14. t. 2. f. 24.

In cedar and cypress-swamps: New Jersey to Florida. 2. Aug. v. v. About a foot high.

2. W. frondibus glaberrimis pinnatis, pinnis sessilibus lan-
ceolatis pinnatifidis, laciniis oblongis obtusis crenulatis,
fructiferis elongatis, stipite glabro tereti.-Willd. sp.
pl. 5. p. 418.

W. Banisteriana. Mich. fl. amer. 2. p. 263.
Blechnum virginicum. Mant. 307.

Blechnum carolinianum. Walt. fl. car. 257.

Icon. Pluk. alm. t. 179. f. 2.

In swamps and shady woods: Virginia and Carolina. .
July. v. v. Above a foot high.

3. W. frondibus pinnatis, pinnis sessilibus basi villosis li-
neari-lanceolatis pinnatifidis, laciniis sterilium oblongis
obtusiusculis, fertilium abbreviato-triangularibus acu-
tis, omnibus integerrimis, stipite pubescente angulato.
In sandy swamps: South Carolina, near Charlestown.
2. July. v. v. Resembles the preceding, but is not

half the size.

733. ADIANTUM. Gen. pl. 1633.

1. A. fronde pedata, ramis pinnatis, pinnis dimidiatis ob-
longis lunatis margine superiore incisis, laciniis sterili-
bus dentatis, fertilibus integerrimis, soris linearibus,
stipite glabro. Willd. sp. pl. 5. p. 438.

Icon. Schkuhr filic. t. 115. Pluk. alm. t. 124. f. 2.
Corn. canad. t. 6.

In shady woods: Canada to Virginia. 2. July. v. v.
A very elegant fern.

734. CHEILANTHES.

Swartz. synop. filic. p. 5.

1. C. frondibus bipinnatis utrinque hirtis, pinnulis pinnati-
fidis, laciniis oblongis obtusis integerrimis, stipite ra-
chibusque hirtis. Willd. sp. pl. 5. p. 458.
Adiantum vestitum. Sprengel, anleit. 3, p. 122.
Aspidium lanosum. Swartz. synop. filic. p. 58.
Nephrodium lanosum. Mich. fl. amer. 2. p. 270.
Icon. Schkuhr filic. t. 124.