THE GENERA AND SPECIES OF CULTIVATED FERNS. Kj 
glabrous, two to three feet high, bright green, bipinnate below, pinnate above ; segments of the sterile frond 
linear-acuminate, decurrent at the inferior base, the margin serrate ; fertile segments linear, narrow, often ten 
inches long, serrate at the apex, and decurrent at the inferior base. Fronds lateral or terminal, adherent to a 
short creeping rhizome. 
5. P. felosma, J. Smith. — A large coarse-growing evergreen stove Fern, from Jamaica. Fronds glabrous, 
triangularly elongate, three to four feet long, dull green, pinnate ; pinna; linear-lanceolate, deeply pinnatihd, 
petiolulate, apex entire and caudate ; the lower pair bipartite ; segments linear, entire, obtuse, slightly falcate ; 
costa spinulose on the upper side. Stipes scaly near the base, half the length of the frond, terminal, adherent to 
a fasciculate erect rhizome. This species is not readily distinguished from the following, when both are dry. 
6. P. sulcata, Hort. Berolensis. — An evergreen stove species, from Jamaica. Fronds glabrous, triangularly 
elongate, three feet long, deep green, pinnate ; pinna; linear-lanceolate, deeply pinnatifid, petiolulate, apex entire 
and caudate ; the lower pair bipartite ; segments linear, entire, obtuse, subfalcate ; costa spinulose on the 
upper side. Stipes scaly near the base, half the length of the frond, terminal, adherent to a fasiculate erect 
rhizome. This species closely resembles the preceding, but is always of a smaller size, and destitute of the 
unpleasant odour so prevalent in that. 
7. P. Kinr/iana, Endlicher. — An ornamental evergreen greenhouse species, from Norfolk Island. Fronds 
glabrous, three feet long, sub-bipinnate, yellowish green ; pinnce linear lanceolate, drooping ; lower pair bipartite 
and petiolulate ; segments linear-acuminate, repand, margin serrate ; costa spinulose on the upper side. Stipes 
green, scaly near the base ; lateral or terminal, adherent to a short creeping rhizome. 
8. P. crenata, Swartz (P. chinensis, Hort. Angl). — An evergreen stove Fern, from the East Indies. Fronds 
glabrous, one to one and a half foot high, bipinnate especially below, dull green ; pinnules of the sterile frond 
oblong-ovate, decurrent at the inferior base, crenato-serrate at the margin ; fertile frond erect ; pinnules linear- 
acuminate, narrow, sub-petiolate, and decurrent at the inferior base. Fronds lateral, adherent to a short creeping 
rhizome. 
9. P. lata, Link. — An elegant evergreen stove species, from Brazil. Fronds glabrous, deltoid, three-branched, 
two and a half to three feet high, bright green ; branches pinnate, somewhat drooping ; pinna; linear-lanceolate, 
deeply pinnatifid, petiolulate or decurrent at the inferior base, apex entire and caudate ; segments linear-acumi- 
nate, repand, spmuloso-serrate at the apex ; costa spinulose on the upper side. Fronds lateral or terminal, adhe- 
rent to a creeping rhizome. 
10. P. hirsuta, J. Smith. — A fragile membranaceous evergreen stove Fern, from Jamaica. Fronds triangu- 
larly-elongate, bipinnate, four to six feet long, light green, and hairy throughout ; pinna; linear-lanceolate, 
somewhat drooping ; rachis winged ; pinnules linear oblong acuminate, pinnatifid ; segments oblong obtuse, 
slightly falcate, and rounded at the apex. Sori linear, continuous, intra-marginal. Indusium sinuose, slightly 
fringed. Stipes very stout, lateral, adherent to a thick creeping rhizome. 
1 1 . P. hcterophylla, Linnams. — An elegant evergreen stove Fern, from Jamaica. Fronds deltoid, glabrous, 
one foot long, yellowish green, bi-tripinnate ; pinnules of the sterile frond ovate, obtuse, attenuated at the base, 
deeply serrate at the margin ; fertile pinnules oblong-obtuse, and attenuated at the base. Fronds adherent to a 
somewhat tufted rhizome. 
12. P. arguta, Vahl. — A very graceful evergreen greenhouse species, from Madeira, the Canaries, and St. 
Helena. Fronds glabrous, spreading, somewhat deltoid ; chartaceous, pale green, three to five feet long, bi-tri- 
pinnate ; pinnules linear-acuminate, segments linear-oblong, obtuse, margin dentate. Stipes half the length of 
the frond, and, as well as the rachis, of a shining brown, especially when mature ; terminal, adherent to a some- 
what erect rhizome. 
13. P. tremula, R. Brown (P. chrysocarpa, Link). — An ornamental evergreen greenhouse Fern, native of 
New South Wales and New Zealand. Fronds glabrous, slender, deltoid, three feet long, bright green, tri-quadri- 
pinnate ; pinnules linear, caudate at the apex ; segments oblong-linear, narrow, rather blunt at the apex, 
crenately toothed at the margin. Stipes half the length of the frond ; terminal, adherent to a somewhat creeping 
rhizome. 
14. P. aquilina, Linneeus. — A tall coarse-growing deciduous hardy Fern, indigenous to Britain, and exten. 
sively distributed throughout Em-ope, Asia, and North America. Fronds somewhat three-branched, pubescent, 
especially beneath, bi-tripinnate, from four to eight feet high, pale green ; pinnules linear-lanceolate, superior 
undivided, inferior pinnatifid ; segments oblong-obtuse, and slightly concave. Sori continuous round nearly 
every sinuosity of the pinna;. Indusium divided at the free margin into capillary articulated segments. Fronds 
lateral, adherent to a creeping elongated subterraneous rhizome, often penetrating to the depth of several feet. 
There are two forms of this species met with in a wild state in this country — one with the ultimate pinnules 
pinnatifid, the other with all the pinnules entire. 
— P. caudata, Linnoeus. — This name is retained in catalogues as that of a distinct species, from North America ; 
yet, if the plant is examined in a living state, it is found not to be specifically different from ova' indigenous 
P. aquilina, and fronds gathered from our native species under many circumstances cannot be distinguished from 
the North American and other forms. Through the kindness of E. Howard, Esq., F.L.S., we have selected from 
his extensive herbarium the various names applied to this plant by authors, and the different localities from 
whence it has been obtained, some having been gathered by himself in Jamaica and Great Britain, and others by 
