-fU THE GENERA AND SPECIES OF CULTIVATED FERNS. 259 Uj- 
12. A Eendersoni, J. H. — A singular-looking evergreen Fern, the native country of which is unknown. 
Fronds glabrous, elongated, eight inches long, pinnate below, upper part pinnatifid, or irregularly laciniated, 
light green ; lower pinna; cordate-hastate, elongate, obtuse, deflexed ; middle pinna? adnate, decurrent, entire at 
the apex, and often forked, margin entire. Stipes about three inches long, and thinly covered with long brown 
narrow scales/ 
A specimen of this singular Fern was communicated to us by Mr. Henderson, Gardener at Wentworth House, 
Yorkshire. It was raised by him from spores some years ago, but from what country imported it is not known. It 
appears to maintain its singular character constant in cultivation ; but as nothing corresponding with it can be 
found in the extensive herbaria of Mr. J. Smith, or Mr. R. Heward, it has been suggested that it is not a distinct 
species, but a singular form degenerated from some other kind, however different it may now appear. 
13. A. angustifoUum, Michaux. — A rather rugose-looking deciduous hardy Fern, from North America. Fronds 
glabrous, slender, lanceolate, one and a half or two feet long, pinnate, pale green ; pinna? linear-lanceolate cordate 
at the base, sub- auriculate, petiolulate, undulate, membranous and slightly crenulate at the margin. Fronds 
terminal, adherent to a creeping rhizome. 
14. A. comptum, Kuuze (A. rhizophorum, Swartz). — An evergreen stove species, from Jamaica. Fronds 
glabrous, linear-lanceolate-elongate, pinnate, one and a half foot long, deep green ; pinna? oblong-obtuse, inferior 
ones petiolulate, blunt at the apex, upper base sub-auriculate, inferior obliquely truncate, bluntly serrate on the 
margin. Stipes and rachis ebeneous, void of pinna? on the apex, and rooting at the point. Fronds terminal, 
adherent to a fasciculate erect rhizome. 
15. A. salicifolium, Linna?us. — An evergreen stove Fem, from Jamaica. Fronds glabrous, pinnate, a foot or 
more long, light green ; pinna? oblong-petiolate, bluut at the apex, upper base somewhat round, and sub-auriculate, 
lower cuneate, crenate-dentate on the margin. Fronds terminal, adherent to a somewhat creeping rhizome. 
16. A. pitlehetttim, Eaddi (A. curvatum, Swartz). — A dwarf evergreen stove Fern, from Brazil and the West 
Indies. Fronds glabrous, slender, linear-lanceolate, ten inches long, dull green, pinnate ; pinna? oblong-obtuse, 
petiolate, sub -falcate, round at the apex, superior base auriculate, inferior truncate-dimidiate, inciso-serrate on the 
margin. Sori oblong linear, of a bright brown colour'. Fronds terminal, adherent to a fasciculate rhizome. 
17. A. denlatum, Linna?us. — A dwarf evergreen stove Fern, from the West Indies. Fronds glabrous, pinnate, 
six inches long, light green ; pinna? obovate-oblong, obtuse, cuneate at the base, and deeply dentate on the margin^ 
This species, which was introduced by Messrs. Loddiges some years ago, is now scarce in cultivation. 
18. A. Jtabcttifolium, Cavanilles. — A very slender creeping evergreen warm greenhouse Fern, from New 
Holland and Van Diemen's Land. Fronds glabrous, linear, a foot or more long, pinnate, bright green ; pinna; 
small, fan-shaped, petiolate, sharply dentate on the margin ; rachis filiform, elongate, void of pinna? on the apex, 
and rooting at the point. Fronds terminal, adherent to a small fasciculate rhizome. 
19. A. radicans, Swartz (Diplazium, Prcsl). — A beautiful evergreen stove species, from Jamaica and Cuba. 
Fronds glabrous, elongate triangular, a foot and a half long, void of pinna; on the apex, and rooting at the point • 
bipinnatifid, light green ; pinna; elongate, acute or acuminate, obtusely cuneate at the base ; segments ovate- 
obtuse, largest next the rachis, slightly crenate on the margin. Rachis and stipes ebeneous ; terminal, adherent to 
a fasciculate rhizome. 
20. A. pumihan, Swartz. — A dwarf evergreen stove species, a native of the West Indies and the Philippine 
Islands. Fronds triangular, hairy, teruate-bipinnatifid, a few inches high, membranous, of a pale green ; lateral 
pinna? sub-tripartite, intermediate one longest, acute, with roundish crenate lobes ; indusium hairy. Fronds 
terminal, adherent to a somewhat creeping rhizome. This very delicate little species has been but recently intro- 
duced to English gardens from the continent. 
\ TrICHOMANES. 
21. A. Trirhomtincs, Linnaeus, — A very elegant dwarf hardy evergreen Fern, indigenous to Britain and found 
throughout Europe, Asia, and North America. Fronds linear, pinnate, from fotu 1 to ten iuches long, deep green ; 
pinna? numerous, irregularly ovate, obtuse at the apex, crenate at tire margin, truncate-cuneate at the base, and 
articulated with the rachis. Rachis and stipes shining, of a purplish black colour ; terminal, adherent to a 
tufted rhizome. 
A. Trichonuincs, p ineitum. — Fronds lineal-, pinnate, about six inches long; pinna; numerous, deeply and irre- 
gularly pinnatilid ; segments linear, bluntly toothed at the margin. This variety is found in Yorkshire aud at 
Kantclough near Burnley in Lancashire; a similar one has been found in Devonsldre. It retains its peculiar 
character in cultivation, but is invariably without fructification. 
22. ./. numanthemum, Smith (Amonanthes, Linnaus). — A very beautiful evergreen greenhouse Fern, a native 
of the West Indies, Peru, and Cape of Good Hope. Fronds glabrous, linear-lanceolate, one foot long, bright 
green, pinnate ; pinna 1 oblong, dimidiate, sub-imbricate, round al the apex, artieiilate with the rachis, inferior 
ones Qabellate, upper base parallel with the rachis, lower truncate, erenate-serate on the apex and upper margin. 
Sori linear, solitary, or occasionally two on a pinna, horizontal, situate near the inferior margin. Rachis and 
stipes ebeneous ; terminal, adherent to a somewhat tufted rhizome. 
23. ./. dimidiatum, Swartz (A. formosum, Eort). — An elegant evergreen greenhouse species, from the West 
Indies. Fronds glabrous, slender, linear-lanceolate, a foot long, light green, pinnate; pinna 1 oblong, sub- ,, 
jl^| Imbricate, petiolulate, articulate with the rachis, round at the apex, superior base parallel with the rachis, AJJ 
1 
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