^ty) THE GENERA AND SPECIES OF CULTIVATED FERNS. 261 1!P 
37. A. diversifotium, Allan Cunningham. — A very elegant evergreen greenhouse species, from Norfolk Island. ■» 
Fronds glabrous, rather ovate-lanceolate, a foot and a half long, light green, tripinnate ; pinna? oblong-acuminate, 
decurrent at the base ; pinnules linear-filiform, longest next the midrib ; segments acute. Fronds terminal, 
adherent to a thick scaly creeping rhizome. The fronds in this species are very variable ; some are all sterile, 
others all fertile, and others again intermediate ; the sterile ones are bipinnate, with pinnules somewhat 
trapezioidal, or roundish ovate, cuneate at the base, and serrate at the margin. 
\ Acuoptebis. 
38. A. scptcntrionale, Hull. — A dwarf evergreen hardy or frame species, indigenous to Britain and found in 
most European countries. Fronds glabrous, a few inches high, dull green, bipartite ; segments linear, occasionally 
bifid, acutely three-toothed at the extremity. Sori linear, longitudinal, subsequently becoming confluent and 
covering the entire segment of the frond, hence named by Linnaeus Aorostichum septentrionale. Fronds terminal, 
often curved on the apex ; adherent to a fasciculate tufted rhizome. 
39. A. germanicum, Weiss (A. alternifolium, Wulfin; A. Breynii, JRetzius). — A dwarf evergreen hardy or 
frame species, indigenous to Britain, and found in Germany, Switzerland, Italy, France, Hungary, and Sweden. 
Fronds glabrous, three or four inches high, pinnate, light green ; pinnae generally alternate, lanceolate cuneate 
at the base, toothed at the apex, lower ones trifid ; terminal, adherent to a tufted rhizome. 
40. A. Miita-muraria, Linnaeus. — A dwarf evergreen hardy Fern, indigenous to Britain, and found throughout 
Europe and in North America. Fronds glabrous, from two to five inches high, somewhat triangular, bipinnate, 
especially below ; pinnules ohovate-cuneate, bluntly toothed at the margin ; sori elongated, becoming confluent 
and covering the whole under surface. Indusium fringed at the margin. Fronds terminal, adherent to a tufted 
rhizome. 
41. A. zamicefoliutn, Willdenow. — An ornamental evergreen stove Fern, a native of Mexico, Hispaniola, and 
New Holland. Fronds rather ovate, glabrous, pinnate, a foot or more long, dull green ; pinna? large, oblong- 
dimidiate, coriaceous, acute, cuneate at the base, inciso-serrate at the margin, with acute segments. Stipes scaly ; 
terminal, adherent to a rather erect rhizome. 
42. A. furcatum, Thunberg. — A neat evergreen warm greenhouse Fern, from the Cape of Good Hope. Fronds 
ovate lanceolate, bipinnate, a foot or more long, light green ; pinna? oblong-acute ; pinnules petiolate, broadly 
cuneate, inferior one tbree-lobed, middle lobe longest, apex serrate. Stipes densely covered with brown narrow 
scales, a few scattered on the rachis. Fronds lateral, adherent to a slender creeping scaly rhizome, about the size 
of a goose quill. 
43. A.pr/cmorsum, Swartz (A. canariensc, Willdenow j A. crosum, Sort.). — A beautiful evergreen warm 
greenhouse Fern, native of the West Indies, Teneriffe, Canary Islands, and New Holland. Fronds lanceolate or 
triangularly-elongate, bipinnate, light green, one and a half to two feet long ; pinnte elongate-acuminate, 
narrowed at the apex ; pinnules remote, cuneate-lanceolate, three- or five-lobed, middle one elongate, margin 
inciso-serrate. Rachis and stipes densely covered with narrow brown scales ; terminal, adherent to a thick 
creeping rhizome. 
44. A. falcatuin, Lamarck. — An ornamental evergreen stove Fern, a native of the East and West Indies, 
St. Helena, and New Holland. Fronds glabrous, oblong-lanceolate, pinnate, one to one and a half foot long, dull 
green ; pinna? cotiaeeous, elongate-lanceolate, falcate, sub-aurieulate, cuneate at the base, inciso-serrate at the 
margin. Rachis and stipes scaly ; terminal, adherent to a short creeping rhizome. Two forms of this species 
are in cultivation, one from Jamaica, the other from Madeira. 
45. A.polyoihn, Forster. — An ornamental evergreen greenhouse Fern, from New Zealand. Fronds glabrous, 
lanceolate, pinnate, two feet long, deep green ; pinna? trapeziod-clongate, acuminate, petiolate, obtusely cuneate 
at the base, doubly serrate at the margin. Rachis and stipes scaly ; terminal, adherent to a creeping 
rhizome. 
46. A. scrra, Langsdorf et Fischer. — A very beautiful evergreen stove Fern, from Brazil. Fronds lanceolate, 
two to two and a half feet long, pinnate, deep green ; pinna? drooping, lanccolate-elongatc-acuminate, coriaceous, 
petiolate, upper base round, inferior cuneate, deeply serrate on the margin. Sori linear, near tin: ensta. Rachis 
and stipes densely covered with narrow brown scales; terminal, adherent to a thick scaly creeping rhizome. 
\ ADIANTt II-MI.IU M 
47. -•(. fontamtm, R. Brown (Aspidium, WiUdffnmu; Polypodium, Linnaus; Aspidium Hallcri, WilMcnoir). 
— A very neat dwarf hardy Fern, indigenous to Britain, and found more or loss distributed throughout Europe. 
Fronds glabrous, rather narrow, rigid, lanceolate, bipinnate, tlirco to six inches long, deep green ; pinna? oblong- 
ovate ; pinnules small, obovate-euneate, witli a few large deep mucronate teeth. Rachis winged throughout. 
Stipes with a few scaly hairs at the base; terminal, adherent to a tufted rhizome. Sori becoming confluent, and 
covering the whole under surface of the frond. 
48. A.hnifinhtiihu, Sudson. — Avery beautiful evergreen hardy or frame species, indigenous to Britain, and 
found in Madeira, thi' Channel Islands, Hungary, liohcmia, and South America. Fronds glabrous. lanceolate, 
from six inches to a foot long, bipinnate, bright green; pinnules obovate, attenuated at the base, deeply and 
ty sharply toothed ; lower pinna? somewhat lolieil. Principal rachis slightly winged. Stipes scaly at the base, 
p terminal, adherent to a tufted rhizome. 
"M i'.l .'. Adiantum-nigrwn, Linnaeus. — An ornamental evergreen hardy Fern, indigenous to Britain, and found 
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