b533^2_ 
THE GENERA AND SPECIES OF CULTIVATED FEKNS. 
327 
s 
9. X. Gilliesii, Hooker et Greville. — An ornamental evergreen greenhouse Fern, from Brazil. Sterile fronds 
glabrous, ovate-lanceolate, pinnate, one foot or more long, pale green ; pinna? oblique, oblong-ovate, acute, inferior 
ones pctiolate and somewhat cordate at the base, margin serrate. Fertile fronds pinnate, a foot or more high ; 
pinna? linear, acute. Stipes scaly ; terminal, adherent to an erect fasciculate rhizome. 
10. X. magdldnka, Desvaux (L. robusta, Garmichacl; L. obtusifolia, Presl). — An ornamental evergreen frame 
or greenhouse species, a native of Tierra del Fucgo, the Falklands, and other islands of the Southern Ocean. Sterile 
fronds ovate-lanccolatc, pinnate, a foot or more long, deep green ; pinna; linear-lanceolate, coriaceous, acute, inferior 
sub-petiolate, superior adnate, decurrent at the base, margin entire. Fertile fronds pinnate, a foot or more high ; 
pinna? linear, acute. Stipes and rachis scaly ; terminal, adherent to an erect rhizome. This species, if at present 
in cultivation, is very scarce ; it was introduced in 1843, along with L. alpina, by Dr. Joseph Hooker, from the 
Falkland Islands, and is likewise found in Chili, the island of Juan Fernandez, Rio Grande, the Organ moun- 
tains in Brazil, and grows as far north as British Guiana, and on the small island of Tristan d'Aeunha to the 
east. On the Organ Mountains it produces a thick caudex four feet high, which, with the fronds on the top, 
have much resemblance to some species of Zamia? ; hence it was called by Gardner, X. zamioides. 
11. X. onoclcoides, Sprengcl. — An evergreen stove fem, from Jamaica, and other West India Islands. Sterile 
fronds ovate-lanceolate, pinnate, a foot or more long, dull green ; pinna? thick, coriaceous, oblong, rather ovate, 
undulated, petiolate, somewhat round at the base, mucronate-serrate at the apex. Fertile fronds pinnate, a 
foot long ; pinna? linear, acute. Rachis and stipes scaly ; terminal, adherent to a short creeping rhizome. 
12. X. capmsis, Willdenow (L. gigautea, Sort.) — A coarse-looking evergreen greenhouse species, from the 
Cape of Good Hope. Sterile fronds glabrous, pinnate, two to three feet long ; pinna? dark green, linear -lanceo- 
late, six inches long, undulate, cordate at the base, the margin crenulate. Fertile fronds pinnate, three feet 
long ; pinna? entire, six inches long, linear acuminate. Stipes scaly near the base ; terminal, adherent to a thick 
creeping rhizome. This is not the L. gigantea of Kaulfuss, according to Sprengel's description. 
13. X. glandulifera, R. Heward MS. — A robust evergreen stove Fern, from Java. Sterile fronds rather 
ovate, pinnate, two feet long, deep green ; pinna? oblong-elongate, coriaceous, undulate, slightly cordate at the 
base, with the apex acuminate and serrate, petiolate, with a gland beneath on the upper side at the base. Costa 
scaly, stipes paleaceous at the base, with a few narrow scales scattered throughout the rachis. Fronds terminal, 
adherent to an erect rhizome. Fine specimens of this Fern were distributed among Lobb's Java specimens 
(No. 274) ; it has been but recently introduced to English collections from Vienna. 
14. X. Fmseri, Allan Cunningham. — An ornamental evergreen greenhouse Fern, from New Zealand. Sterile 
fronds glabrous, rather ovate, bipinnatifid, fifteen inches long ; pinnules lanceolate, segments oblong-linear, acute, 
the margin dentate. Fertile fronds bipinnatifid, ten inches high, segments linear-oblong. Fronds lateral or ter- 
minal, adherent to a somewhat creeping rhizome. 
BLECHNUM, Ltnnana. — Named from blcchnon, one of the 
Greek names for a Fem. 
Soil linear, continuous or sometimes interrupted, costal, 
rarely medial. Indusium plane, of the same form as the sori, 
and conniving with the costa. Veins in the sterile fronds 
forked; venules direct, free ; those of the fertile fronds com- 
bined near their base, at the point of forking, by a transverse 
vein forming the sporangiferous receptacle, usually near the 
midrib, Fronds simple pinnatilid or pinnate, from six inches 
to five feet long, and generally glabrous. — Some of the noblest 
and largest growing plants in all Ptcriilero belong to this 
genus. In habit and venation they arc similar to Lomaria, but 
are easily distinguished from them by tho fertile fronds not 
being contracted. They aro all natives of tropical or sub- 
tropical regions, and arc easily cultivated. The gi-eat diffi- 
culty of constructing artificial characters for the distinction of 
this race of plants, without forming a multiplicity of genera, 
is in this case obviously manifest; a linear continuous 
costal soma is the true character of the genus, and this is 
found constant throughout all the species belonging to ii that 
are in cultivation, with one exception, in which the sorus 
is mi dial, and often interrupted. Fig. 43 represents the ter- 
minal portion of a frond of B. gracile (uat. size). 
1. B. lanoeola, Swartz. — A dwarf evergreen stove Pern, 
from Brazil, Fronds glabrous, simple, lanceolate, six indies 
long, i'.eep green. Stipes scaly near the base. Fronds nearly 
all fertile; terminal, adherent to a creeping rhizome. 
2. S. glanduhamn, Kaulfuss. — An evergreen stove species, from Brazil 
Fron 1 late, minutely 
I "'" '■ 
i 
