AN ENCYCLOPADIA 
OF HORTICULTURE. 129 
forms 
A. 
Sin. to 15in, long, 
Asplenium—continued. 
or more long; pinnules lanceolate, distant, 2in. to Zin. long, and 
sin. broad; segments lanceolate, Zin. long, two lines broad, 
deeply and sharply toothed. sori small, six to twelve to a seg- 
ment, in two rows near the midrib, the lower ones curved, often 
double. Jamaica, &c. Stove species. SYN. Athyrium brevisorum. 
(bulb-bearing). sti. tufted, 6in. to 12in. long. 
A. bulbiferum 
fronds lft. to 2ft. long, 8in. to 12in. broad, oblong-deltoid, with 
numerous horizontal pinnæ on each side, which are often pro- 
liferous from the upper surface, the largest 4in. to 8in. long, 14in. 
to 2in. broad ; pinnules lanceolate-deltoid, slightly toon od sori 
oblong, when mature often filling the whole breadth of the seg- 
ments. New Zealand, &c., very widely distributed. Greenhouse 
species. 
A. b. Fabianum (Fabia’s). Lower segments deeply pinnatifid, 
with narrow divisions and sub-marginal sori. SYN. A. Fabianum. 
A. b. laxum (loose). Habit more slender; segments narrow, 
so that the sori are often as if marginal. 
A. caudatum (tailed). Probably a form of A. falcatum, but 
having the sori more confined to the centre of the pinnæ, being 
often restricted to two parallel rows close to the rachis. Poly- 
nesia, &c, Greenhouse species, 
Fic. 170. ASPLENIUM CETERACH. 
A, Ceterach, Scale Fern.* sti. densely tufted, lin. to 3in. long, 
scaly. fronds 4in. to 6in. long, sin. to lin. broad, cut down nearly 
or quite to the rachis into alternate, blunt, sub-entire, broadly- 
oblong or roundish pinnæ, with a rounded sinus between them ; 
upper surface naked, lower densely clothed with deep brown 
membranous scales. sori linear oblique. Britain, throughout 
Europe, Northern Asia, &c. This is a variable species, but the 
do not remain constant under cultivation. It should be 
firmly planted in a vertical chink of the rockery in ag lime 
rubbish, rock chippings, and sand, and be watered freely during 
the summer, SYN. Ceterach oficinarum. See Fig. 170. 
C. aureum (golden).* A large variety, producing fronds from 
nl to in. broad, and pinne more oblong 
than the types scales toothed. Canaries and Madeira. This isa 
charming fern, requiring greenhouse treatment. Syn. Ceterach 
aureum. 
A. cicutarium (Cicuta-leaved).* sti. tufted, 4in. to Bin. long. 
Jronds bin. to 15in. long, 4in. to 6in, broad, tripinnate, with ten . 
to fifteen horizontal pinnæ on each side, the lower ones 2in. to 
3in. long, lin. broad, cut down to the rachis into numerous ovate- 
rhomboidal pinnules, which are gin. to in. long, jin. broad, 
obliquely-truncate on the lower side; segments once or twice 
cleft at the apex. sori principally in two rows along the pinnules. 
Tropical America, &c. Stove species. 
A. Colensoi (Colenso’s). sti. tufted, 3in. to 4in. long. fronds 6in. 
to Yin. long, 2in. to 4in. broad, tripinnatifid, with numerous rather 
rigid erecto-patent pinne, the lower on stalks jin, to żin. long ; 
lower pinnules spreading, deeply inciso-pinnatifid, with linear 
segments. sori oblong, solitary. New Zealand. A beautiful 
greenhouse species, SYN. A. Hookerianum., 
A. com (compressed). sti. tufted, 6in. to 8in. long. 
na ronds at to 3ft. long, gin. to 12in. broad, simply pinnate, lanceo- 
, with ten to twenty sessile pinne on each side, which 
are 4in. to bin. long, about lin. broad, acute or bluntish at the 
nt, edge slightly dentate, the upper ones decurrent at the 
ase upon the stout fleshy compressed rachis, the upper side 
narrowed suddenly at about a right angle, the lower one obliquely 
truncate. sori broad, distant, not reaching either the midrib or 
edge. St. Helena. Stove or greenhouse species. 
A. ag ge 2 (contiguous), sti. tufted, 6in. to 9in. long. fronds 
12in. to 18in. long, 4in. to 6in. broad, with twenty to thirty hori- 
zontal sub-falcate pinnæ on each side, which are acuminated at 
the apex ; edge more or less serrated, the base narrowed suddenly, 
and sometimes auricled on the upper, onoi y truncate in a 
Sandwich Isles. G 
curve on the lower side. sori close, copious, falling considerabl 
_ short of the margin Tele reenhouse species, r 
w ae $: 
Asplenium— continued. 
A. crenatum (crenated).* sti. 6in. to 12in. long, scattered. fronds 
Yin. to 15in. each way, deltoid, tri- or quadripinnate, with nine to 
twelve pinnæ on each side, the lowest much the est, 6in. to 
Sin. long, 14in. to 2in. broad ; pinnules lanceolate, cut down to the 
rachis except towards the point on each side into four to six 
blunt oblong segments, two lines long, one line broad, which are 
bluntly toothed. sori two to six to a segment, oblong, usually 
nearly straight, often double. Scandinavia, &c. Hardy species. 
A. cultrifolium (hook-leaved).* sti. 4in. to 6in. long. fronds 6in. 
to 12in. long, 4in. to ôin. broad, bipinnate, deltoid-ovate, with a 
lobed terminal point and six to ten pinne on each side, which are 
šin, to 4in. long, żin. to Zin. broad, acute; edge broadly toothed, 
sometimes lobed below nearly or quite to the rachis, the base 
nearly at a right angle on the upper, but obliquely truncate 
on the lower side. sori falling short both of the edge and 
midrib. West Indies, 1820. Stove species. SYN. Diplazium 
eultrifolium. 
A. cuneatum (wedge-shaped), sti. tufted, 6in. to Sin. long. 
fronds 6in, to 15in. long, 6in. to 9in. broad, tripinnatifid, narrow- 
deltoid, with numerous spreading pinne on each side, the lower 
Sin, to 4in. long, lin. to 14in. broad, lanceolate-deltoid, cut down 
to the rachis into several distinct ovate-cuneate pinnules, which 
are dentate and cut down in the lower part nearly or quite to the 
rachis. sori linear, sub-flabellate. West Indies, and widely dis- 
tributed in both hemispheres, 1832. A very handsome stove 
species, 
A. Dalhousize (Dalhouse’s), Synonymous with A. alternans. 
A. decussatum (decussate). sti. 1ft. to 2ft. long. fronds 2ft. to 
4ft. long, simply pinnate, with numerous pinn# on each side, 
which are 6in. to 12in. long, lin. to 2in. broad, often proliferous 
in the axils ; edge nearly entire. sori reaching nearly to the edge, 
and copiously double. Polynesian and Malayan Islands, &c. 
Stove species. SYN. Anisogonium decussatum. ë 
A. dentatum (dentated).* sti. tufted, 2in. to 6in. long. fertile 
fronds 2in. to 3in. long, lin. broad, with six to eight pairs of 
stalked, sub-opposite pinne, which are jin, broad, gin. deep, 
oblong-rhomboidal, the lower side at the base truncate in a curve, 
the outer edge irregularly crenate. sterile fronds smaller, on 
shorter stalks. sori copious, in two parallel rows. West Indies, 
&c., 1820. A pretty little greenhouse species, 
A. dimidiatum (unequal-sided).* sti. tufted, 6in. to 12in, long. 
fronds 6in. to 1l5in. long, 4in. to 6in. broad, deltoid, sac 5 y 
pinnate, with six to nine opposite pairs of pinne, which are 2in. 
to šin. long, Zin. to lin. broad, acuminated, sharply serrated. sori 
radiant, narrow, longlinear. Tropical America. Stove species. 
A. dimorphum (two-formed).* sti. tufted, 6in. to 12in. long. 
fronds 2ft. to 3ft. long, 12in. to 15in. broad, ovate-deltoid, sterile 
and fertile ones different or combined ; lower pinna ovate-deltoid, 
6in. to Bin. am 2in. broad, bluntly toothed, and the base on 
the lower side o liquel truncate ; fertile pinnæ the same size, but 
with very narrow simple or forked pinnules. sori linear, solitary, — 
Ravina dd d Norfolk Island. - One of the handsomest warm n- 
house species. SYNS. A. diversifolium (of gardens), and re 
dimorpha. 
A. diplazioides (Diplazium-like). A synonym of A. Arnottii, — 
A. diversifolium (diverse-leaved). A garden synonym of A. 
dimorphum. aes 
A. diversifolium (diverse-leaved), Synonymous with A. mazı- 
MUM. ; ; 
A. ebeneum (ebony-stalked).* sti. tufted, Zin. to6in. long. fronds 
uricled, often cordate. sori t ; 
side, oblong, short. Canada, &c., widely distributed, 1779. Green- 
house species. A. ebenoides is wt like this, but the pinnz are 
not cut down to the rachis, and the frond has an elongated 
= ; Peng is only sinuated with a single row of sori on 
each side. j 
A. erectum (erect). Synonymous with A. lunulatum. 
A. erosum (bitten). sti. tufted, 6in. to 9in. long. fronds 6in. to 
12in. long, 4in. to 8in. broad, deltoid, with nine to fifteen pinnæ 
on each side, which are Sin. to 4in. long, šin. to jin. broad, the 
edge slightly lobed and crenato-dentate, the point acuminate, 
the two sides unequal. sori falling short of the edge. West 
Indies. Stove species. Se bs 
A. esculentum (edible).* cau. sub-arborescent. sti. 1ft. to 2ft. — 
long. fronds 4{t. to 6ft. long, pinnate or bipinnate ; lower pinnæ 
12in, to 18in, long, 6in. to 8in. broad; pinnules Jin. to 6in. Jong, 
about lin. broad, acuminate; edge more or less rape genes god : 
narrowed suddenly, often auricled; lines of sort. on all the — 
lateral veinlets. India, &c., 1822. Stove species, SYN. Aniso- 
gonium esculentum. 
A. extensum (extended). sti. tufted, 4in. to 6in. long. fronds 
12in. to 24in. long, about lin. broad, with twenty to forty sessile 
pinne on each side, which are 4in, long, jin. to gin. deep, blunt 
and entire, the upper side rather the broadest and often cordate, 
the lower merely rounded at the base. sori linear-oblong, two 
or three on each side of the midrib. Andes of Columbia and- 
Peru. A very rare greenhouse species, allied to our native A 
Trichomanes. > > o ON a : sie 
