AN ENCYCLOPAEDIA OF HORTICULTURE. 
127 
Aspidium—continued. - 
point mucronate, edge spinuloso-serrated, the upper side sharply 
auricled at the base, the lower obliquely truncate. Britain, &c. 
A very widely-spread hardy species. SYN. Polystichum Lonchitis. 
A. meniscioides (Meniscium-like). sti. 1ft. to 2ft. long, scaly 
below. fronds 2ft. to 3ft. long, 1ft. or more broad, pinnate ; 
. barren pinnæ sessile, 6in. to 9in. long, 1jin. to 2in. broad, oblong- 
acuminate, nearly entire; fertile pinnæ much smaller. sori intwo 
close rows between the primary veins. West Indies, &c. Stove 
species. SYNS. A. confertum and Cyclodium meniscioides. 
A. mohrioides (Mohria-like). sti. tufted, 2in. to 6in. long, more 
or less densely scaly. fronds 6in. to 12in. long, 2in. to 3in. broad, 
bipinnate ; pinnæ numerous, frequently imbricated, lanceolate, 
cut down below into slightly toothed, oblong-rhomboidal pin- 
nules. sori copious. Patagonia and the Cordilleras of Chili. 
Greenhouse species. SYN. Polystichum mohrioides, 
A. mucronatum (mucronated).* sti. tufted, 2in. to 4in. long, 
densely scaly. fronds 12in. to 18in. long, ldin. to 2in. broad, pin- 
nate throughout; pinne very numerous, often imbricated, łin. to 
lin. long, jin. to žin. broad, sub-rhomboidal, unequal-sided, 
mucronate, sub-entire, distinctly auricled at the upper base, sori 
in a long row on each side the midrib. West Indies. Stove or 
greenhouse species. Syn. Polystichum mucronatum. 
A. munitum (armed).* sti, tufted, 4in. to Qin. long, densely 
scaly. fronds lft. to 2ft. long, 4in. to 8in. broad ; pinnz close, 2in. 
to 4in. long, about jin. broad, acuminate, finely spinulose and 
serrated throughout, the upper side auricled, and the lower 
pon bf truncate at the base. sori in two rows near the edge. 
California, &c. Hardy; very fine. SYN, Polystichum munitum. 
A. nephrodioides (Nephrodium-like). Synonymous with A. 
Hookeri, 
A. ocellatum (spotted). Synonymous with A. auriculatum. 
A. pungens (stinging). rhiz. stout. sti. scattered, 1ft. long, scaly 
below only. fronds 2ft. to 3ft. long, Sin, to 12in. broad ; lower 
pme 4in. to 6in. long, 2in. to 3in. broad? pinnules ovate-rhom- 
oidal, unequal-sided, often deeply pinnatifid. sori principally in 
two rows near the midrib. Cape Colony. 
SYN. Polystichum pungens. 
A. repandum (wavy-leaved). sti. 1ft. to 2ft. long, naked. fronds 
‘2ft. or more long, 12in. to 18in. broad, apex deeply pinnatifid, 
with linear-oblong, slightly sinuated lobes; lower pinnz four to 
eight on each side, 6in. to 8in. long, 1łin. to liin. broad, acumi- 
nate ; edge bluntly sinuated, the lowest stalked and forked. sori in 
two distinct rows near the main vein. Philippines, Stove species. 
A. rhizophyllum (frond-rooting). sti. tufted, lin. to 2in. long, 
slender. fronds 2in. to 6in. long, fin. broad, with the long, 
narrow upper half of the frond lengthened out and rooting, the 
lower half cut down to a flattened fibrillose rachis into oblong- 
rhomboidal sub-entire lobes about jin. broad, jin. deep. sori 
scattered. Jamaica, 1820, Stove or cool house species. SYN. 
Polystichum rhizophyllum. 
A. semicordatum (half-cordate). sti. scattered, 6in. to 12in. long. 
bboy 2ft. m gA long, 8in. ii ge simply posi ; pinnæ 
spreading, 4in. . long, }in. to fin. broad, nearly entire, acu- 
minate, cordate or truncate at the base. sori one to t*iree 
rows on each side, the inner one close to the midrib. Tropical 
America, &c. SYN, Polystichum semicordatum. 
A, trapezioides (Trapezium-like). Synonymous with A. viviparum. 
triangulum (triangular).* sti. tufted, 2in. to 6in. long, base 
scaly. fronds lft. or more long, 1jin. to 2in. broad ; pinnæ nume- 
rous, sessile, lower ones distant, central ones 3in. to lin. long, 
about šin. broad, sub-deltoid, lower side obliquely truncate ; apex 
mucronate, edge sub-entire or slightly lobed, with blunt or spinose 
teeth, one or both sides auricled at the sori principally in 
two rows near the edge. West Indies. Stove or greenhouse 
species. SYN. Polystichum triangulum. 
A. trifoliatum (three-leaved). sti. tufted, 1ft. or more long, base 
only scaly. fronds 12in. to 18in. long, 6in, to 12in. broad, with a 
large ovate-acuminate terminal pinna, narrowed or forked at the 
base, and one or two lateral ones on each side, the lowest mostly 
forked. sori in rows near the main veins. Tropical America. 
Stove species. 
A. t. heracleifolium (Heracleum-leaved). A form with pinnæ 
pinnatifid on both sides at the base. 
A. tripteron (three-winged). sti. 6in. to Yin. long, densely scaly 
atbase. fronds 12in. to 18in. long, with a large terminal and two 
small spreading lateral pinnæ at the base of it, the former 2}in. 
to šin. broad, with very numerous spreading pinnules on each 
side, ljin. Jong, about jin. broad, unequal sided, acute, dogi 
inciso-pinnatifid, the lower lobes again toothed ; lateral pinnæ din. 
to 5in. long, l}in. to 2in. broad. sori principally in two rows mid- 
po between midrib and edge. Japan. Greenhouse species. SYN. 
Polystichum tripteron. ` 
A, varium (variable).* rhiz. sub-creeping, sti. 6in. to 12in. 
long, densely fibrillose below. fronds 12in. to 18in. long, 9in. to 
12in. broad, lanceolate-deltoid; lower pinnze much the largest, 
_ Sub-deltoid, unequal sided, 4in. to 6in. long, 3in. to 4in. broad ; 
-pinnules lanceolate, imbricated, with oblong, blunt, slightly 
toothed segments. sori principally in two rows near the midrib. 
Japan. Greenhouse species. SyYNs. Lastrea varia and Poly- 
_ stichum varium, It is frequently met with in gardens under the 
. 
Greenhouse species. 
Aspidium—continued. 
A. viviparum (bud-producing). sti. tufted, 4in. to 6in. long, scaly 
at the base. fronds 12in. to 18in. long, 4in. to 6in. broad ; pinnæ 
numerous, nearly lanceolate, the central ones 2in. to 3in. long, 
about din. broad, mucronate, sometimes bud-bearing, the edge 
more or less deeply lobed, in the lower part sometimes quite down 
to the rachis, the upper side auricled. sori in two or four rows. 
West Indies. Stove or greenhouse species. SYNS. A. trapezioides 
and Polystichum viviparum. 
ASPLENIUM (from a, not, and splen, spleen; re- 
ferring to the medicinal properties formerly attributed 
to the genus). Spleenwort. Orp. Filices. Including 
Anisogonium, Athyrium, Ceterach, Cænopteris, Darea, 
Diplazium, Hemidictyum, Neottopteris. A very large and 
widely-spread genus, including species suitable for the 
stove, temperate, and hardy ferneries. Sori dorsal or sub- 
marginal, linear or oblong. Iuvolucre similar in shape, ` 
straight or occasionally curved, single or double, plane or 
tumid, bursting along the outer edge. The tropical species 
should be grown in a compost of peat, loam, and sand ; the 
hardy sorts in a mixture of fibrous peat and sand. Gcod 
drainage is at all times required. For general culture, see 
Ferns. Po 
Repro, y 
LATA 08 ano 
W ioe 
Fic. 168. ASPLENIUM ADIANTUM-NIGRUM, showing Rootstock and 
back of Fertile Fronds. E 
A. abscissum (clipped). sti. tufted, 4in. to 8in. long. 
bin. to 12in. long, us, to 4in. broad, sometimes proliferous at the 
apex, with twelve to twenty horizontal pinnæ on each side, which 
are ljin. to 2in. long, about jin. broad, bluntish ; edge inciso- 
crenate, the upper one narrowed suddenly at the base, the lower 
one obliquely truncate. sori short, in two regular rows, falling 
short of both midrib and edge. Tropical America, Stove species. 
Syn. A. jirmum, : = : iia 
A. acuminatum (taper-pointed).* sti. 6in. to 9in. long. fron 
lft. to 2ft. long, gin. to l2in. broad, with very numerous close- 
