AN ENCYCLOPEDIA OF HORTICULTURE. 



127 



Aspiditutt continued. 



point mucronate, edge spinuloso-serrated, the upper side sharply 

 auricled at the base, the lower obliquely truncate. Britain, Ac. 

 A very widely-spread hardy species. SYN. Polystichum Lonchitis. 

 A. menlscioides (Meniscium-like). sti. 1ft. to 2ft. long, scaly 

 below, fronds 2ft. to 3ft. long, 1ft. or more broad, pinnate ; 

 barren pinnae sessile, 6in. to 9in. long, IJin. to 2in. broad, oblong- 

 acuminate, nearly entire ; fertile pinnae much smaller, sori in two 

 close rows between the primary veins. West Indies, Ac. Stove 

 species. SYNS. A. confertum and Cyclodium meniscioides. 

 A. mohrioldes (Mohria-like). sti. tufted, 2in. to 6in. long, more 

 or less densely scaly, fronds 6in. to 12in. long, 2in. to 3in. broad, 

 bipinnate ; pinnae 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 (inucronated).* sti. tufted, 2in. to 4in. long, 

 densely scaly, fronds 12in. to ISin. long, IJin. to 2in. broad, pin- 

 nate throughout ; pinnae very numerous, often imbricated, Jin. to 

 lin. long, Jin. to fin. broad, sub-rhomboidal, unequal-sided, 

 mucronate, sub-entire, distinctly auricled at the upper base, tori 

 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 9in. long, densely 

 scaly, fronds 1ft. to 2ft. long, 4in. to 8in. broad ; pinnae close, 2in. 

 to 4in. long, about Jin. broad, acuminate, finely spinulose and 

 serrated throughout, the upper side auricled, and the lower 

 obliquely truncate at the base, sori in two rows near the edge. 

 California, Ac. 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, 9in. to 12m. broad ; lower 

 pinnae 4in. to 6in. long, 2in. to 3in. broad ; pinnules ovate-rhom- 

 boidal, unequal-sided, often deeply pinnatifid. sori principally in 

 two rows near the midrib. Cape Colony. Greenhouse species. 

 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 pinnae four to 

 eight on each side, 6in. to Sin. long, IJin. to IJin. 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, Jin. broad, with the long, 

 narrow upper half of the frond lengthened out and rooting, the 

 lower half cut down to a flattened flbrillose rachis into oblong- 

 rhomboidal sub-entire lobes about Jin. broad, Jin. deep, sori 

 scattered. Jamaica, 1820. Stove or cool house species. SYN. 

 Polystichum rhizophyttum. 



A. semicordatum (half-cordate), sti. scattered, 6in. to 12in. long. 

 fronds 2ft. to 3ft. long, Sin. to 12in. broad, simply pinnate ; pinnae 

 spreading, 4in. to 6in. long, Jin. to Jin. broad, nearly entire, acu- 

 minate, cordate or truncate at the base, sori in one to three 

 rows on each side, the inner one close to the midrib. Tropical 

 America, Ac. SYN. Polystichum semicordatum. 

 A. trapezioides (Trapezium-like). Synonymous with .4. viviparum. 

 A. triangulum (triangular).* sti. tufted, 2m. to 6in. long, base 

 scaly, fronds 1ft. or more long, IJin. to 2in. broad ; pinnae nume- 

 rous, sessile, lower ones distant, central ones Jin. to lin. long, 

 about fin. 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 base, sori principally in 

 two rows near the edge. West Indies. Stove or greenhouse 

 species. SYN. Polystichum triangulum. 



A. trifoliatnm (three-leaved), sti. tufted, 1ft. or more long, base 

 only scaly, fronds 12in. to ISin. 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 pinnae 



pinnatifld on both sides at the base. 



A. tripteron (three-winged), sti. (tin. to Sin. long, densely scaly 

 at base, fronds 12in. to 18in. long, with a large terminal and two 

 small spreading lateral pinnae at the base of it, the former 2Jin. 

 to Sin. broad, with very numerous spreading pinnules on each 

 side, IJin. long, about Jin. broad, unequal sided, acute, deeply 

 inciso-pinnatinu, the lower lobes again toothed ; lateral pinnae Sin. 

 to Sin. long, IJin. to 2in. broad, sori principally in two rows mid- 

 way between midrib and edge. Japan. Greenhouse species. SYN. 

 Polystichum tripteron. 



A. varium (variable).* rhiz. sub-creeping, sti. 6in. to 12in. 

 long, densely flbrillose below, fronds 12in. to 18in. long, 9in. to 

 12in. broad, lanceolate-deltoid ; lower pinnae 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. SYNS. Lastrea varia and Poly- 

 xtichum varium. It is frequently met with in gardens under the 

 former name. 



Aspidium continued. 



A. viviparum (bud-producing), sti. tufted, 4in. to 6iii long scaly 

 at the base, fronds 12in. to ISin. long, 4in. to 6in. broad ; pinna 

 numerous, nearly lanceolate, the central ones 2in. to 3in. long 

 about Jm. 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 o, not, and splen, spleen; re- 

 ferring to the medicinal properties formerly attributed 

 to the genus). Spleenwort. OBD. Filicea. Including 

 Anisogonium, Athyrium, Ceterach, Ccenopteris, 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. Involucre 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. Good 

 drainage is at all times required. For general culture, nee 

 Ferns. 



Fio. 168. ASPLENIUM ADIANTUM-NIORUM, showing Rootstock and 

 back of Fertile Fronds. 



A. abscissum (clipped), sti. tufted, 4in. to Sin. long, fronds 

 6in. to 12in. long, 3in. to 4in. broad, sometimes proliferous at the 

 apex, with twelve to twenty horizontal pinnae on each side, which 

 are liin. 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. firmum. 



A. acuminatum (taper-pointed).* sti. 6in. to9in. long, fronds 

 1ft. to 2ft. long, 9in. to 12in. broad, with very numerous close- 



