AN ENCYCLOPEDIA OF HORTICULTURE. 



129 



Asplenium continued. 



or more long ; pinnules lanceolate, distant, 2in. to 3in. long, and 

 liin. broad ; segments lanceolate, fin. long, two lines broad, 

 deeply and sharply toothed, sort 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. 



A. bulbiferum (bulb-bearing), sti. tufted, 6in. to 12in. long. 

 fronds 1ft. to 2ft. long, Sin. to 12in. broad, oblong-deltoid, with 

 numerous horizontal pinnae on each side, which are often pro- 

 liferous from the upper surface, the largest 4in. to Sin. long, liin. 

 to 2in. broad ; pinnules lanceolate-deltoid, slightly toothed, sori 

 oblong, when mature often filling the whole breadth of the seg- 

 ments. New Zealand, &c., very widely distributed. Greenhouse 

 species. 



A. b. Fabiannm (Fabia's). Lower segments deeply pinnatifid, 

 with narrow divisions and sub-marginal sori. SYN. A. Fabianum. 



A. b. laxnm (loose). Habit more slender; segments narrow, 

 so that the sori are often as if marginal. 



(tailed). Probably a form of A. faleatum, but 



having the sori more confined to the centre of the pinnae, being 

 often restricted to two parallel rows close to the rachis. Poly- 

 nesia, Ac. Greenhouse species. 



FlO. 170. ASPLEMUM CETERACn. 



A. Ceteraoh.' Scale or Scaly Fern. sti. densely tufted, lin. to 

 Sin. long, scaly, fronds 4in. to 6in. long, Jin. to lin. broad, cut 

 down nearly or quite to the rachis into alternate, blunt, sub- 

 entire, broadly-oblong or roundish pinnae, 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 forms do not remain constant under cultivation. It should 

 be firmly planted in a vertical chink of the rockery in loam, lime 

 rubbish, rock chippings, and sand, and be watered freely during 

 the summer. SYN. Ceterach ojficinarum. See Fig. 170. 

 A. C. aureum (golden).* A large variety, producing fronds from 

 9in. to 15in. long, liin. to Sin. broad, and pinnae more oblong 

 than the type ; scales toothed. Canaries and Madeira. This is a 

 charming fern, requiring greenhouse treatment. SYN. Ceterach 

 aureum. 



A. olcntarlnm (Cicuta-leaved).* sti. tufted, 4in. to Sin. long. 

 fronds 6in. to 15in. long, 4in. to 6in. broad, tripinnate, with ten 

 to fifteen horizontal pinnae on each side, the lower ones 2in. to 

 Sin. long, lin. broad, cut down to the rachis into numerous ovate- 

 rhomboidal pinnules, which are lin. to 4in. long, iin. broad, 

 obliquely-truncate on the lower side ; segments once or twee 

 cleft at the apex, sori principally in two rows along the pinnules. 

 Tropical America, Ac. Stove species. 



A. Colensoi (Colenso's). sti. tufted, Sin. to 4in. long, fronds bin. 

 to 9in. long, Sin. to 4in. broad, tripinnatifid, with numerous rather 

 rigid erecto-patent pinnae, the lower on stalks iin. to iin. long ; 

 lower pinnules spreading, deeply inciso-pinnatifid, with linear 

 segments, sori oblong, solitary. New Zealand. A beautiful 

 greenhouse species. SYN. A. Hookerianum. 



A. compressnm (compressed), sti. tufted, 6in. to Sin. long. 

 frondt 2ft. to 3ft. long, Sin. to 12in. broad, simply pinnate, lanceo- 

 late-oblong, with ten to twenty sessile pinnae on each side, which 

 are 4in. to 6in. long, about lin. broad, acute or bluntish at the 

 point, edge slightly dentate, the upper ones decurrent at the 

 base 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 midnb or 

 edge. St. Helena. Stove or greenhouse species. 

 A. contlgnnm (contiguous), tti. tufted, 6in. to 9in. long, fronds 

 12in. to I8in. long, 4in. to 6in. broad, with twenty to thirty hori- 

 zontal sub-falcate pinnae on each side, which are acuminated at 

 the apex ;edge more or less serrated, the base narrowed suddenly, 

 and sometimes auricled on the upper, obliquely truncate in a 

 curre on the lower side, sori close, copious, falling considerably 

 short of the margin Sandwich laics. Greenhouse specie*. 



Aipleninm continued. 



A. crenatmn (crenated).* sti. 6in. to 12in. lone scattered 

 9in. to 15in. each way deltoid, tri- or qnadripllnSS! wUh 

 twelve pinnae on each side, the lowest much the largest, 6in. to 

 9in long, liin. to 2m. 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, Ac. Hardy species. 



A. cnltrifolium (hook-leaved).* sti. 4in. to 6in. long, fronds 6in. 

 to 121n. long, 4in. to 6in. broad, bipinnate, deltoid-ovate, with a 

 lobed terminal point and six to ten pinnae on each side, which are 

 Sin. to 4in. long, iin. to Jin. 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 

 evltrifolium. 



A. onneatom (wedge-shaped), sti. tufted, 6in. to 9in. long. 

 fronds 6ih. to 15in. long, 6in. to 9in. broad, tripinnatifld, narrow- 

 deltoid, with numerous spreading pinnae on each side, the lower 

 Sin. to 4in. long, lin. to liin. 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, 1852. A very handsome stove 

 species. 



(Dalhousie's). Synonymous with A. alternant. 



A. deoussatnm (decussate), tti. 1ft. to 2ft. long, fronds 2ft. to 

 4ft. long, simply pinnate, with numerous pinnae 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, Ac. 

 Stove species. SYN. Anteogonium decussatum. 



A. dentatnm (dentated).* sti. tufted, 2in. to 6in. long, fertile 

 fronds 2in. to Sin. long, lin. broad, with six to eight pairs of 

 stalked, sub-opposite pinnae, which are iin. 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, 

 Ac., 1820. A pretty little greenhouse species. 



A. dlmidiatum (unequal-sided).* sti. tufted, 6in. to 12in. long. 

 fronds 6in. to 15in. long, 4in. to 6in. broad, deltoid, simply 

 pinnate, with six to nine opposite pairs of pinnae, which are 2in. 

 to Sin. long, Jin. to lin. broad, acuminated, sharply serrated, tori 

 radiant, narrow, long linear. Tropical America. Stove species. 



A. dlmorphum (two-formed).* sti. tufted, 6in. to 12in. long. 

 fronds 2ft to 3ft. long, 12ui. to 15in. broad, ovate-deltoid, sterile" 

 and fertile ones different or combined ; lower pinnae ovate-deltoid, 

 6in. to Sin. long, 2in. broad, bluntly toothed, and the base 011 



. . , . 



the lower side obliquely truncate ; fertile pinnae the same size, but 



h very 

 marginal. Norfolk Island. One of the handsomest warm 



with 



narrow 



runc , 



or forked pinnules, sori linear, solita 



ry, 



house species. SYNS. A. divergtfolium (of gardens), and 

 dimorpha. 



A. dlplazloldes (Diplazium like). A synonym of A. Arnottii. 



A. diverBlfolinm (diverse-leaved). A garden synonym of A. 

 dimorphum. 



A. diverslfolinm (diverse-leaved). Synonymous with A. maxi- 

 mum. 



A. ebeneiun (ebony-stalked).* tti. tufted, Sin. to 6in. long, frond.* 

 12in. to ISin. long, 2in. to Sin. broad, linear-lanceolate, with twenty 

 to forty sessile pinnae on each side, which are about lin. long, 

 iin. broad; point acute or bluntish; edge faintly serrate; base 

 hastately auricled, often cordate, tori ten to twelve on each 

 side, oblong, short Canada, Ac., widely distributed, 1779. Green- 

 house species. A. ebenoides is very like this, but the pinnae are 

 not cut down to the rachis, and the frond has an elongated 

 point which is only sinuated with a single row of sori on 

 each side. 



A. erectum (erect). Synonymous with A. lunulatum. 



A. erosurn (bitten), tti. tufted, 6in. to 9in. long, frondt 6in. to 

 12in long, 4in. to Sin. broad, deltoid, with nine to fifteen pinnae 

 on each side, which are Sin. to 4in. long, 4m. to Jin. broad, the 

 edge slightly lobed and crenato-dentote, the point acuminate, 

 thl two sides unequal, tori falling short of the edge. West 



Indies. Stove species. 

 A. esculenttun (edible). 



eau. sub-arborescent. fi. 1ft. to 2ft 



. 



Ion fronds 4ft. to 6ft. long, pinnate or bipinnate ; lower pinnae 

 12in. to 18in. long, 6in. to Sin. broad; pinnules Sin. to 6in. long, 

 about lin. broad, acuminate ; edge more or less deeply lobed; base 

 narrowed suddenly, often auricled ; lines of tori often on all the 

 Literal veinlets. India, Ac., 1822. Stove species. SYN. Anito- 

 gonium tseulentum. 



. extensnm (extended), sti. tufted, 4in. to 6in. long, frondt 

 12in. to 24in. long, about lin. broad, with twenty to forty sessile 

 pinnae on each side, which are iin. long, Jin. to iin. 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. 

 Trichomanet. 



