AN ENCYCLOPAEDIA OF HORTICULTURE. 



19 



Acrostichnm continued. 



simple, lower pinnatifid. Philippine Islands. Stove species. SYN. 

 Stenosemia aurita. 



A. axillare (axillary), rhiz. slender, wide scandent. barren 

 frondi 6in. to 18in. long, about lin. broad, simple, the point 

 bluntish, the edge entire, the lower half tapering very gradually 

 to the base or short stem, fertile fronds bin. to 12in. long, one to 

 three lines broad, flexuose, on a stem lin. to 6in. long. Hima- 

 layas. Greenhouse species. SYN. Chry sodium axillare. 



A. barbatum (bearded). Synonymous with A. scolopendrifolium. 



A. bifurcatum (twice-forked), tti. densely tufted, 2in. to 4in. 

 long, slender, stramineous, naked, fronds 3in. to 4in. long, about 

 iin. broad, pinnate ; lower pinna; of fertile fronds two or three clef t, 

 with linear divisions ; those of the barren pinnae broader, and not 

 so deep. St. Helena. Greenhouse species. SYN. Polybotrya 

 bifureata. 



A. Blumeanum (Blume's).* rhiz. woody, wide climbing, sti. of 

 barren fronds 6in. long, scaly, barren fronds 1ft. to 3ft. long, 1ft. 

 or more broad, with numerous sessile pinnne on each side, which are 

 4in. to 6in. long, lin. broad ; apex acuminate, the edge slightly 

 toothed ; base rounded, fertile fronds with distant pinnae 4in. 

 to Sin.long, Jin. to Jin. broad. Assam. Greenhouse species. SYN. 

 Chrysodiuin Blumeanum. 



A. callsefolium (Calla-leaved). A form of A. latifolium. 



A. canaliculatum (channelled).* rhiz. woody, wide climbing, 

 spinulose and scaly, sti. 1ft. or more long, scaly throughout, fertile 

 fronds 2ft. to 3ft. long, 12in. to 18in. broad, tripinnate ; lower 

 barren pinnae, 6in. to 9in. long, 4in. to 5in. broad ; pinnules lan- 

 ceolate, stalked, with oblong segments, both surfaces naked ; 

 fertile pinnules close, the segments Jin. long, bearing three to four 

 sessile balls of sori. Venezuela. Stove or greenhouse species. 

 SYN. Polybotrya canaliculata. 



A. caudatum (tailed). A synonym of A. petiolosum. 



A. cervinum (stag-horned).* rhiz. woody, creeping, scaly, sti. 1ft. 

 or more long, scaly, barren fronds 2ft. to 4ft. long, pinnate; 

 pinnae 4in. to 9in. long, lin. to 2in. broad, entire or nearly so, 

 unequal at the base ; fertile pinnae distant, linear, lanceolate, 

 bipinnate, with short spreading sub-cylindrical pinnules. Brazil, 

 1840. Stove species. SYN. Olfersia cervina. 



^conforme (conformed), rhiz. wide creeping, scaly, sti. lin. to 

 2in. long, firm, erect, stramineous, naked or slightly scaly. 

 fronds 2in. to 9in. long, iin. to 2in. broad, acute or bluntish, the 



base cuneate or spathulate, the edge entire, barren fronds 

 narrower than the fertile one. A. laurifolium, A. oUusilobum, 

 and several others, are identical with the foregoing. Tropical 

 America, also in the Old World. Stove species. SYN. Elapho- 

 glossum conforme. 



A. erinitum (hairy).* cau. woody, erect, sti. of barren fronds 

 4in. to Sin. long, densely clothed with long scales, barren fronds 

 9in. to 18in. long, 4in. to 9in. wide, broadly oblong ; apex blunt, 

 base rounded, edge entire and ciliated, texture subcoriaceous, 

 both sides scattered over with scales like those of the stipes, fertile 

 fronds like the others, but much smaller, the stipes longer. West 

 Indies, &c., 1793. Stove species. SYNS. Chrysodium and Hyme- 

 nodiinn erinitum. 



A. cylindricum (cylindrical). Synonymous with A. osmunda- 



A. Dombcyanum (Dombey's). A form of A. lepidotum. 



A. flagelliferum (rod-shaped), rhiz. woody, creeping, sti. of 

 barren fronds 6in. to 12in. long, nearly naked, barren fronds 

 simple or with one to three pairs of pinnae, the terminal one ovate 

 lanceolate, entire or repand, often elongated and rooting at the 

 point, the lateral ones Sin. to 6in. long, lin. to 2in. broad ; 

 fertile pinnae 2in. to Sin. long, about iin. broad. India, &c., 1828. 

 Stove species. SYN. Gymnopteris flarjellifera. 



A. 



di 



broad, usually dichotomously forked, with filiform divisions. 



fertile fronds "in. broad, two-lobed. Andes of Ecuador. Stove 



species. (For culture, see A. peltatum). SYN. Rhipidopteris 



fceniculaceum. 



A. Herminieri (Henninier's).* rhiz. stout, creeping, sti. very 

 short, or none, barren fronds lift, to 3ft. long, lin. to liin. broad, 

 simple, acuminate, the lower part narrowed very gradually, fer- 

 tile fronds short-stalked, Sin. to 4in. long, lin. to liin. broad. 

 Tropical America, 1871. Stove species. SYN. Elaphoglosmm 

 Herminieri. 



A. heteromorphum (various-formed), rhiz. slender, wide 

 creeping, scaly, sti. lin. to Sin. long, slender, slightly scaly. 

 barren fronds liin. to 2in. long, Jin. to lin. broad, simple, bluntish, 

 the base rounded, both surfaces scattered over with linear dark 

 castaneons scales, fertile fronds much smaller, and the stipes 

 much longer. Columbia and Ecuador. Stove species. SYN. 

 Elaphoglosmm Jieteromorphum. 



A. Langsdorffii (Langsdorff's). Synonymous with A. muscosum. 



A. latifolium (broad-fronded).* rhiz. thick, woody, creeping, 

 scaly, sti. bin. to 12in. long, firm, erect, naked, or scaly, barren 

 fronds 9in. to 18in. long, 2in. to 4in. broad, simple, acute, gradually 

 narrowed below, entire ; texture leathery, fertile fronds consider- 

 ably narrower than the barren ones. A. longifolium, A. callce- 

 folium, &c., are only varieties of this species. Mexico, Brazil, &c. 

 Stove species. Sv.s. Elaphuglossum latifuliurn. 



fceniculaceum (Fennel-leaved).* rhiz. slender, creeping, sti. 

 istant, slender, 2in. to Sin. long, scaly, barren fronds lin. to2in. 



Acrostichnm continued. 



A. lepidotum (scaly).* rhiz. thick, woody, very scaly, sti. lin. to 

 3m. long, firm, scaly throughout, barren fronds 3in. to 6in. Ion" 

 .ibout iin. broad, simple, usually blunt, the base cuneate or rather 

 rounded, both surfaces and midrib very scaly. A. Dombeyanum, 

 of garden origin, is a varietal form of this, of which there are 

 several others. Tropical America. Stove species. SYN. Elapho- 

 glossum lepidotum. 



A. longifolium (long-leaved). A form of A. latifolium. 



A. Meyerianum (Meyer's). Synonymous with A. tenuifolium. 



A. muscosum (mossy).* rhiz. woody, densely scaly, sti. 4in. to 

 6in. long, firm, clothed with large pale brown scales, barren 

 fronds bin. to 12in. long, lin. to liin. broad, simple, narrowed at 

 both ends ; upper surface slightly scaly ; lower quite hidden by 

 imbricated brownish scales, fertile fronds much smaller than the 

 others, the stipes longer. Madeira. Greenhouse species. SYN. 

 A. Langsdor/ii. 



A. Neitnerii. Synonymous with A. quercifolium. 



A, nicotiansefolium (Tobacco-leaved).* rhiz. woody, wide 

 creeping, scaly, sti. lift, to 2ft., scaly below, barren fronds 

 1ft. to 3ft. long, 1ft. or more broad, with a large terminal pinna, 

 and one to three lateral pairs, which are 6in. to 9in. long, lin. to 

 Sin. broad, acuminate, entire, or nearly so, the base slightly 

 rounded, fertile pinnae distant, 3in. to 4in. long, Jin. broad. Cuba, 

 &c. Stove species. SYN. Gymnopteris nieotianosfolium. 



A. osmundaceum(Osmunda-like).* rhiz. woody, wide scandent, 

 scaly, sti. 12in. to 18in. long, firm, erect, scaly at the base. 

 barren fronds ample, bi- or tripinnate ; the lower pinnae 1ft. to 2ft. 

 long, 4in. to 8in. broad ; pinnules stalked, lanceolate, with closely 

 set sub-entire segments, of a light green colour ; both surfaces 

 naked, fertile frond nearly or quite as large as the barren ones ; 

 segments linear cylindrical, Jin. to iin. long. Tropical America. 

 Stove species. SYNS. A. cylindricum, and Polybotrya osmun- 

 daceum. 



A. paleaceum (chaffy). Synonymous with A . squamosum. 



FIG. 22. ACROSTICHUM PELTATUM. 



A. peltatum (peltate-fronded).* rhiz. slender, wide creeping, sti. 

 distant, slender, lin. to 4in. long, scaly throughout, barren fronds 

 lin. to 2in. each way, repeatedly dichotomously forked, with 

 narrow linear ultimate divisions, quarter to half line broad, fertile 

 fronds iin. broad, often two-lobed. West Indies. . Stove or green- 

 house species. This elegant little fern requires a liberal supply of 

 water all the year round, and is best grown in a well drained pan 

 of good fibrous peat, leaf soil, and sand, with some nodules of sand- 

 stone raised above the rim of the pan ; do not disturb it more 

 than is necessary. SYN. Rhipidopteris peltata. See Fig. 22. 



A. petiolosum (petioled). rhiz. woody, wide scandent. sti. woody, 

 erect, scaly at the base, fronds bipinnate, or tripinnatifid, 2ft. to 

 4ft. long, 1ft. to 3ft. broad, deltoid ; the upper barren piuniu 



