FIG. 29. ADIANTUM LUDDEMANNIANUM.
A. Luddemannianum (Luddemann's).* A very striking variety of the common Maidenhair, [A. Capillus-Veneris], of garden origin, with smooth, dark, almost black stipes, branching about a third of the way up, while the pinnules are crested, usually clustered, at the extremities of the branches, of a deep green, sub-glaucous character. It is a very elegant little greenhouse variety. See Fig. 29.
A. lunulatum (crescent-leaved).* sti. 4in. to 6in. long, tufted, wiry. fronds 6in. to 12in. long, 1in. to 2in. broad, simply pinnate; pinnæ ¾in. to 1in. broad, ½in. to 1in. deep, sub-dimidiate, the lower edge nearly in a line with the petiole, the upper edge rounded and, like the sides, usually more or less lobed. sori in continuous lines along the edge. Hongkong, &c., widely distributed in both hemispheres. Stove species. SYN. A. dolabriforme.
A. macrocladum (long-branched). Synonymous with A. polyphyllum.
A. macrophyllum (long-leaved).* sti. 6in. to 12in. long, strong, erect, nearly black. fronds 9in. to 15in. long, 4in. to 8in. broad, simply pinnate; the lower pinnæ of the barren frond 3in. to 4in. long, 2in. broad, ovate, so broad at the base that the opposite ones frequently overlap, the margin rather deeply lobed; fertile ones narrower. sori in long continuous, or slightly interrupted, marginal lines. Tropical America, 1793. One of the finest stove species in cultivation.
A. macropterum (long-winged). Synonymous with A. Wilsoni.
A. mexicanum (Mexican). Synonymous with A. glaucophyllum.
A. microphyllum (short-leaved). A synonym of A. venustum.
A. monochlamys (one-covered).* sti. 6in. to 9in. long, wiry, erect, dark, chestnut brown; fronds 6in. to 12in. long, 4in. to 6in. broad, ovate-deltoid, tripinnate, the pinnæ rather distantly placed; segments ¼in. broad, cuneate at the base, the upper edge rounded, slightly toothed, of a light green colour, with a firm texture. sori single, or very rarely two, in a hollow of the upper edge. Japan. A very distinct and pretty greenhouse species.
A. monosorum (uni-soriate). A pretty species, from Solomon Islands, not yet in cultivation.
A. Moorei (Moore's).* sti. 6in. to 8in. long. fronds deltoid, 6in. to 15in. long, two to three pinnate; side segments about ½in. long, rhomboid, lower edge deflexed from tip of pedicel, outer lobed half way down. sori round, placed in tip of lobes. Andes of Peru. Stove or greenhouse species. SYN. A. amabile, under which name it is frequently grown.
A. Moritzianum (Moritz's). This appears to be a stronger, more robust grower (fronds from 12in. to 18in. high), with thicker stipes and larger pinnules than the typical [A. Capillus-Veneris.] South America. Greenhouse species.
A. neoguineense (New Guinea).* sti. 6in. to 8in. long, chestnut brown, erect. fronds spreading, deltoid, tri-quadripinnate, dark olive green with a glaucous tinge on both surfaces; pinnæ ovate; terminal pinnules cuneate, lateral ones trapezoid, about ½in. long, crenately lobed, the lobes rather large, entire. sori small, 6in. to 8in., orbicular, entirely sunk in closed sinuses of the marginal lobes. New Guinea, 1877. A very charming stove species.
A. obliquum (oblique). sti. 3in. to 6in. long, erect, wiry, pubescent. fronds 6in. to 12in. long, 2in. to 4in. broad, with a terminal lobe and three to twelve pairs of alternate pinnæ, the lowest 1in. to 2in. long, ½in. to ¾in. broad, costate nearly to the apex, the upper half the largest, rounded at the base, the lower half obliquely truncate at the base, those of the barren frond slightly toothed. sori in numerous interrupted marginal patches, one to two lines broad. West Indies, &c., 1826. Stove species.
A. palmatum (palmate).* fronds with elongated zigzag rachises, elongate-oblong, narrowed to the apex, tripinnate, often reaching 3½ft. long, 10in. broad; pinnules distinct; ultimate segments large, smooth, distant, distinctly stipitate, varying from obovate wedge-shaped to semi-orbicular in outline, but all deeply, palmately cut, 1in. to 1¾in. broad. sori oblong, variable in length, situate at the tips of the segments, usually one to each. This is a very beautiful and graceful stove or greenhouse species. Peru, 1877.
A. patens (spreading). sti. 6in. to 9in. long, erect. fronds dichotomously divided and the branches once or twice divided again; central pinnæ 6in. to 9in. long, 1½in. broad; pinnules ½in. to ¾in. long, ¼in. deep, dimidiate, the two sides nearly parallel, the upper and outer ones broadly and bluntly lobed. sori placed round the upper and outer edge, obversely reniform. Brazil, &c., 1824. Stove species.
A. Pecottei (Pecot's).* This is a charming little variety, of garden origin, with short decompound fronds, imbricated segments, comparatively large, of a deep green colour, and likely to prove one of the most useful maidenhair ferns grown.
A. pedatum (pedate).* sti. 9in. to 24in. long, erect, polished. fronds dichotomous, with the main divisions flabellately branched; central pinnæ 6in. to 12in. long, 1in. to 1½in. broad; pinnules ½in. to ¾in. long, ¼in. deep, dimidiate, broadest on the side nearest the stem, the upper and outer margin lobed, shortly stalked. sori roundish, one to two lines broad. North Hindostan, the United States, &c. Hardy species. See Fig. 30.
A. peruvianum (Peruvian).* sti. 9in. to 18in. long, strong, erect. fronds simply pinnate, or with one to three branches at the base, some of the latter sometimes again slightly divided; pinnules 2in. or more broad, 1½in. deep, unequally ovate, cuneate at base, finely toothed and lobed round the upper and outer edge. sori in interrupted patches round the sides of the pinnules. Peru. This is one of the finest of the large growing, evergreen stove kinds.
A. polyphyllum (many-leaved).* sti. 12in. to 18in. long, strong, erect. fronds 2ft. to 3ft. long, 12in. to 18in. broad, the upper part simply pinnate; lower pinnæ sometimes 1ft. long; 6in. broad, with a long terminal and numerous lateral pinnules; segments ¾in. to 1in. long, ¼in. deep, dimidiate, with nearly parallel edges, the point obtuse, the upper edge sharply toothed. sori in numerous sub-orbicular patches, placed in hollows in lobes along the upper edge. Columbia. A magnificent stove species. SYNS. A. cardiochlæna and A. macrocladum.
A. populifolium (poplar-leaved). A synonym of A. Seemanni.
A. princeps (princely).* sti. 9in. to 12in. long, stout, nearly erect. fronds large, 12in. to 24in. long, 9in. to 18in. across the base, deltoid, pendent, quadripinnate, pale greyish; lower pinnæ obliquely elongate, triangular, the posterior side tripinnate, the anterior bipinnate; upper ones pinnate, with a large cuneately flabellate terminal pinnule, apex of fronds pinnate; pinnules 1in. long, ¾in. broad, roundish rhomboidal or shortly trapeziform, shortly stalked; basal margin entire, slightly concave, the anterior margins and apex lobate, the lobes serrulate in the sterile parts, and, where fertile, bearing each a concave sorus, so that the lobes appear two-horned. New Grenada, 1875. A magnificent stove species.
A. prionophyllum (saw-leaved). Synonymous with A. tetraphyllum.
A. pubescens (downy). Synonymous with A. hispidulum.
A. pulverulentum (covered with powder).* sti. 6in. to 12in. long, strong, erect; fronds with a terminal pinna and several spreading lateral ones on each side, which are 4in. to 8in. long, 1in. broad; pinnules ½in. long, one and a half to two lines deep, dimidiate, the lower line nearly straight, the upper one nearly parallel, both it and the outer edge finely toothed. sori in a continuous line along the lower and upper edges. West Indies, &c. Stove species.
FIG. 30. ADIANTUM PEDATUM.
A. Reichenbachii (Reichenbach's). Synonymous with [A. Henslovianum.]
A. reniforme (kidney-shaped).* sti. tufted, 4in. to 9in. long. fronds simple, orbicular, reniform, of a deep green colour, 1½in. to 2½in. across, with usually a broad, open sinus. sori all around the edge, one and a half to three lines broad. Madeira, &c., 1699. Greenhouse species.
A. r. asarifolium (asarum-leaved). A rather larger growing variety of above species.
A. rhomboideum (rhomboid). S. America, 1820. Probably identical with A. villosum.
A. rubellum (reddish).* sti. 4in. to 6in. long. fronds 4in. to 6in. long, deltoid, bipinnate; uppermost side of the pinnules cuneate, flabellate, nearly sessile, entire; lower rhomboid ½in. long, with lower border in a line with petiole, or rather decurved, inner produced over rachis, outer deeply lobed and finely toothed; end and lowest pinnules deltoid, ½in. broad. sori round, placed in the tips of the lobes. This pretty species is purplish crimson when in a young state, changing to light green with age, but even then tinged with pink. Allied to A. tinctum and A. decorum. Bolivia, 1868. Greenhouse species.
A. scutum (shield). Synonymous with [A. Ghiesbreghti.]
A. Seemanni (Seemann's).* sti. 6in. to 12in. long, erect. fronds 9in. to 20in. long, simply pinnate or the lower pinnæ compound; pinnæ 3in. to 4in. long, 1½in. to 2in. broad, ovate, acuminate; but rather unequally sided, the barren ones finely serrated, one side usually cordate at the base, the other obliquely truncate, petioles of the lowest, nearly an inch long. sori in long continuous marginal lines. This is a very fine and distinct stove species. Central America, 1868. SYNS. A. populifolium, A. Zahnii (of gardens).
A. sessilifolium (sessile-leaved). Synonymous with [A. Henslovianum.]
A. setulosum (bristly). Synonymous with A. diaphanum.
A. speciosum (showy). Synonymous with A. digitatum.
A. subvolubile (somewhat twining). fronds subscandent, 2ft. to 4ft. long, oblong, tripinnate, 6in. to 8in. broad, with naked glossy castaneous stipes and zigzag rachises; central pinnæ lanceolate, with a few short spreading pinnules; side pinnules rhomboidal, about ¼in. long, lower edge in a line with petiole, or deflexed, inner end touching or wrapped over rachis, outer shallowly lobed; lowest pinnules equilateral, much wrapped over rachis. sori minute, round, six to twelve to a segment. E. Peru. Stove species.
A. tenerum (tender).* sti. 1ft. or more high, erect. fronds 1ft. to 3ft. long, 9in. to 18in. broad, deltoid, tri- or quadripinnate; segments ½in. to ¾in. broad, cuneate or tending towards rhomboidal, dimidiate in shape, the upper edge rounder or somewhat angular, broadly and deeply lobed, all stalked. sori placed in numerous roundish patches in the lobes of the upper half. Mexico, &c., widely distributed. Stove species.
A. t. Farleyense (Farley's).* A subfertile, subcristate variety of the foregoing; but, is, nevertheless, one of the most magnificent of Adiantums. It is nearly always known under the name of A. Farleyense. Barbados, 1865. Stove variety.
A. tetraphyllum (four-leaved).* sti. 6in. to 12in. long, strong, erect. fronds nearly as broad as long, with a terminal pinna 6in. to 9in. long, 1in. to 1½in. broad, and numerous spreading lateral ones; segments ½in. to ¾in. broad, ¼in. deep, subdimidiate, the lower line straight or somewhat decurved, the upper nearly parallel, finely toothed, the outer oblique. sori interrupted, marginal. Tropical America. Stove species. SYN. A. prionophyllum.
A. t. Hendersoni (Henderson's). A stove variety with small blunt pinnules.
A. tinctum (tinted).* sti. 6in. to 9in. long. fronds 6in. to 12in. long, deltoid, bipinnate; side pinnules rhomboid, three to four lines long, lower edge straight, inner parallel with rachis, or just wrapped over it, outer shallowly, bluntly lobed; lower pinnules equilateral, imbricated over main rachis; surfaces glabrous, when young of a delicate rose red colour, changing to a bright green. sori round, placed in final lobes. Tropical America. Stove or greenhouse species.
A. trapeziforme (rhomb-leaved).* sti. 6in. to 12in. long, firm, erect. fronds 12in. to 24in. long, with a central pinna 4in. to 8in. long, 2in. to 3in. broad, and two to four large spreading ones on each side, the lowest of which are often branched again; segments 1½in. to 2in. long, ½in. to ¾in. broad, dimidiate, the sides nearly parallel, the outer edge oblique, both it and the upper one bluntly lobed, the lowest on stalks ¼in. to ½in. long. sori numerous, contiguous, placed round the upper and outer edge. West Indies, 1793. Stove species.
A. t. cultratum (sharpened).* Outer edge of the segment bluntly rounded.
A. t. pentadactylon (five-fingered). Lower margin of the segments somewhat decurved obliquely from the petiole.
A. t. Sanctæ Catherinæ (of gardens).* This is a deeply cut, rather copiously divided variety of A. trapeziforme.
A. t. S. C. Funcki (Funck's).* A deeply lobed, drooping variety, of garden origin.
A. triangulatum (triangle-leaved). Synonymous with A. intermedium.
A. varium (various). Probably identical with A. villosum.
A. Veitchianum (Veitch's).* sti. 6in. to 9in. long. fronds 9in. to 18in. long, deltoid, bipinnate in lower half, reddish when young; side pinnules rhomboid, about ½in. long, lower border straight, more or less deflexed from tip of pedicel, inner distant from rachis, upper and outer shallowly lobed; end segments ½in. to ¾in. broad, equilateral, rounded in upper, deltoid in lower half. sori eight to ten to a segment, round, minute. Peruvian Andes, 1868. A very elegant and distinct stove species.
A. velutinum (velvety).* sti. as long as fronds, slightly velvety. fronds deltoid, 1½ft. to 2ft. long, three to four pinnate; rachises densely pubescent on both sides; pinnæ 6in. to 9in. long; segments twenty to thirty-jugate, sub-sessile, sub-rhomboidal, 1in. long, ½in. broad, lower border decurved, outer blunt or sub-acute, upper straight, shallowly, bluntly lobed. sori straight, one to one and a half lines long at tips of lobes of upper edge, four to six to a segment. Columbia, 1866. A magnificent stove species.
A. venustum (charming).* sti. 6in. to 9in. long, wiry, erect, glossy. fronds 6in. to 12in. long, 4in. to 8in. broad, deltoid, tri-quadripinnate; ultimate segments about ¼in. across, cuneate at the base, the upper edge rounded, and usually finely toothed, of a light green colour, with a firm texture. sori one to three, roundish; in hollows of the upper edge. Himalayas, up to 8000ft. Greenhouse or frame, nearly hardy in sheltered places. SYN. A. microphyllum.
A. villosum (hairy stalked).* sti. 9in. to 12in. long, strong, erect. fronds with a terminal central and several spreading pinnæ on each side, 6in. to 12in. long, 1½in. to 2in. broad; pinnules dimidiate, about 1in. long, ½in. broad, the lower line nearly straight, the upper edge nearly parallel with it, but considerably larger, slightly toothed, and the outer edge auriculed at the base. sori in a continuous line round the upper and outer edge. West Indies, &c., 1775. Stove species.
A. Wagneri (Wagner's). Synonymous with A. decorum.
A. Wilesianum (Wiles's). Synonymous with A. crenatum.
A. Williamsii (Williams's).* sti. 6in. to 8in. long. fronds 9in. to 18in. long, tripinnate, triangular; pinnæ ovate, distant, pinnules sub-rotund, slightly trapeziform, the basal line rather concave, the margin entire or slightly undulated, or divided into three to four lobes, crenately notched between the sori, the sterile portions with an erose diaphanous margin. sori eight to ten, elongate reniform or lunate, occupying the whole of the semicircular outer edge. Mountains of Peru, 1877. In a young state, the stipes and fronds are dusted with a yellow powder. This is one of the most beautiful of the Maidenhair ferns. Greenhouse species.
A. Wilsoni (Wilson's).* sti. 6in. to 12in. long, erect. fronds 9in. to 12in. long, 6in. to 12in. broad, simply pinnate, with a large terminal pinna and two to six sub-sessile lateral ones on each side, which are 4in. to 6in. long, 1in. to 2in. broad, ovate or ovate-lanceolate, acuminate, nearly entire. sori in continuous lines along both edges. Jamaica. Stove species. SYNS. A. dolosum, A. macropterum.
A. Zahnii (Zahn's). Synonymous with A. Seemanni.
ADIKE. A synonym of Pilea (which see).
ADINA (from adinos, crowded; in reference to the flowers being disposed in heads). ORD. Rubiaceæ. A very pretty evergreen cool stove shrub, with opposite terete branches, and solitary, axillary peduncles. It thrives in a mixture of loam, sand, and peat. Propagated by cuttings, inserted in a rich, loamy soil, under a hand glass, in heat.
A. globifera (globe-bearing).* fl. yellowish, sessile, crowded, collected into globose heads; corolla funnel-shaped; peduncles axillary, rarely terminal, solitary. July. l. lanceolate, glabrous, longer than the peduncles. h. 3ft. to 4ft. China, 1804.
ADLUMIA (from adlumino, to fringe with purple; flowers bordered with purple). ORD. Fumariaceæ. An interesting, delicate, and nearly hardy climber from North America. Flowers with four spongy, cohering petals. A warm, good soil is most suitable; sow seeds about May in a shady spot. It is a biennial, but in favourable spots is self-sowing, and thus may be treated as a perennial. If placed either against a wall or in the open it is a pretty subject for trailing over a shrub or twiggy branch. From its fragile character, it can only be seen to the best advantage under glass.
A. cirrhosa (tendrilled).* fl. pale rose-coloured, about ½in. long; peduncles axillary, generally four-flowered. June. l. triply pinnate, pale green. h. 15ft. 1788. The Maidenhair fern-like leaves are borne in profusion on the slender twining stems. SYN. Corydalis fungosa.