*Heracleum Wilhelmsii.—The leaves of this species are very large, downy, and wrinkled, much divided, with lance-shaped, acute segments distant from each other. The stem is more than 6½ ft. high, and bears whitish flowers, in umbels from 10 ins. to 12 ins. in diameter. Siberia.
Several other species are in cultivation, the principal of which is H. platytænium, a biennial of very large dimensions, and remarkably ornamental in habit and foliage.
Humea elegans.—This well-known plant may be very agreeably associated with many of the subjects mentioned in this book, and is a graceful object in the centres of beds, etc. To be put out early in May. New Holland.
*Hydrangea quercifolia.—This is quite distinct in aspect from the common Hydrangeas, and sufficiently striking to deserve a place where variety of form is sought. The leaves are, as the name indicates, somewhat lobed and oak-like in outline. It is best adapted to form a bush, its natural habit, and is best used singly. I, however, have never tried to train young plants of it with a single stem; it might be worth the trial. It is a native of N. America. A rich and somewhat moist soil, with shelter, will be found to suit it best. Well adapted for isolation.
*Inula Helenium.—A vigorous-growing British plant, about 3 ft. or 4 ft. high, with a stout stem, branching in the upper part, and large, oblong-oval leaves, of a delicate green colour. The flowers are yellow, and are borne in loose clusters. Well suited for planting along with other large-leaved plants, or as isolated specimens on rough slopes, or wild places, in free, moist, good soil. Multiplied by division in spring or autumn, or by seed.
*Jubæa spectabilis.—A very handsome, hardy S. American palm, with a short, arboreous, smooth stem, which sometimes attains a height of nearly 40 ft., and spreading pinnate leaves, of a full, deep-green colour, and from 6 ft. to 12 ft. long, the leaflets being from 1 ft. to 1½ ft. long and about an inch wide, springing in pairs from nearly the same spot, and standing out in different directions. The leaf-stalks are very thick at the base, where they are enclosed in a dense mass of rough, brown fibres, which grow upon their lower edges. The soil for this plant should be a mixture of two parts of rich loam and two parts composed of peat, leaf-mould, and sand. This exists in the open air throughout the winter, near London, but not in such a condition as to encourage many to try it in this way. Grown in tubs in the conservatory in winter, and placed in the open air in summer, it will prove very satisfactory for association with the hardier palms.
*Juncus effusus spiralis.—A very singular-looking rush, forming spreading tufts of leaves, which, instead of growing, straight, like those of other kinds, are curiously twisted in a regular corkscrew form. From its very unusual appearance it is well worthy of cultivation, and may be planted with advantage on the margins of pieces of water, near cascades, etc., or in the artificial bog. It is easily multiplied by division of the tufts.
*Kochia scoparia.—An annual plant of the Goose-foot family, forming a neat, compact, pointed bush, from 3 to 5 ft. in height. The flowers are green and insignificant, but the graceful habit of the plant renders it valuable and effective, placed either singly or in groups, on the slopes of pleasure-grounds, especially from July to September—the time of its full development. It should be sown in April and May, in a hotbed, and afterwards planted out in beds or borders. Southern Europe.
*Kœlreuteria paniculata.—A small sized, hardy, deciduous tree, from N. China, from 15 ft. to 19 ft. high, and handsome both in foliage and flower. The leaves are pinnate, and of a dark, glistening-green colour; the leaflets ovate, and coarsely toothed. Flowers yellow, in terminal, spreading clusters, and succeeded by large, reddish, pendent, bladdery capsules, which render the tree conspicuous till late in the autumn. It does best in rich, moist soil. When planted in a dry and arid position, the leaves are never so large or glistening, and soon turn yellow and fall. It is one of the trees which may, as advised for the Ailantus, be kept in a small state by cutting them down annually, and will, thus treated, furnish a fine effect. Easily multiplied by seed, layers, and cuttings.
Latania borbonica.—A well-known, hardy, and favourite palm, attaining a height of 25 ft., with large, fan-shaped leaves, over 5 ft. broad, of a cheerful green colour, and with pendent marginal segments. The leaf-stalks are over 4 ft. or 5 ft. long, and are armed at the edges for half their length with short reflexed spines. May be placed in the open air about London and southward in sunny dells in summer, and is a fine warm-conservatory or stove ornament in winter.