A. esculenta (edible). fl. white; umbels opposite the leaves or terminal; involucre wanting. July. l. pinnate; leaflets broadly ovate, acuminated, deeply pinnatifid, profoundly serrated; the two lower leaflets petiolate, sub-ternate. h. 1ft. to 2ft. Mountainous districts of Northern South America, 1823. SYN. Conium Arracacha.
ARRHOSTOXYLUM. Included under Ruellia (which see).
ARROW ARUM. See Peltandra virginica.
ARROWGRASS. See Triglochin.
ARROW-HEAD. See Sagittaria.
ARROWROOT. See Maranta.
ARTABOTRYS (from artao, to suspend or support, and botrys, grapes; in reference to the way the fruit is supported by the curious tendril). ORD. Anonaceæ. A handsome stove evergreen shrub, thriving in a good sandy loam and peat, to which a little rotten dung may be added. Propagated by cuttings made of ripened wood, insert in sand under a bell glass, with bottom heat, in early spring. Seed, when procurable, should be sown as soon after receipt as possible.
A. odoratissimus (sweetest-scented).* fl. reddish brown, extremely fragrant; peduncles opposite the leaves, hooked beneath the middle. June and July. l. oblong-lanceolate, acuminated, smooth, shining. h. 6ft. Malayan Islands, 1758. In Java, the leaves are held to be invaluable as a preventive of cholera.
ARTANEMA (from artao, to support, and nema, a filament; in reference to a tooth-like process growing on the longer filaments). ORD. Scrophularineæ. An interesting and handsome greenhouse evergreen shrub, allied to Torenia. Flowers disposed in terminal racemes, and on short pedicels. Leaves opposite, sub-serrated. It may be treated as hardy during summer, for which purpose seeds should be sown in spring; but it requires the protection of a greenhouse during winter. Artanema grows freely in light rich soil, and is readily increased by cuttings and seeds.