(name made from Oolocasia). Aroldew. Stove foliage plants, of 30 or more original species, from trop. Asia and the Malayan Isls. Closely allied to Caladium and particularly to Colocasia, which see. These three genera differ chiefly in characters of fruit. Monogr. by Engler in DeCandolle’s Monographim Pha nerogamarum, Vol. 2. In 1890, 52 species and specific ally named hybrids were in cult. (Bergman, Jour. Soc. Nat. Hort. France. 1.11. 37: 80).
Alocasias are propagated by suckers or cuttings of the rhizomes, placed in small pots containing a mixture of light, fibrous pest and sand in equal proportions, and plunged in a close frame or propagating box with bot tom heat. They may also be grown from seeds sown in 4-inch pots, in a light, peaty soil in a temperature of 75°F. The month of March is the best time for props gating. The evergreen species (as A. cuprea, longiloba, Lowii, Regina) thrive best in a compost of two parts fibrous peat and sphugnnm moss and one part lumps of fibrous loam, to which should be added a sprinkling of silver sand and a few nodules of charcoal to keep the whole sweet. The herbaceous species (as A . mncrorhiza) do best in good fibrous loam to which ‘A of well-rotted cow-manure or pulverized sheep-manure has been added. Perfect drainage of the pots is absolutely necessary, and in potting, the evergreen species should be coned up two or three inches above the rim of the pot, and finished ofl! with a surfacing of live sphagnum moss. The season of active growth commences about the first of March, when they should be given a temperature of 70° at night, with a rise of 15° by day, and the atmos phere must be kept in a humid condition. They should be given a position free from draughts and direct sun light. They require an abundance of water at the roots as the leaves develop, and are greatly benefited by an occasional watering of clear liquid sheep or cow-manure water. To obtain the best development of the leaves, heavy syringing should be avoided, but frequent spray ing on all fine days with an atomizer sprayer is very beneficial. Towards winter the humidity of the atmos phere and the supply of water to the roots should be reduced with the evergreen species, and gradually with held altogether as the leaves mature with the herbs ceous species. The temperature during winter should 11°‘ “U be/1°“' 600- Cult. by E. J. CANNING.