. Cyclopedia of American horticulture, comprising suggestions for cultivation of horticultural plants, descriptions of the species of fruits, vegetables, flowers, and ornamental plants sold in the United States and Canada, together with geographical and biographical sketches. Gardening. ROCHEA ROCK GARDENS 1539 place to induce perfect and early maturity. Dnring winter tlie plants may be kept in a sunny frame or cool, light greenhouse, with only sufficient water to prevent shriveling. A. Clusters usually 2-nowered. jasmlnea, DC. {Crdssula jas'mhiea,'KeY-(ji&^\), Stem herbaceous, 4-12 in. hi
. Cyclopedia of American horticulture, comprising suggestions for cultivation of horticultural plants, descriptions of the species of fruits, vegetables, flowers, and ornamental plants sold in the United States and Canada, together with geographical and biographical sketches. Gardening. ROCHEA ROCK GARDENS 1539 place to induce perfect and early maturity. Dnring winter tlie plants may be kept in a sunny frame or cool, light greenhouse, with only sufficient water to prevent shriveling. A. Clusters usually 2-nowered. jasmlnea, DC. {Crdssula jas'mhiea,'KeY-(ji&^\), Stem herbaceous, 4-12 in. high, decumbent, branched, flower- ing part erect: Ivs. fleshy, oblong-oval, K-M in. long,. 2136. Rose Acaciaâ Robinia hisptda (XH.) 1-2 lines wide: fls. white, tinted with, crimson, sessile, not fragrant, 1% in. long. with R. coccinea are figured in 5:433. AA. Clusters many-flowered. coccinea, DC. (Kalosdnthes coccinea,' Crdssula coccinea, Linu.). Plant robust, shrubby, 1-2 ft. high: Ivs. very closely imbricated, 1-1>2 in. x %-l in.: fls. bright scarlet, lK-2 in. long, fragrant, borne in sum- mer. Cape. Gn. 46, p. 300. 495. 11. falcdia, DC. See Crassiila falcata. p^ y^^ Barclay. KOCE-BKAKE. See Cryptogram ma. ROCE-CRESS. Arahis. ROCE GARDENS. Figs. 2137-40. Nature in time will make a garden even on the unbroken surface of a rock, by clothing it with lichens, algte and mosses of many exquisite forms having much variety and often striking brilliancy in coloring. If there are soil-filled cracks and pockets then ferns and flowering plants will find a place. At low elevations, however, these flowering rock-plants are comparatively few, for soil accumulates rapidly and strong-growing herbs, shrubs and trees, aided by favor- able climatic conditions, soon cover the rock surface or furnish so dense a shade that only mosses, lichens and ferns will thrive. The ideal rock or alpine gardens are within that region on mountain summits between the limits o
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