Incarvillea
(named after P. Incarville, a Chinese Jesuit, and a botanical correspondent of Bernard de Jussieu, in the year 1743). ORD. Bignoniaceae. A genus, as now understood, containing three or four species of erect, greenhouse or hardy glabrous perennials, with racemose, bilabiate, tubular flowers. A mixture of loam, peat, and sand, or any light rich soil, will suit them. Propagated by divisions of the roots, or by seeds. I. compacta (compact). fl. bright rose-pink, disposed in clusters; corolla about 2 1/2in. in length, funnel-shaped. Summer. l. unequally pinnate, with short, ovate-acute segments, fleshy, tufted or ultimately scattered. North-west China, 1881. Hardy. (R. G. 1068.) I. Koopmannii (Koopmann's). A synonym of I. Olgae.
I. Olgae (Olga's).* fl. bright rose, produced in the upper axils, on very short stalks; corolla campanulate-infundibuliform, with short, rounded, spreading lobes. Summer. l. opposite, pinnate; segments narrow-oblong, pinnatifid. h. 3ft. to 4 1/2ft. Turkestan, 1880. A very handsome hardy perennial. SYN. I. Koopmannii. (B. M. 6593; R. G. 1001.) I. sinensis (Chinese). fl. nearly sessile, in loose terminal racemes; corolla scarlet, large. l. alternate, bi- or tripinnate; segments narrow. h. 1ft. to 2ft. China. Greenhouse.