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There is a great number of varieties, including white, pink, scarlet, and double-flowering. It is quite hardy at Kew. R. RACEMOSUM. Central China, 1880. A neat little species, of dwarf, compact growth, from the Yunnan district of China. The flowers are pale pink edged with a deeper tint, about an inch across, and borne in terminal and axillary clusters.
The angioma racemosum venosum is probably also due to a congenital alteration in the structure of the vessels, and is allied to tumours of blood vessels.
Two types are met with: one in which dilatation of a large superficial vein and its tributaries is the most obvious feature; the other, in which bunches of distended and tortuous vessels develop at one or more points in the course of a vein, a condition to which Virchow applied the term angioma racemosum venosum. The two types may occur in combination.
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