This section is from the book "The Standard Cyclopedia Of Horticulture Vol2", by L. H. Bailey. See also: Western Garden Book: More than 8,000 Plants - The Right Plants for Your Climate - Tips from Western Garden Experts.
(Greek, dis, two, and chros, color). Syn. Addmia. Saxifragaceae. Rare greenhouse shrub in habit resembling a Hydrangea, with violet-blue flowers in a pyramidal panicle a foot across, and handsome blue berries. Leaves persistent, opposite, stalked, narrow, tapering both ways, serrate: panicles terminal, many-fid.; flowers blue, lilac, or violet; petals 5 or 6, valvate; styles 3-5, club-shaped: seeds numerous, small. The genus has only 1 species, in the Himalayas, Malaya, and China. It is sometimes considered to be bitypic, but the other species, D. pubescens, Miq., is considered by Koorders (Exkursionoflora von Java) to be probably a true Hydrangea.
Lour. (Adamia versicolor, Fortune. Cyani-tis sylvatica, Reinw.). Later writers also include Adamia cyanea, Wall., which Lindley distinguished by its smaller leaves and flowers, 5 petals, and 10 stamens, while A. versicolor had 7, or sometimes 6 petals, and 20 stamens. Plants may still be cult, under the name of A. cyanea, but it cannot be stated here how distinct they are for horticultural purposes. A somewhat virgate shrub 5-9 ft. tall, with lanceolate or obovate-lanceolate leaves to 8 in. long, glabrous except on the nerves; petals less than 1/4in. long. Clarke states that the Chinese varieties have larger flowers than the Indian forms. Occurs in the temperate Himalayas from 5,000-8,000 ft. B.M.3046. P.M. 16:322.
Wilhelm Miller. L. H. B.†