This section is from the book "An Illustrated Flora Of The Northern United States, Canada And The British Possessions Vol2", by Nathaniel Lord Britton, Addison Brown. Also available from Amazon: An Illustrated Flora of the Northern United States, Canada and the British Possessions. 3 Volume Set..
A shrub, 3°-15° high, the twigs reddish brown, the youngest very rough-pubescent. Leaves very slender-petioled, ovate-oval, or elliptic, acuminate at the apex, mostly obtuse at the base, pale and woolly-pubescent beneath, densely rough-pubescent above, 1 1/2'-5' long; petioles and rays of the cyme rough-pubescent; cymes rather loosely-flowered, 2-3' broad; flower-buds subcylindric; petals white, oblong-lanceolate; fruit globose, white, about 3" in diameter; stone slightly furrowed, little compressed, often oblique, more or less broader than high.
C. Baileyi Coult. & Evans, Bot. Gaz. 15:. 37. 1890.
A shrub with reddish-brown twigs, much resembling the preceding species. Leaves slender-petioled, ovate or ovate-lanceolate, acute or acuminate at the apex, narrowed or rounded at the base, glabrate, or with finely appressed soft pubescence above, rather densely woolly-pubescent beneath, 1'-5' long; flower-buds ovoid; petals white, ovate-oblong; cymes compact, 1'-2' broad, the rays pubescent; fruit white, about 3" in diameter; stone flattened, slightly oblique, channeled on the edge, much broader than high.
Lake shores and in moist ground, southern Ontario and Pennsylvania to Minnesota and Manitoba. May-June.
Svida intŔrior Rydb., of central Nebraska, Colorado and Wyoming, with similar pubescence, but the stone of the fruit rather longer than thick, formerly included in this species, may be distinct.
C. alba Lam. Encycl. 2: 115. 1786. Not L. 1767. C. stolonifera Michx. Fl. Bor. Am. 1: 92. 1803.
A shrub, 3°-10° high, usually stoloniferous, the twigs glabrous and bright reddish purple, or the youngest finely appressed-pubescent. Leaves slender-petioled, ovate, ovate-lanceolate or oval, acute or short-acuminate at the apex, rounded or narrowed at the base, finely appressed-pubescent above, white or whitish and sparingly pubescent beneath, or sometimes glabrous on both sides, 1'-5' long; cymes 1'-2' broad, flat-topped, usually minutely appressed-pubescent; petals white, ovate-oblong; fruit white to bluish, globose, 3"-4" in diameter, the stone very variable in shape, either higher than broad or broader than high.
In moist soil, Newfoundland to the Yukon Territory, Virginia, Kentucky, Nebraska, Arizona and California. Ascends to 2400 ft. in the Adiron-dacks. Dogberry-tree. Waxberry-cornell. Kinnik-innik. Red brush. Squaw-bush. Gutter-tree. June-July.