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, 6°-15° high, with gray smooth twigs, even the youngest glabrous or nearly so. Leaves petioled, lanceolate or ovate-lanceolate, long-acuminate at the apex, acute at the base, minutely appressed-pubescent on both sides, pale beneath, 1 1/2' - 4' long; cymes loosely flowered, somewhat paniculate, the rays mostly glabrous; petals white, lanceolate; fruit globose, or slightly depressed, white, about 3" in diameter; fruiting pedicels red; stone subglobose, slightly furrowed, or somewhat broader than high.
Cornus stricta Lam. Encycl. 2: 116. 1786.
C. fastigiata Michx. Fl. Bor. Am. 1: 92. 1803.
A shrub, 8°-15° high, resembling the preceding species, the twigs purplish or reddish brown. Leaves petioled, ovate or ovate-lanceolate, acute or acuminate at the apex, narrowed or sometimes rounded at the base, sparingly and finely appressed-pubescent on both sides, 1 1/2'-3' long, the margins often minutely denticulate, green above and beneath; cymes rather loosely flowered, 1 1/2'-2 1/2' broad, their rays nearly or quite glabrous; petals white, ovate-lanceolate, or oblong; fruit pale blue, about 3" in diameter; stone globose, nearly smooth.
Cornus alternifolia L. f. Suppl. 125. 1781.
A shrub, or small tree, with smooth greenish bark, reaching a maximum height of about 30o and trunk diameter of 8'. Leaves slender-petioled, alternate, clustered near the ends of the branches, oval or ovate, acuminate at the apex, narrowed or sometimes rounded at the base, 2-4' long, pale and appressed-pubescent beneath, glabrate above, the margins minutely denticulate; petioles 1/2'-1 1/2' long; cymes 2-4' broad, pubescent; petals white, or cream-color, lanceolate; fruit globular, or slightly depressed, blue, rarely yellow, about 4" in diameter; stone somewhat obovoid, channeled, scarcely flattened.
In woods. Miquelon Island and Nova Scotia to Georgia, Ontario, Minnesota, West Virginia. Alabama and Missouri. Ascends to 2500 ft. in Virginia. Wood hard, reddish brown; weight per cubic foot 42 lbs. Blue or purple dogwood. Umbrella-tree. Green osier. Pigeon-berry. May-July.