CORNUS ALBA.—­White-fruited Dogwood.  Siberia, 1741.  This is a native of northern Asia and Siberia, not of America as Loudon stated.  For the slender, red-barked branches and white or creamy flowers, this species is well worthy of notice, while the white fruit renders it very distinct and effective.  It grows to about 10 feet in height.  C. alba Spathi is one of the most ornamental of shrubs bearing coloured leaves, these in spring being of a beautiful bronzy tint, and changing towards summer to a mixture of gold and green, or rather an irregular margin of deep gold surrounds each leaf.  It was first sent out by the famous Berlin nurseryman whose name it bears.  C. alba Gouchaulti is another variegated leaved variety, but has no particular merit, and originated in one of the French nurseries.

C. ALTERNIFOLIA.—­North America, 1760.  This species is a lover of damp ground, and grows from 20 feet to nearly 30 feet high, with clusters of pale yellow flowers, succeeded by bluish-black berries that render the plant highly ornamental.  It is still rare in British gardens.

C. AMOMUM (syn C. sericea).—­From the eastern United States.  It is a low-growing, damp-loving shrub, with yellowish-white flowers, borne abundantly in small clusters.  It grows about 8 feet in height, and has a graceful habit, owing to the long and lithe branches spreading regularly over the ground.  The fruit is pale blue, and the bark a conspicuous purple.

C. ASPERIFOLIA is another showy American species, with reddish-brown bark, hairy leaves, of small size, and rather small flowers that are succeeded by pearly-white berries borne on conspicuous reddish stalks.

C. BAILEYI resembles somewhat the better-known C. stolonifera, but it is of more erect habit, is not stoloniferous, has rather woolly leaves, at least on the under side, and bears yellowish-white fruit.  It grows in sandy soil, and is a native of Canada.

C. CALIFORNICA (syn C. pubescens) grows fully 10 feet high, with smooth branches, hairy branchlets, and cymes of pretty white flowers, succeeded by white fruit.  It occurs from southern California to British Columbia.

C. CANADENSIS.—­Dwarf Cornel or Birchberry.  Canada, 1774.  This is of herbaceous growth, and remarkable for the large cream-coloured flower bracts, and showy red fruit.

C. CANDIDISSIMA (syn C. paniculata) is a beautiful American species, with panicled clusters of almost pure white flowers, that are succeeded by pale blue fruit.  It is a small growing tree, with narrow, pointed leaves, and greyish coloured, smooth bark.  Like many of its fellows, this species likes rather moist ground.

C. CIRCINATA, from the eastern United States, is readily distinguished by its large, round leaves, these sometimes measuring 6 inches long by 3-1/2 inches wide.  The yellowish-white flowers are individually small, and succeeded by bright blue fruits, each as large as a pea.