BETULACELE.
Betula alba, var. populifolia. American White Birch. Northern and Northeastern United States. A small and slender graceful tree, fifteen to twenty-five high, growing from Maine to Pennsylvania, and sparsely on the great lakes.
B. papyracea. Canoe birch, Paper Birch. Northern aod northeastern United States. A large and handsome tree, growing to the height of seventy• feet, and with a diameter of three feet. It is limited to the northern portions of the country, ranging from Maine to Wieconain on the north ern border, and extending far northward into Canada. It haa a brilliant white hark. from which Indiane and traders construct canoes. The thin, external sheet of the bark forms the basis of a great variety of Indian fancy work. B. lutea. Yellow Birch. Northeru and northeastern. United States. This is a beautiful large tree, growing in moist woode an our northern border. The wood is strong, fine-grained, and makes hsndsome furniture.
B. lento. L. Cherry Birch ; Black Birch. Northern and northeastern United States. This, like the preceding, is a large tree, chiefly of our northern borders, but extending also along the Allegheny regiun southward. The bark
and twigs are highly aromatic. The wood is of a rosy hue, fine-grained, and valuable for cabinet work and for timber.
B. nigra. L. River Birch ; Red Birch. Eastern United' States. This becomes a large tree in favorable situations. It ie found along the banks of rivers from Ea.stern Massa chusetts southward to Florida. and westward to Ken tucky, Illinois, and Iowa. The wood is similar to that of the preceding.
B. ocddentalis. Western Birch. Rocky Mountains. This species is a small tree, rarely over twenty-five feet high and six inches in diameter. It is found in the Rocky mountains, along streams; in Colorado, Utah, etc.
Alnus incana. Speckled Alder. Northeastern United' States. A shrub, or small tree, growing along streams in New England, New York, and northward. Mao particu lar value.
A. rhombifolia. California Alder. California.
A. Oregona. Oregon Alder. California and Oregon. On the Pacific coaat, in California and Oregon. Often becom ing a large tree, sixty to eighty feet high, with a trunk two feet in diameter.