P. canadensis, the "cotton-wood" of the western prairies, and its varieties are perhaps the most useful trees of the genus, often forming almost the only arborescent vegetation on the great American plains.
The native country of this form has been much disputed; but, though still known in many British nurseries as the "black Italian poplar," it is now well ascertained to be an indigenous tree in many parts of Canada and the States, and is a mere variety of P. canadensis; it seems to have been first brought to England from Canada in 1772.
The hemlock spruce (Tsuga canadensis) is a large tree, abounding in most of the north-eastern parts of America up to Labrador; in lower Canada, New Brunswick and Nova Scotia it is often the prevailing tree.
Aquifolium, Hydrastis canadensis, &c. It is a yellow, crystalline solid, insoluble in ether and chloroform, soluble in 41 parts of water at 21°, and moderately soluble in alcohol.
Morgan, Bibliotheca canadensis (1867), " Canadian Magazines," by G.
WATER-THYME, known botanically as Elodea canadensis, a small submerged water-weed, native of North America.
The true beaver (Castor fiber) is a native of Europe and northern Asia, but it is represented in North America by a closely-allied species (C. canadensis), chiefly distinguished by the form of the nasal bones of the skull.
Morgan'S Bibliotheca Canadensis (1867) And Canadian Men And Women Of The Time (1898); W.
495).2 This group contains two species - one the Lanius infaustus of Linnaeus and the Siberian jay of English writers, which ranges throughout the pine-forests of the north of Europe and Asia, and the second the Corvus canadensis of the same author, or Canada jay, occupying a similar station in America.
Canadensis, being that which has the most northern range, while the white-bellied S.
Bison no longer roam the plains, and the elk has been driven out; but among the larger mammals still to be found in certain districts are the deer, prong-horn (in small numbers), puma, coyote, timber wolf, lynx (Lynx rufus and Lynx Canadensis) and the black and grizzly bear.
Of waterfowl, the Canada goose (Branta canadensis) is naturalized to a small extent in Britain, and also, to a less degree, the Egyptian goose (Chenalopex aegyptiacus); the latter bird also occurs wild in New Zealand.
Narcotine was shown to be methoxyhydrastine (II.) (hydrastine, the alkaloid of Golden seal, Hydrastis canadensis, was solved by E.
Canadensis); the bay lynx (L.
The typical representative of the group is the North American wapiti C. canadensis, but there are several closely allied races in Central Asia, such as C. canadensis songaricus and C. c. bactrianus, while in Manchuria the subgroup is represented by C. c. xanthopygus, in which the summer coat is reddish instead of grey.
In the North American area Picea alba, P. nigra, Larix americana, Abies balsamea (balsam fir), Thuja canadensis (hemlock spruce), Pinus Strobus (Weymouth pine), Thuja occidentalis (white cedar), Taxus canadensis are characteristic species.