n. The black or American larch, or hackmatack, Larix Americana, found in moist uplands in British America, and of less size massed in cool swamps in the northern United States.n. The abundant black or ridge-pole pine, Pinus Murrayana, of the Sierras and dry gravelly interior regions of western North America. The allied Pinus contorta, or scrub-pine, of the coast may be also included under the name.