Pinus Pi"nus, n. [L., a pine tree.] (Bot.) A large genus of evergreen coniferous trees, mostly found in the northern hemisphere. The genus formerly included the firs, spruces, larches, and hemlocks, but is now limited to those trees which have the primary leaves of the branchlets reduced to mere scales, and the secondary ones (pine needles) acicular, and usually in fascicles of two to seven. See Pine.
Arolla A*rol"la ([.a]*r[o^]l"l[.a]), n. [F. arolle.] (Bot.) The stone pine (Pinus Cembra).
Slash pine Slash" pine" (Bot.) A kind of pine tree (Pinus Cubensis) found in Southern Florida and the West Indies; -- so called because it grows in ``slashes.'
Lambert pine Lam"bert pine` [So called from Lambert, an English botanist.] (Bot.) The gigantic sugar pine of California and Oregon (Pinus Lambertiana). It has the leaves in fives, and cones a foot long. The timber is soft, and like that of the white pine of the Eastern States.
Pinite Pi"nite, n. [L. pinus the pine tree.] 1. (Paleon.) Any fossil wood which exhibits traces of having belonged to the Pine family. 2. (Chem.) A sweet white crystalline substance extracted from the gum of a species of pine (Pinus Lambertina). It is isomeric with, and resembles, quercite.
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Tamarack Tam"a*rack, n. (Bot.) (a) The American larch; also, the larch of Oregon and British Columbia (Larix occidentalis). See Hackmatack, and Larch. (b) The black pine (Pinus Murrayana) of Alaska, California, etc. It is a small tree with fine-grained wood.
Pinaster Pi*nas"ter, n. [L., fr. pinus a pine.] (Bot.) A species of pine (Pinus Pinaster) growing in Southern Europe.