CONIFERS, OR CONE-BEARING TBEES. 267 



when mature. Seeds rather large, irregular obovate, with 

 firm-keeled margins. A handsome tree, resembling the White 

 Pine of the Eastern States, but of a more compact habit, and 

 the foliage darker green. It grows fifty to sixty feet high, with 

 a very straight stem and smooth bark, until the trees become 

 old. Wood white, soft, and easily worked, closely resembling 

 the White Pine of the East. This species inhabits the moun- 

 tain ranges from Montana to New Mexico, Arizona, and on the 

 Inyo Mountain in California, at high elevations, or from 

 eight to ten thousand feet. Var. albicaulis, Engelm., is a 

 smaller tree with more oval cones, and not quite as long, 

 thicker and somewhat pointed scales. An alpine form found in 

 Montana and British Columbia, also in some of the mountains 

 of California. A handsome and hardy tree, worthy of extended 

 cultivation. 



P. glabra, Walter. Spruce Pine. Leaves in twos, three to 

 four inches long, slender, scattered. Cones about two inches 

 long, solitary, spines nearly obscure ; wings of seed light- 

 colored, long and tapering. Branches and branchlets smooth 

 and light-colored, or whitish. A tree forty to sixty feet high, 

 with soft, white wood. A somewhat rare tree in swampy 

 grounds through South Carolina, Florida, and westward. 



P. mops, Ait. Jersey Pine, Scrub Pine. Leaves in twos, and 

 from two to three inches long, from a short sheath, scattered, 

 rigid, and flat on the innor surface. Cones light-brown, oblong- 

 ovoid, two to three inches long, often curved to one side. 

 Scales armed with a straight, strong spine. The cones open 

 when mature, allowing the small-winged seeds to fall out. 

 Branches spreading and flexible, covered with a smooth, whitish 

 bark while young, but becoming dark-colored and rough witji 

 age. A small tree, fifteen to forty feet high. Wood of little 

 value except for fuel. A widely distributed species on Long 

 Island, Staten Island, New Jersey, and southward to Florida. 



P. insiiiiih, Dougl. Monterey Pine. Leaves in threes, four to 

 six inches long and very slender, very closely serrate, bright 

 green. Cones on short stems, in clusters, deflexed, three to five 

 inches long, and two to three in diameter ; deep chestnut- 

 brown, persistent, and remaining closed for several years. 

 Scales near the base, very thick and roundish. Seeds grooved 

 and rough, black, about a quarter of an inch long, with wings 

 nearly an inch long, broadest above the middle. A large tree, 

 eighty to one hundred feet high near the coast in California, 



