P. fléxilis.
5. Pìnus fléxilis, James. (Western White Pine.) Leaves 2 to 3 in. long, rigid, entire, acute, densely crowded, sharp-pointed, of a rich dark green color, 5 together in lanceolate, deciduous sheaths. Cones 4 to 6 in. long and half as wide, subcylindric, tapering to the end, semipendulous, clustered. Scales thick, woody, obtuse, loose, 1¼ in. broad, yellowish brown. Seeds rather large, with rigid margins instead of wings. A handsome hardy tree from the Pacific Highlands, occasionally cultivated. It resembles the eastern White Pine, but is more compact and of a darker color.
P. Cémbra.
6. Pìnus Cémbra, L. (Cembra Pine. Swiss Stone-pine.) Leaves 3 to 4 in. long, from a medium-sized deciduous sheath; triangular, rigid, slender, straight, crowded, dark green with a glaucous surface; 5 together. Cones 2½ in. by 2 in., ovate, erect, with obtuse, slightly hooked, but pointless scales. Seeds as large as peas and destitute of wings. A slow-growing, cultivated tree, 40 to 80 ft. high. Forms a regular cone; branches to the ground; Europe; hardy throughout.
P. Tæ̀da.
7. Pìnus Tæ̀da, L. (Loblolly or Old-field Pine.) Leaves in twos and threes, 6 to 10 in. long, with elongated, close sheaths; slender and of a light green color. Cones in pairs or solitary, lateral, 3 to 4 in. long, oblong, conical; the scales having short, rigid, straight spines. A large tree, 50 to 130 ft. high, wild from Delaware, south and west, in swamps and old fields.
