2638 



PINUS 



PINUS 



dense, regular habit and slow growth; 

 forms a narrower and denser pyramid than 

 the white pine (P. Strobus). 



7. excelsa, Wall. (P. nepalensis, 

 Chambr.). Attains 150 ft., with spreading 

 and slightly ascending branches forming a 

 broad open pyramid: branchlets greenish, 

 glabrous, glaucous: winter buds cylindric- 

 obovate, acute: Ivs. slender, flaccid, droop- 

 ing, grayish or bluish green, 6-8 in. long: 

 cones cylindric on l-2-m.-long stalks, 6-10 

 in. long; seeds brown, 4 lines long. Himal- 

 ayas. Gn. 31, p. 195. A.G. 19:149. F.E. 

 13:664 (pi. 8); 33:113. Gn.M. 6:290. 

 M.D.G. 1903:185. Handsome tree, of 

 somewhat loose habit, with graceful pen- 

 dulous foliage, hardy as far north as Mass. 



in sheltered positions. 



Var. zebrina, Bailly 



has the Ivs. with a 

 whitish zone near the 

 tip. F.E. 31:191. 

 R.H. 1889, p. 392. 



8. Strdbus, Linn. 

 (Strdbus Strdbus, 

 Small). WHITE PINE. 

 Figs. 2958, 2963, 2964. 

 Attains 100, occasion- 

 ally 150 ft., with 

 horizontal branches in 

 regular whorls form- 

 ing a symmetrical 

 open pyramid; in old 

 age the head is usu- 

 ally broad and open 

 and often very pictur- 

 esque: branchlets 

 greenish or light 

 greenish brown, gla- 

 brous or slightly 

 puberulous: winter 

 buds ovate, acuminate: Ivs. soft, bluish 

 green, 2-4 in. long (or 33^-5): cones on 

 stalks 3^-1 in- long, cylindric, slender, 

 often curved, 2-4 in. long, with oblong- 

 obovate scales; seed red-brown, mottled 

 with black, 3 lines long. Newfoundland to 

 Man., south to Ga., 111. and Iowa. S.S. 

 11:538,539. A.G. 12:645; 13:1. Gn. 30, 

 p. 404. F.E. 15:340. C.L.A. 11:310. H. 

 W. 1:9, pp. 183-5. Very valuable orna- 

 mental hardy pine of rapid growth, sym- 

 metrical when young, picturesque in old 

 age: no tree is better adapted to break up 

 the monotonous sky-line of plantations in 

 northern parks. There are a number of 

 gardens forms occasionally cult. Var. alba, 

 Loud. (var. nivea, Carr.). Low form of 

 irregular habit, with almost silvery white 

 foliage. Var. afcrea, Carr. With yellow 

 foliage. Var. gla&ca, Beissn. With light 

 bluish green foliage. Var. brevifdlia, Loud, 

 (var. nana, Knight. Var. pygmxa, Hort.). 

 Dwarf, compact, round bush, with short 

 Ivs. F.E. 20:788 (pi. 112); 29:569. Gt. 

 52, p. 435. Gn. M. 2:23. Var. fastigiata, 

 Beissn. (var. pyramidalis, Hort.). With 

 ascending branches, of narrow pyramidal 

 or columnar habit. Var. prostrata, Arb. 

 Kew. Dwarf, procumbent form, diffuse 

 and trailing on the ground. Var. umbrac- 

 ulifera, Knight. Dwarf, flat-topped bush, 

 with short Ivs. R.H. 1869, p. 38. There 

 are also forms with variegated foliage. 



2964. Pinus Strobus. 



2965. Cones of pines. Be- 

 ginning at the top: P. Coul- 

 teri, P. Lambertiana, P. pa- 

 lustris, P. radiata. 



9. monticola, Don. MOUNTAIN WHITE 

 PINE. Tree, to 100 or occasionally 150 ft., 

 with slender, spreading, somewhat pendu- 

 lous branches forming a narrow open 

 pyramid: branchlets puberulous, yellow- 

 ish or reddish brown: winter buds ovate, 

 acute: lys. stiff, bluish green and glaucous, 

 1)^-4 in. long, with few inconspicuous 

 or no lines on the back: cones short- 

 peduncled, cylindric, slender, slightly 

 curved, 5-11 in. long, yellowish brown; 

 scales pointed by the slightly thickened 

 umbo; seed red-brown, mottled with black, 

 Jiin. long. Brit. Col. to Idaho and Calif. 

 S.S. 11:540, 541. G.F. 5:5, 7. R.H. 1869, 

 p. 126 (as P. Groezelieri). F.E. 31:293. 

 Similar to P. Strobus, but forming a some- 

 what narrower, more slender pyramid; 

 hardy as far north as Mass. 



10. Lambertiana, Douglas. SUGAR 

 PINE. Fig. 2965. Tree, to 200 or 220 ft., 

 with spreading somewhat pendulous 

 branches forming a narrow open pyramid ; 

 old trees usually with flat-topped wide- 

 spreading open head: branchlets brown, 

 pubescent: winter buds oblong-obovate, 

 apiculate: Ivs. stout, sharply pointed, 

 dark bluish green, 3-4 in. long, with con- 

 spicuous white lines on the back: cones 

 on peduncles 2-3^ in. long, cylindric, 

 often slightly curved, light brown, lustrous, 

 10-20 in. long; seed about %in. long, dark 

 brown or nearly black. Ore. to Mex. S.S. 

 11:542, 543. Gn. 31, pp. 152, 153. G.C. 

 II. 23:11; III. 1:769. F.S.R. 1, p. 129. 

 M.D.G. 1905:126. G.W. 8, p. 617. One 

 of the tallest trees of the Pacific Coast; in 

 the eastern states it is hardy as far north 

 as Mass., but grows slowly; has handsome 

 dark foliage. 



11. Ayacahuite, Ehrenb. (P. Bonapdrtea, 

 Roezl. P. Don-Pedrii, Roezl. P. Loudo- 

 niana, Gord.). Tree, to 100 ft., with 

 spreading, slender branches: branchlets 

 yellowish brown, finely pubescent: lys. 

 slender and somewhat pendulous, bluish 

 green, 4-6 in. long: cones short-stalked, 

 cylindric-conical, gradually narrowed 

 toward the apex, often slightly curved, 

 brownish yellow, 9-15 in. long; seeds about 

 J^in. long, gray -brown, mottled dark 

 brown. N. Mex. G.C. II. 18:493; III. 

 20:751,753. Gn. 25, pp. 192, 193. C.L.A. 

 7:364. Handsome tree, somewhat re- 

 sembling the white pine, but foliage more 

 slender, especially ornamental with its 

 large cones. Not hardy N. 



Section II. PARACEMBRA. 

 Group 4. CEMBROIDES. 



12. Parryana, Engelm., not Gord. (P. 

 quadrifolia, Sudw.). NUT PINE. PINNON. 

 Tree, to 40 ft., with stout, spreading 

 branches, forming a regular pyramid, but 

 in old age usually round-topped and irreg- 

 ular: branchlets puberulous, light grayish 

 brown: Ivs. 3-5, usually 4, rigid, incurved, 

 pale glaucous green, IJ^-IM m - long: 

 cone subglobose, 1^-2 in. broad, chest- 

 nut-brown, lustrous; apophysis thick, 

 pyramidal, conspicuously keeled; umbo 

 with minute recurved prickle; seed about 

 Min. long. Calif. S.S. 11:549. M.D.G. 

 1903:97. Not hardy N. 



