PINUS 



PINUS 



2637 



Section I. CEMBRA. 

 Group 1. CEMBR/E. 



1. Cembra, Linn. Swiss STONE PINE. Tree, to 

 70 or sometimes 120 ft., with spreading usually short 

 branches forming a narrow, dense pyramid, in old age 

 often with very picturesque broad, open, round-topped 

 head : branchlets coated with dense yellowish brown 

 tomentum: winter buds globose-ovate, long-acumi- 

 nate: Ivs. straight, dark green on back, bluish 

 white inside, 2-3 H i n - long: cones short-peduncled, 

 ovate, obtuse, light brown, 2^-3Ji in. long; scales 

 broadly ovate, rounded at apex, apophysis much 

 broader than high; seed K m - long. Cent. European 

 Alps. H.W. 1:8, pp. 174-7. G.W. 1, p. 352; 7, p. 

 19. G.C. II. 17:80, 81; III. 24:459. Gn. 19, p.369; 

 28, pp. 175, 182; 59, p. 59; 65, p. 431. Gt. 45, p. 

 205; 58, p. 443. Handsome hardy pine of slow 

 growth and symmetrical -habit when young. The 

 large seeds are eaten. Var. columnaris, Beissn., is a 

 form of narrow, columnar habit. G.W. 2, p. 209. 

 Var. compacta, Beissn., is compact and conical in 

 habit. Var. sibirica, Loud. (P. sibirica, Mayr), has 

 shorter Ivs. and longer cones, and is of narrower 

 habit and more vigorous growth. N. Russia and 

 Siberia. Var. pumila, Pall. See F. pumila in suppl. 

 list. 



2. koraiensis, Sieb. & Zucc. (P. mandshiirica, Rupr.). 

 Pyramidal tree, to 100 ft.: branchlets with yellowish 

 brown pubescence: winter buds oblong-ovate, acumi- 

 nate, dark chestnut-brown: Ivs. straight, dark green 

 and glossy on the back, bluish white on the inner sides, 

 2^-4 in. long: cones almost sessile, conic-oblong, 

 yellowish brown, 4-6 in. long; scales rhombic-obovate, 

 with recurved obtuse apex; seed over Min. long, brown, 

 sharply edged. Japan, Korea. S.Z. 2:116. Gng. 6:1. 

 F.E. 18:333; 25:35. S.I.F. 1:2. In cult, of slow 

 growth, forming a rather dense, broad pyramid, with 

 handsome foliage. One of the best hardy pines for 

 smaller gardens. 



Group 2. FLEXILES. 



3. Armandi, Franch. (P. scipionifdrmis, Mast. P. 

 Mastersiana, Hayata). Tree, to 60 ft., with wide-spread- 

 ing horizontal branches: branchlets glabrous: winter 



buds cylindric, chestnut-brown: Ivs. slender and thin, 

 3-6 in. long, serrulate, bright green: cones peduncled, 

 oblong-conical, 4-6 or sometimes 8 in. long, yellowish 

 brown; scales obovate, appressed, much thickened in 

 the middle, with large broadly rhombic apophysis and 

 small obtuse thickened umbo often slightly recurved; 

 seeds pale reddish brown, ovoid, compressed, Kin- long, 



2962. Pinus flerilis (XX). No. 4. 



2963. Pinus Strobus (Xh)- No. 8. 



with a sharp edge all around. Cent, and W. China. 

 B.M. 8347. G.C. III. 33:34 (as P. koraiensis), 66. 

 R.H. 1910, p. 425. A handsome pine which has proved 

 hardy at the Arnold Arboretum. 



4. flexilis, James. LIMBER PIXE. Fig. 2962. Tree, to 

 50, occasionally to 80 ft., with stout horizontal branches 

 forming a narrow open pyramid, in old age with low, 

 broad, round-topped head: whiter buds broadly ovate, 

 slender-pointed: Ivs. rigid, acute, dark green, 1)^-3 in. 

 long: cones short-stalked, ovate to cylindric-ovate, 

 light brown, 3-6, rarely 10 in. long; scales rounded at 

 the apex, tipped with an obtuse, dark umbo, the lower 

 ones elongated and reflexed; seeds dark brown, mottled 

 with black, J^-Hin. long, with narrow wing. Alberta to 

 Calif, and New Mex. S.S. 11:546,547. G.F. 10:165. 

 B.M. 8467. M.D. 1904:49. F.E. 29:47. Hardy pine 

 of slow growth; seems to be best adapted for ornamen- 

 tal planting on rocky slopes. Var. reflexa, Engehn. (P. 

 reflexa, Engehn. P. strobiformis, Sudw., not Engehn.). 

 Tree, to 100 ft.: Ivs. slender, to 4 in. long, entire or 

 remotely serrulate: cones 5-9 in. long, on longer stalks, 

 with often thin reflexed scales. Ariz. S.S. 11:544, 545. 

 Var. albo-variegata, Schwerin. Has many of Ivs. white. 



Group 3. STROBI. 



5. parviflora, Sieb. & Zucc. Tree, to 80 ft., of dense, 



Cyramidal habit, with slender, horizontal branches: 

 ranchlets light greenish brown, puberulous: Ivs. 

 crowded, rather stiff, usually twisted, forming brush- 

 like tufts at the end of the branchlets, bluish green, 

 %-lK in. long: cones ovate or oblong-ovate, almost 

 sessile, reddish brown, 2-3 in. long; seeds dark brown, 

 hardly Kin. long, with short wing. Japan. S.Z. 2 : 115. 

 S.I.F. 2:2. A.G. 14:212. Hardy and very ornamen- 

 tal pine, bearing numerous decorative cones when 

 older. Cult, plants are often grafted and assume a more 

 irregular habit. In Japan it is often cult, in pots and 

 dwarfed. Var. glauca, Beissn. With bluish green Ivs. 

 The wild form with somewhat longer Ivs., longer cones 

 and seeds with longer wings has been described as P. 

 pentaphylla, Mayr. 



6. Peftce, Griseb. (P. excelsa var. Peitce, Beissn.). 

 Attains 50 ft., with ascending short branches forming 

 a narrow dense pyramid : branchlets greenish, glabrous, 

 not glaucous: whiter buds ovate: Ivs. straight, bluish 

 green, 3-4 in. long: cones short-stalked, cylindric, 3K~6 

 in. long, with obovate scales; seed 4 lines long. S.E. 

 Eu. Gn. 76, p. 613. An ornamental hardy pine of 



