PINUS 



PINUS 



2641 



2970. Pinus ponderosa. ( X H) 



26. montana, Mill. Swiss MOUNTAIN PINE. Very 

 variable in habit, usually low, often prostrate shrub, 

 sometimes pyramidal tree to 40 ft., similar to the pre- 

 ceding: branchlets usually of darker, brownish color: 

 Ivs. bright green, acutish, stout, crowded, %-2 in, 

 long: cones ovate or conic-ovate, M-2} in. long; apo- 

 physis often pyramidal; 

 umbo light gray, sur- 

 rounded by a blackish 

 ring. An anatomical 

 character in the Ivs. to 

 distinguish this species 

 from the preceding is 

 found in the cells of the 

 epidermis which are of 

 nearly equal diam. with 

 a dot-like central space 

 in P. syhestris, but in 

 this species are much 

 higher than broad with 

 a dash-like central space. 

 Mts. of Cent. Eu. Gn. 

 30, p. 225. Mn.5,p.49. 

 H.W. 1:5, pp. 140-3. 

 M.D. 1912, pp. 141-8. 

 G.W. l,p. 351. Hand- 

 some hardy low shrub 

 with ascending branches 

 densely clothed with 

 bright green foliage; 

 ornamental as single 

 specimens or for cover- 

 ing rocky slopes and as 

 undergrowth in open 



woods. A very variable species which has been divided 

 according to the cones into the following 3 varieties 

 or subspecies: Var. uncinata, Willk. (including vars. 

 rostrdta and rotundata, Ant., var. arborea, Tubeuf)- 

 Cone very oblique, usually deflexed; apophysis pyram- 

 idal, with often reflexed umbo. Often arborescent. 

 Var. pumilio, Willk. (P. pumilio, Haenke. P. carpdtica, 

 Hort., var. frutescens erecta, Tubeuf). Cone regular, 

 subglobose to ovate, before maturity glaucous and 

 usually violet-purple, ripe yellowish or dark brown. 

 Usually shrubby and upright. Var. Mughus, Willk. 

 (P. Miighus, Scop., var. prostrate, Tubeuf). Fig. 2968. 

 Cone regular, conical or conic-oval, with usually prickly 

 umbos, not bloomy, yellowish brown before ripening, 

 cinnamon-brown when ripe. Usually shrubby and 

 prostrate. Gn. M.2:23. Var. aureo-variegata, Schwerin, 

 has some of Ivs. golden yellow. Var. gracilis, Schwerin, 

 is 'a regular pyramidal form with Ivs, 1-1 M m - long. 

 M.D. 1906, p.' 193. 



27. nigra, Arnold (P. Laricio, Poir.). AUSTRIAN 

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

 spreading branches in regular whorls forming a sym- 

 metrical pyramid, in old age sometimes broad and flat- 

 topped: branchlets usually light brown: buds ovate or 

 oblong-ovate, light brown, resinous: Ivs. stiff, acute, 

 dark green, 3-6 H in- long: cones sessile, ovate, yellow- 

 ish brown, glossy, usually 2-3 % in. long; apophysis 



depressed, conspicuously keeled; 

 umbo flattened, obtuse or with a 

 very short prickle; seeds gray, ^in. 

 long. S. Eu. to W. Asia. Very 

 variable and usually the following 

 geographical varieties are distin- 

 guished: Var. austriaca, Schneid. (P. 

 Laricio var. austriaca, Endl. P. 

 austriaca, Hoss. P. nigricans, Hort.). 

 Fig. 2969. Tall tree, with dark gray 

 bark, broadly ovate head and very 

 dark green, rigid Ivs. 3-4 in. long: 

 branchlets grayish or yellowish 

 297i. Pinus Tada brown. S.E. Eu., from Austria to 

 No. 33. Dalmatia and Rumania. Gn. 19, 



p. 477; 38, p. 113. F.S.R. 3, p. 10. F.E. 18:376 

 (pi. 84). G.W. 15, p. 466, H.W. 1:6, pp. 148-51. 

 Mn. 10, p. 170. R.H. 1894, p. 271. Var. Pallasiina, 

 Schneid. (P. Pattasidna, Lamb.). CRIMEAN PINE. 

 Tall tree, with long and stout branches: lys. dark 

 green and glossy: cones light brown, about 4 in. long. 

 W. Asia. G.C. II. 20:785; 21:481. Var. calabrica, 

 Schneid. (P. Laricio calabrica, Delam.). CALABRIAN 

 PINE. Tall tree, with shorter ascending branches 

 forming a narrower, less dense head: Ivs. of lighter 

 green: branchlets light brown. Italy, Sicily. Var. 

 pindica, Rehd. (P. Laricio pindica, Mast. P. pindica, 

 Formanek). Lvs. pale green, about 5 in. long: cones 

 about 3 in. long with convex apophysis and small 

 obtuse umbo. Thessaly. G.C. III. 31:304. Var.leuco- 

 dermis, Rehd. (P. leucodermis, Ant.). Pyramidal tree: 

 bark light gray, broken into angular plates: Ivs. dark 

 green, 2-4 in. long: cones oblong-ovate, light grayish 

 brown, dull, about 3 in. long. S. E. Eu. H.W. 1, p. 

 158-61. Var. Poiretiana, Schneid. (P. Laricio, Poir. P. 

 Laricio corsicana, Hort.). CORSICAN PINE. Tall tree, to 



2972. Seedlings and young plant of Pinus palustris. No. 34. 



150 ft., with shorter ascending branches forming a nar- 

 rower head: bark gray: branchlets reddish brown: Ivs. 

 lighter green, 4-6 in. long. Corsica. R.H. 1897, pp. 355, 

 357. F.S.R. 1, p. 33. Gn. 27, p. 321; 29, p. 104; 36, p. 

 523; 52, p. 219. G.C. II. 21:15; IH. 4:693, 705. Var. 

 tenuifdlia, Schneid. (P. Laricio tenuifblia, Part. P. 

 Sdlzmannii, Dun. P. monspeliensis, Salzmann. P. 

 pyrenaica, Lapeyr. P. cebennensis, Hort. P. horizon- 

 talis, Hort.). Tree, to 60 ft.: branchlets orange-colored: 

 Ivs. slender, to 6K in. long: cones small, about 2 in. 

 long. Of the horticultural varieties may be mentioned 

 var. pendula, Rehd. (P. Laricio pendida, Beissn.); 

 var. pygmsea, Rehd. (P. Laricio pygmxa, Rauch), a 

 dwarf. dense bushy form; var. prostrata, Rehd. (P. L. 

 prostrata, Beissn.), of prostrate habit, and var. MSseri, 

 Rehd. (P. L. Mbseri, Moser), compact and dwarf, 

 needles turning golden yellow in winter. The var. aus- 

 triaca is hardy N., the others are at least hardy as far 

 north as Mass. They are of rapid growth and conspic- 

 uous by their large, dark green foliage. Var. tenuifolia 



