CATALOGUE OF FOREST TREES. 173' 



321. Populus balsamifera, Linusus, 



Spec. 1 ed. 1034. Du Roi, Harbk. 82. Marshall, Arbnstuni, 107. Wangenheim, Amer. 85, t. 28, f. 59. Aiton, Hort. Kew. iii, 406 ; 2 ed. 

 v, 397. Meencb, Meth. 338. B. S. Barton, Coll. i, 16. Nouveau Dnhamel, ii, 179, t. 50. Michaux, FI. Bor.-Arn. ii, 244. Willdenow, 

 Spec, iv, 805; Enura. 1017; Berl. Baumz. 290. Persoon, Syn. ii, 624. Desfontaines, Hist. Arb. ii, 466. Michaux f. Hist. Arb. Am. 

 iii, 306, t. 13, f . 1 ; N. American Sylva, 3 eel. ii, 172, t. 98, f. 1. Pursh, Fl. Am. Sept, ii, 618. Eaton, Manual, 117; 6 ed. 278. Nuttall, 

 Genera, ii, 239; Sylva, i, 55; 2 ed. i, 70. Hayue, Deud. Fl. 202. Spivn^-l. Syst. ii, 244. Beck, Bot. 322. Lindley, Fl. Med. 320. 

 London, Arboretum, iii, 1637, f. 1535, 1536 & t. Hooker, Fl. Bor.-Am. ii. 153. Eaton & Wright, Bot. 370. Hooker & Arnott, Bot. 

 Beechey, 159. Spach in Ann. Sci. Nat. 2 ser. xv, 3:5 ; Hist. Vi-g. x, :{j:i. Lindley, Bot. Reg. xxix, Misc. 20. Seringe in Fl. des 

 Jard. ii, 65. Torrey, Fl. N. York, ii, 216; Bot. Wilkes Expod. 460. Cooper in Smithsonian Rep. 1858, 257; Am. Nat. iii, 408. 

 Hooker f. in Trans. Linnsean Soc, xxiii-, 301. Wood, Cl. Book, fir.6 ; Bot. & Fl. 311. Gray, Manual N. States, 5 ed. 467. Koch, 

 Dendrologie, ii, 495. Vasey, Cat. Forest Trees, 29. Macoun in Geological Rep. Canada, 1875-'76, 211. Watson iu Am. Jour. Sci. 

 xv, 135. Beal in Am. Nat. xv, 34, f. 4. Trelease in Coulter's Bot. Gazette, vi, 285. Sears in Bull. Essex Inst. xiii, 181. Bell in 

 Geological Rep. Canada, 1879-'80, 45 C . 



P. Tacamahaca, Miller, Diet. 



P. viminea, Bon Jard. 1845, 565. 



P. balsamifera, var. genilina, Wesuisel in De Caudolle, Proflr. xvi' 2 , 329. 



BALSAM. TACAMAHAC. BALM OF GILEAD. 



Straits of Belle Isle to Richmond gulf and cape Churchill, Hudson bay, northwest to the shores of the Great 

 Bear lake and the valley of the Yukon river, Alaska, south to northern New England, .central Michigan and 

 Minnesota, the Rocky mountains and interior ranges of Montana and Idaho, Washington territory, and British 

 Columbia. 



A large tree,18 to 24 meters in height, with a trunk 1.50 to 2.10 meters in diameter; very common on all islands 

 and shores of the northern rivers ; iii British Columbia generally confounded with the allied P. trichocarpa, the range 

 of the two species here still uncertain. 



Wood very light, soft, not strong, close-grained, compact; medullary rays numerous, very obscure; color, 

 brown, the thick sap-wood nearly white; specific gravity, 0.3635 ; ash, O.G6. 



The buds, as well as those of several other species, covered with a resinous exudation, and occasionally used 

 medicinally as a substitute for turpentine and other balms. 



Var. candicans, Gray, 



Manual N. States, 2 ed. 419 ; 5 ed. 467. Cooper iu Smithsonian Rep. 1858, 257. Porter & Coulter, Fl. Colorado ; Hayden's Surv. Misc. 

 Pub. No. 4, 129. Watson in Am. Jour. Sci. 3 ser. xv, 135. Bull. Torrey Bot. Club, vii, 57. Trelease in Coulter's Bot. Gazette, 



vi, 285. 



P. balsamifera lanceolata, Marshall, Arbustum, 108. 



P. candicans, Aitou, Hort. Kew. iii, 406; 2 ed. v. 397.Nouveau Dnhamel, ii, 179. Willdenow, Spec, iv, 806; Enum. 1017; 

 Berl. Baumz. 291. Persoon, Syn. ii, 624. Michaux f. Hist. Arb. Am. iii, 308, t. 13, f. 2; N. American Sylva, 3 ed. ii, 

 173, t. 98, f. 2. Pursh, Fl. Am. Sept, ii, 618. Barton, Prodr. Fl. Philadelph. 96. Poiret, Suppl. iv, 378. Nnttall, Genera, 

 ii, 239. Hayne, Deud. Fl. 202. Sprougel, Syst, ii, 244. Torrey, Compeud. Fl. N. States, 375 ; Fl. N. York, ii,217. 

 Audubon, Birds, t. 59. Beck, Bot, 332. Eaton, Manual, 6 ed. 278. Loudon, Arboretum, ii, 1676, f. 1537. Hooker, Fl. 

 Bor.-Am. ii, 154. Eaton & Wright, Bot. 370. Bigelow. Fl. Boston. 3 ed. 398. Spach in Ann. Sci. Nat. 2 ser. xv, 33; 

 Hist, Veg. x, 392. Lindley, Bot. Reg. xxix, Misc. 22. Emerson, Trees Massachusetts, 245; 2 ed. i, 281. Seringe in 

 Fl. des Jard. ii, 63. Gray, Manual N. States, 1 ed. 431. Wood, Cl. Book, 656; Bot. & Fl. 311. Wesmsel in De 

 Candolle, Prodr. xvi 2 , 330. 



P. Canadensis, Ma-nch, Weiss. 81 [not Michaux f.]. 



P. latifolia, Mccnch, Meth. 338. 



P. Ontarietisis, Hort. Loddiges, Cat. 1836. 



P. macrophylla, Lindley in London, Encyc. PI. 840. 



P. acladesca and P. heterophylla, Hort. (ex. Koch, Wachen. 1865, 238). 



A large tree, rare or unknown in a wild state ; very common in cultivation. 

 The wood heavier than that of the species; specific gravity, 0.4161 ; ash, 0.46. 



