CATALOGUE OF FOREST TREES. 73 



119. Pyrus rivularis, Douglas ; 



Hooker, Fl. Bor.-Am. i, 203, t. 68. Don, Miller's Diet, ii, 647. Torrey & Gray, Fl. N.America, i, 471. Eaton & Wright, Bot. 383. 

 Walpers, Eep. ii, 53. Dietrich, Syn. iii, 154. Lcdebour, Fl. Rossica, ii, 99. Nuttall, Sylva, ii, 22, t.49; 2ed. i, 172, t. 49. Richardson, 

 Arctic Exped. 428. Torrey in Pacific R. R. Rep. iv, 85; Bot. Wilkes Exped. 292. Newberry iu Pacific R. R. Rep. vi, 73. Cooper 

 in Smithsonian Rep. 1858, '259 ; Pacific R. R. Rep. xii, 29, 60. Rothrock in Smithsonian Rep. 1867, 435, 446. Koch, Dendrologie, 

 i, 212. Gray in Proc. Am. Acad. viii, 382. Wenzig iu Linnsea, xxxviii, 38. Brewer & Watson, Bot. California, i, 188. Vasey, 

 Cat. Forest Trees, 14. Hall in Coulter's Bot. Gazette, ii, 87. Macouii in Geological Rep. Canada, 1875-76, 195. Dawson in 



Canadian Nat. new ser. ix, 330. 



P. diversifoUa, Bougard in Mem. Acad. Sci. St. Petersburg, 6 ser. ii, 133. 



P.fuSCtt, Rafinesque, Med. Bot. ii,254. 



P. subcordata, Ledebonr, Fl. Rossica, ii, 95. 



Mdlus rivularis, Roemer, Syn. Mon. iii, 215. Decaisno in Nouv. Arch. Mus. x, 155. 



Malus diversifoUa, Rcemer, Syn. Mon. iii, 215. Decaisne in Nouv. Arch. Mus. x, 155. 



Mai us Subcordata, Roemer, Syn. Mon. iii, 192. 



OREGON CRAB APPLE. 



Coast of Alaska, southward along the coast and islands of British Columbia, through Washington territory 

 and Oregon, west of the Cascade mountains, to Sonoma county, California. 



A small tree, sometimes 9 meters in height, with a trunk 0.30 to 0.45 meter in diameter ; rich, low woods, 

 generally along streams, often forming dense thickets. 



Wood heavy, hard, very close-grained, liable to check badly in drying, susceptible of a beautiful polish; 

 medullary rays numerous, obscure; color, light brown tinged with red, the sap-wood lighter; specific gravity, 

 0.8316; ash, 0.41; used for mallets, mauls, bearings of machinery, etc. 



The small, black, pleasantly acid fruit occasionally used as a preserve, and prized by the Indians as food. 



120. Pyrus Americana, De Candolle, 



Prodr. ii, 637. Watson, Dend. Brit. i. t. 54. Sprengel, Syst. ii, 511. Hooker, Fl. Bor.-Am. i, 204. Don, Miller's Diet, ii, 648. Beck, 

 Bot. 113. Audubou, Birds, t. 363. Torrey & Gray, Fl. N. America, i, 472. London, Arboretum, iii, 920 & t. Eaton & Wright, 

 Bot. 383. Torrey, Fl. N. York, i, 224. Dietrich, Syn. iii, 155. Nuttall, Sylva, ii, 25, t. 50; 2 ed. i, 175, t. 50. Browne, Trees of 

 America, 326. Emerson, Trees Massachusetts, 439 ; 2 ed. ii, 499. Parry iu Owen's Rep. 612. Richardson, Arctic Exped. 428. 

 Lange, PI. Greenl. 134. Cooper in Smithsonian Rep. 1858, 252. Chapman, Fl. S. States, 129. Curtis in Rep. Geological Surv. 

 N. Carolina, 1860, iii, 70. Wood, Cl. Book, 333; Bot. & Fl. 112. Porcher, Resources S. Forests, 168. Gray, Manual N. States, 

 5 ed. 161. Koch, Dendrologie, i, 190. Brewer & Watson, Bot. California, i, 189. Vasey, Cat. Forest Trees, 14. Macoun in. 

 Geological Rep. Canada, 1875-'76, 195. Sears in Bull. Essex Inst. xiii, 176. Bell iii Geological Rep. Canada, 1879-'80, 54. 



Sorbus Americana, Marshall, Arbustum, 145. Willdenow, Euum. 520. Pursh, Fl. Am. Sept. i, 341. Poiret, Suppl. v, 

 164. Eaton, Manual, 55 ; 6 ed. 351. Nuttall, Genera, i, 305. Hayrie, Dend. Fl. 75. Torrey, Fl .17. S. 477 ; Compend. 

 Fl. N. States, 202. Spach, Hist. Veg. ii , 95. Bigelow, Fl. Boston. 3 ed. 207. Rosmer, Syn. Mon. iii, 138. Maximo wicz 

 in Bull. Acad. St. Petersburg, xix, 174. Wenzig in Linnsea, xxxviii, 71. Decaisne in Nouv. Arch. Mus. x, 158. 



SorbltS aucuparia, Poiret in Lamarck, Diet, vii, 234, in part. Bigelow, Fl. Boston. 1. ed. 119. Decaisne in Nouv. Arch. Mus. 

 . x, 158, in part. 



Sorbus aucuparia, var. Americana, Persoon, Syn. ii, 38 & addend. 



P. aucuparia, Meyer, PI. Labrador, 81, in part. Sehlechtendal in Linnaea, x, 99. Hooker f. in Trans. Linnxan Soo. xxii',. 

 290, 327, in part. 



Sorbus humifusa, Rafinesque, Med. Bot. ii, 265. 



MOUNTAIN ASH. 



Greenland?, Labrador, Newfoundland, Anticosti island, and westward along the southern shore of James' bay 

 to the valley of the Nelson river (White Mud falls), southward through all mountainous regions of the northeastern 

 states, and along the high mountains of Virginia and North Carolina; in northern Michigan, Wisconsin, and 

 Minnesota. 



A small tree, 6 to 9 meters in height, with a trunk 0.30 to 0.45 meter in diameter ; borders of swamps and in 

 moist, rocky woods, reaching its greatest development on the northern shores of lakes Huron and Superior. 



