CATALOGUE OF FOREST TREES. 71 



115. Cercocarpus ledifolius, Nuttall; 



Torrey & Gray, Fl. N. America, i, 427. Hooker, Icon. t. 324. Nuttall, Sylva, li, 28,t.51; 2 ed. i, 178, t. 51. Walpers, Eep. ii,46.- 

 Dietrich, Syu. iii, 119. "Watson in King's Eejj. v, 83, 420; PI. "Wheeler, 8. Porter in Hayden's Eep. 1871, 481.- Coulter in 

 Hayden's Eep. 1872,765. Parry in Am. Nat. ix, 201, 270; Proc. Davenport Acad, i, 146. Engelmann in Simpson's Eep. 43.5. 

 Brewer & "Watson, Bot. California, i, 174. "Vasey, Cat. Forest Trees, 13. Sargent in Am. Jour. Sci. 3 scr. xvii, 421. Eothrock in 

 Wheeler's Eep. vi, 43, 111, 360. 



MOUNTAIN ITAHOGANT. 



Coeur d'Alene mountains, Idaho, southward along the western slopes of the Eocky mountains of Montana and 

 "Wyoming ; eastern extremities of the Blue mountains of Washington territory and Oregon, Wahsatch mountains, 

 Utah, and west along the mountain ranges of the Great Basin to the western slope of the Sierra Nevada of 

 California, extending southward into Arizona and New Mexico. 



A small, low tree, rarely 12 meters in height, with a trunk sometimes 0.60 to 0.90 meter in diameter, or north 

 of Utah and Nevada reduced to a low shrub ; dry, rocky mountain slopes, between 6,000 and 8,000 feet elevation, 

 reaching its greatest development on th6 high ranges of central Nevada. 



A shrubby variety of the Wahatch mountain and other ranges of Utah, characterized by its rigid, intricately 

 branched growth, short, revolute leaves and smaller flowers and fruit, is 



var. intricatUS, M. E. .Jones in herb. 



' 9 



C. intricatUS, "Watson in Proc. Am. Acad, x, 346. Parry in Am. Nat. ix, 270; Proc. Davenport Acad, i, 147. 



G. brevifoKus, Watson in King's Eep. v, 83 [not Gray]. 



Wood very heavy, hard, close-grained, compact, brittle, difiicult to work, susceptible of a beautiful polish; 

 medullary rays very numerous, thin ; color, bright, clear red, or often rich dark brown, the sap-wood clear yellow; 

 specific gravity, 1.0731 ; ash, 1.04 ; furnishing the most valuable fuel of the region, and largely manufactured into 

 charcoal. 



116. Cercocarpus parvifolius, Nuttall; 



Hooker & Arnott, Bot. Beechey, 337. Torrey & Gray, Fl. N. America, i, 427; Pacific E. E. Eep. ii, 164. Hooker, Icon. t. 323. Walpers, 

 Eep. ii, 45. Torrey in Fremont's Eep. 89 ; Emory's Rep. 139; Sitgreaves' Rep. 158 ; Pacific R. R. Rep. iv,83; Bot. Mex. Boundary 

 Survey, 63; Bot. Wilkes Exped.287. Dietrich, Syn.iii,119. Gray in Mem. Am. Acad, new ser. iv\ 41; Smithsonian Contrib. iii, 

 68; v, 54; Proc. Boston Soc. Nat. Hist. vii,146; Am. Jour. Sci. 2 ser. xxxiii, 411; Proc. Philadelphia Acad. 1863, 61. Engelmann 

 in Trans. Am. Phil. Soc. new ser. xii, 190. Bolauder in Proc. California Acail. iii, 79. Porter in Hayden's Rep. 1870, 475; 1871, 

 481. Watson in King's Rep. v, 82. Porter & Conltcr, Fl. Colorado ; Hayden's Siirv. Misc. Pub. No. 4, 34. Eothrock, PI. Wheeler, 

 37 ; "Wheeler's Eep. vi, 111, 359. Brewer Sc Watson, Bot. California, i, 174 ; ii, 444. "Vasey, Cat. Forest Trees, 13. M. E. Jones, 

 Excnr. Bot. 12, 15, 20. 21. Hemsley, Bot. Am. -Cent, i, 374. Watson in Proc. Am. Acad, xvii, 353. 



MOUNTAIN MAHOGANY. 



California, valley of the Klamath river, southward through the Coast ranges to the San Bernardino and San 

 Jacinto mountains, and in Lower California ; Rocky mountains of Wyoming, Colorado, and New Mexico, mountains 

 of southern Arizona, and southward into Sonora. 



A small tree, rarely 6 to 9 meters in height, with a trunk sometimes 0.30 meter in diameter, or more often a 

 shiaib ; dry, gravelly soil, reaching its greatest development on the mountains of southern New Mexico and Arizona, 

 at an elevation of 6,000 to 8,000 feet. 



A glabrous variety of southern California, with dark green leaves, is 



var. glaber, Watson, Bot. California, i,175. 



C. betulw/olius, Nuttall in Hooker, Icon. t. 322. Walpers, Rep. ii,46. 



G. betuloides, Nuttall in Torrey & Gray, Fl.N. America, i, 427. Hooker in London Jour. Bot. vi,218. 



A form with small entire or sparingly toothed leaves, of northern Mexico, is 



var. paucidentatUS, Watson iu Proc. Am. Acad, xvii, 353. 



Wood very heavy, hard, close-grained, compact, difficult to work, susceptible of a beautiful polish ; medullary 

 rays numerous, thin ; color, bright reddish-brown, the sap-wood light brown; specific gravitj', 0.9365; ash, 0.46; 

 famishing valuable fuel. 



