107 2 The Trees of Great Britain and Ireland 



4 to 5 in. long, narrow in proportion to their length. The leaves are variable in 

 size, and average 6 or 7 in. long. 



2. Var. scopulorum, Engelmann, in Brewer and Watson, Bot. Calif, ii. 126 



(1880). 



Pinus ponderosa, Engelmann, in Amer.Journ. Set. Arts, xxxiv. 332 (1862) (not Lawson) ; Hooker, 



in Gard. Chron. ix. 796, fig. 138 (1878). 

 Pinus scopulorum, Lemmon, in Garden and Forest, x. 183 (1897); Mayr, Fremdldnd. Wald- u. 

 Parkbdume, 370 (1906). 



Usually 50 to 75, occasionally 150 ft. in length, and 4 ft. in diameter. Bark 

 dark and furrowed, or bright red broken into large plates. Leaves in clusters of 

 both twos and threes, 3 to 6 in. long. Cones, in clusters of two, ovoid-conic, 

 smaller than in the type, about 3 in. long. This variety occurs in the Rocky 

 Mountains and eastward, in eastern Montana, Nebraska, Dakota,^ Colorado, western 

 Texas, northern New Mexico, and Arizona. 



3. W2iV. Jeffreyi, Vasey, U.S. Rep. Dept. Agric. 179 (1875); Sargent, Silva N. 

 Amer. xi. 79, tt. 562, 563 (1897), and Trees N. Amer. 16 (1905); Kent, Veitch's 

 Man. ConifercB, 364 (1900) ; Shaw, Pines of Mexico, 24 (1900). 



Pinus Jeffreyi, Balfour, Bot Exped. Oregon, 2, fig. (1853); Lawson, Pin. Brit. i. 45, 

 t. 6 (1884) ; Masters, in Gard. Chron. v. 360, fig. 65 (1889); Clinton-Baker, Ulust Conif. 

 i. 27 (1909); Hemsley, in Bot. Mag. t 8257 (1909). 



Pinus deflexa, Torrey, in Emory, Rep. Mex. Bound. 209 (1858); Murray, in Gard. Chron. 

 iv. 29s, fig. 65 (1875). 



Attaining 1 50 to 200 ft. in height, and 20 ft. in girth. Bark bright red, divided 

 into large irregular scaly plates. Young branchlets glaucous, exhaling, when cut, 

 an aromatic odour like that of lemon. Buds reddish brown, non-resinous, and 

 with the points of the scales free. Cones ellipsoid, very large, 5 to 1 2 in. long, short- 

 stalked, with either stout or slender recurved prickles. Seeds often \ in. long, with 

 long wings. This variety occurs in the Sierra Nevada, San Bernardino, San Jacinto, 

 and Cuyamaca mountains in California, and on the San Pedro Martir mountain in 

 Lower California. 



4. Var. Mayriana, Sargent, Silva N. Amer. xi. 81 (1897). 



Pinus latifolia, Sargent, in Garden and Forest, ii. 496, fig. 135 (1889); Brandegee, in Garden 



and Forest, v. iii (1892); Koehne, Deut. Dendr. 36 (1893). 

 Pinus Engelmanni, Lemmon, in Erythea, i. 134 (1893) (not Torrey or Carribre). 

 Pinus Mayriana, Sudworth, U.S. Forestry Bull. No. 14, p. 21 (1897); Mayr, Fremdldnd. Wald- 



u. Parkbdume, 367 (1906). 



Leaves very long and stout, 14 to 15 in. long, ^ in. broad. Cones very 

 oblique ; scales with projecting knobbed umbos, armed with sharp prickles. 



This variety,^ said to be a tree about 80 ft. high, was discovered on the southern 

 slope of the Santa Rita mountains in Arizona by Mayr in 1887. 



1 Cf. Graves, Black Hills Forest Reserve, published in U.S. Geol. Survey, 1897-98, pt. v. Forest Reserves (1899). 



2 Tourney, in Garden and Forest, viii. 22, fig. 4 (1895), figures this tree, or a similar form, on Mount Chiricahui, in 

 south-eastern Arizona, and believes that all the varieties of P. ponderosa occur there, gradually passing into one another. 

 Lemmon, in Erythea, ii. 103, fig. 3 (1894), describes and figures the Chiricahui pine as P. apacheca. 



