STANDLEY TREES AND SHRUBS OF MEXICO. 55 



9. Pinus lambertiana Dougl. Trans. Linn. Soc. Bot. 15: 500. 1827. 



San Pedro Martir Mountains of Baja California, at elevations of 2,250 meters 

 or more. Northward to Oregon ; type from the Umpqua River. 



The largest of North American pines (probably of all pines), in the northern 

 part of its range sometimes attaining a height of 70 meters and a trunk diameter 

 of 4 meters, trees of still larger dimensions having been reported ; bark brown or 

 red-brown, fissured into long plates, on young trees smooth ; cones pendulous ; 

 seeds broadly winged ; wood light brown, soft, its specific gravity about 0.37. 



In the United States (where the tree is known as sugar pine) the wood is 

 used for shingles, barrels, general construction, etc. 



10. Pinus reflexa Engelm. Bot. Gaz. 7: 4. 1882. 



Pinus flexilis reflexa Engelm. ; Rothr. in Wheeler, Rep. U. S. Surv. 100th 

 Merid. 6: 258. 1878. 



Mountains of northern Chihuahua. Arizona (type from Santa Rita Moun- 

 tains) and New Mexico. 



Tree, sometimes 30 meters high and with a trunk diameter of 60 cm., the 

 branches slender and somewhat drooping ; bark brown or reddish brown, deeply 

 fissured ; leaves light green ; wood hard, strong, reddish white, its specific 

 gravity about 0.49. 



11. Pinus leiophylla Schlecht. & Cham. Linnaea 6: 354. 1831. 

 Zacatecas to Veracruz and Oaxaca ; type from Michoac5,n. 



Tree, 15 to 27 meters high ; bark thin, at first, red, soon becoming very coarse 

 and rough ; leaves 10 to 14 cm. long, grayish green ; cones maturing the third 

 year, 7 cm. long or shorter, ijersistent. The names " ocote bianco " and " ocote 

 chino " are said to be applied to this species. 



12. Pinus chihuahuana Engelm. in Wisliz. Mem. North. Mex. 103. 1848. 

 Chihuahua to Zacatecas and Tepic ; type from mountains of Chihuahua. 



Southern Arizona and New Mexico. 



Tree, sometimes 20 meters high, with a trunk 90 cm. in diameter ; bark 

 thick, dark reddish or nearly black, deeply fissured into broad flat ridges ; 

 leaves 6 to 10 cm. long, pale green ; cones 4 to 6 cm. long, ripening the third 

 year, brown and shining; wood soft and brittle but durable, close-grained, 

 orange, its specific gravity about 0.54. 



13. Pinus lumholtzii^ Robins. & Fern. Proc. Amer. Acad. 30: 122. 1894. 



In the mountains, Chihuahua to Zacatecas and Tepic ; type from Coloradas, 

 Chihuahua. 



Tree with broad rounded crown and slender, somewhat pendent branches; 

 bark at first thin, separating into deciduous scales, in age coarse and thick; 

 leaves 20 to 30 cm. long, bright green, pendent ; cones pendent, dull pale brown. 

 " Pino triste." 



A decoction of the leaves is employed by the Indians for stomacb troubles. 

 The wood is used for musical instruments, and for other purposes. 



14. Pinus teocote Schlecht. & Cham. Linnaea 5: 76. 1830. 

 Pinus teocote macrocarpa Shaw, Pines Mex. 17. 1909. 

 Nuevo Leon to Tepic and Chiapas ; type from Mount Orizaba. 



Tree, 20 to 35 meters high ; bark at first thin, red, deciduous, in age thick 

 and rough; leaves 10 to 20 cm. long; cones spreading or reflexed, brown or 



^ Named for Carl Lumholtz (1851-), a native of Norway, who has con- 

 ducted extensive investigations of the ethnological features of Mexico, especially 

 in the northern ranges of the Sierra Madre. Upon some of his expeditions 

 botanical collections were obtained. 



