STANDLEY — TREES AND SHRUBS OF MEXICO. 63 



Oue tree measured by Palmer had a trunk 2 meters in circumference, with 236 

 annual rings. 



3. Cupressus arizonica Greene, Bull. Torrey Club 9: 64. 1882. 



Coahuila to San Luis Potosi, Zacatecas, and Baja California. Arizona (type 

 locality) and New Mexico. 



Shrub or tree, sometimes 21 meters high, with a trunk diameter of 1.2 meters ; 

 old bark thin, dark red or brown, separating into long shreds ; cones reddish 

 brown, glaucous ; wood soft, close-grained, grayish, streaked with yellow, its 

 specific gravity about 0.48. " Cedro," " cedro de la sierra," " pinabete " (Du- 

 rango). 



The wood is used for fuel and for general construction purposes. 



4. Cupressus benthamii ^ Endl. Syn. Conif. 59. 1847. 



? Cupressus coulteri J. Forbes, Pinet. Woburn. 190. 1839. 



Cupressus lindleyi Klotzsch ; Endl. Syn. Conif, 59. 1847. 



Cupressus ehrenbergii Kimze, Linnaea 20: 16. 1847. 



Cupresstis kancinskiana Regel, Gartenflora 1857: 346. 1857. 



Cupressus knightiana Perry ; Gord. & Glend. Pinet. 61. 1858. 



Tepic to Veracruz and southward ; ascending to 3,000 meters ; type from 

 Banco. Guatemala to Costa Rica. 



Tree, often 18 to 30 meters high. "Cedro bianco" (Oaxaca, etc.) ; " cipres " 

 (Veracruz); "cedro" (Jalisco); " cipr6s de Mexico" (Veracruz, etc.); " gre- 

 tado gaian " (Oaxaca, Reko) ; " tlascal," " tlascale " (Veracruz Michoacan, 

 Mexico, etc.) ; " tlazzcan " (Guerrero, Hidalgo, Veracruz) ; " teatlale " (various 

 localities, Ramirez) . 



The wood is undoubtedly of importance for lumber, although no details con 

 cerning it are available. The bark is said to be used in medicine as an 

 astringent. 



7. LIBOCEDRUS Endl. Syn. Conif. 42. 1847. 

 1. Libocedrus decurrens Torr. in Frem. Rep. Exped. Rocky Mount. 7. pi. 3. 

 1854. 



Mountains of Baja California, at altitudes of 2,100 to 2,400 meters. Califor- 

 nia and Oregon ; type from the Sacramento River. 



Tree, sometimes 45 meters high, with irregularly furrowed, reddish brown 

 bark ; leaves in whorls of 4, scalelike, decurrent ; cones oblong, 1.8 to 2.5 cm. 

 long, reddish brown; wood soft, weak, close-grained, light reddish brown, the 

 specific gravity about 0.40. 



Known in the United States as incense cedar, a name applied because of the 

 fact that all parts of the tree contain a volatile oil with a characteristic 

 incen.se-like odor. The wood is very durable and is used for general construc- 

 tion, laths, shingles, interior finish, etc. The bark is rich in tannin. 



6. GNETACEAE. Joint-fir Family. 



1. EPHEDRA L. Sp. PI. 1040. 1753. 

 Shrubs, erect or rarely subscandent or trailing over other shrubs; stems 

 slender, jointed ; leaves reduced to opposite or verticillate scales ; flowers 

 dioecious, the staminate in short aments, the fertile inflorescence conelike; 

 fruit nutlike, angled, sometimes fleshy. * 



^ Named in honor of George Bentham (1800-1884), one of the most noted of 

 British botanists. He was the author of many important botanical works, one 

 of which was a report upon the Mexican collections obtained by Hartweg. 



