STANDLEY — TREES AND SHRUBS OF MEXICO. 115 



Yucatan or Honduras ?; what appears to be this, also, from Cainpeche (v. 

 Christman\, in the Berlin herbarium; type cultivated in Europe from the 

 island of St. Helena, where, as everywhere in warm countries, it is planted. 



Subcaulescent ; leaves gray-green, 8 cm. wide, 40 to 65 cm. long, with red- 

 brown ungrooved spine 4 mm. mde and 25 to 40 mm. long, and dark, variously 

 bent, very slender teeth 20 to 25 mm. apart and 3 to 5 mm. long. 



5. Agave bergeri Trel. ; Berger, Agaven 250. 1915. 



Leaves gi-ay-green, granular-roughened, about 8 cm. wide and 100 cm. long, 

 with red-chestnut or graying, half-round, rough spine 5 to 6 mm. wide and 20 to 

 25 mm. long, and red or black, hooked, very slender teeth 15 to 25 mm. apart 

 and 5 mm. long ; inflorescence 5 meters tall ; flowers 60 mm. long, green- 

 yellow, with segments twice as long as the tube ; capsules 30 mm. broad and 

 60 mm. long, somewhat stipitate and beaked ; seeds 8 mm. wide and 12 mm. 

 long; biilbiferous. 



Region ? ; type, in the herbarium of the Missouri Botanical Garden, culti- 

 vated in Europe as A. rigida, Berger, in 1908. 



6. Agave lespinassei Trel. Trans. Acad. St. Louis 18: 33. 1909. 

 Veracruz ; type from Tuxpan. 



Acaulescent ; leaves yellow-green, 6 to 7 cm. wide, 150 cm. long, with red- 

 brown spine 5 to 6 mm. wide and 30 to 35 mm. long, and very slender, mostly 

 upcurved, red-brown teeth 15 to 20 mm. apart and 1 to 2 mm. long, the inter- 

 vening cartilaginous margin somewhat hollowed. " Zapupe de Tepezintla," 

 " zapupe de Vincent." 



7. Agave endlichiana Trel. Trans. Acad. St. Louis 18: 34. 1909. 

 Veracruz ; type from Huatusco. 



Acaulescent ; leaves green, transiently glaucous, 5 to 9 cm. wide, 80 to 125 cm. 

 long, with a garnet or chestnut spine 4 to 5 mm. wide and 15 to 30 mm. long, 

 and heavy, upcurved, garnet or chestnut teeth 10 to 30 mm. apart and 3 mm. 

 long, the intervening translucent margin nearly straight. " Ixtle," " ixtle 

 manso." 



8. Agave aboriginum Trel. Trans. Acad. St. Louis 18: 34. 1909. 

 Veracruz ; type from Tuxpan. 



Acaulescent ; leaves yellow-green, somewhat gray, 5 to 11 cm. wide, 70 to 

 150 cm. long, with brown, somewhat decurrent spine 4 mm. wide and 35 to 

 50 mm. long, and heavy upcurved teeth 20 to 35 mm. apart and 5 to 8 mm. 

 long sometimes with intercalated smaller ones, the intervening margin nearly 

 straight. " Zapupe silvestre," " zapupe cimarron," " zapupe de Sierra Chontla " ; 

 " wild zapupe." 



9. Agave deweyana^ Trel. Trans. Acad. St. Louis 18: 35. 1909. 

 Tamaulipas and Veracruz; type from Victoria, Tamaulipas. 

 Acaulescent; leaves yellow-green, somewhat transiently glaucous, 5 to 10 cm. 



wide, 150 cm. long, with brown or purplish spine 3 to 4 mm. wide and 15 to 

 40 mm. long, and slender upcurved teeth 15 to 45 mm. apart and 2 to 3 mm. 

 long. " Zapupe de Tantoyuca," " zapupe de Huatusco," " zapupe verde " ; 

 " green zapupe." 



10. Agave zapupe Trel. Trans. Acad. St. Louis 18: 32. 1909. 

 Veracruz ; type from Tuxpan. 



Acaulescent ; leaves dark green but glaucous, 8 to 10 cm. wide, 150 to 200 

 cm. long, with red-brown or blackening spine 4 mm. wide and 15 to 25 mm. 



^ Named for L. H. Dewey (1865-), of the U. S. Department of Agricul- 

 ture, well known for his work upon the fiber plants of Mexico and other regions. 



