116 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



long, and slender upcurved teeth 15 to 30 mm. apart and 2 to 3 mm. long. 

 " Zapupe azul," " zapupe de Estopier," " zapupe de San Bernardo " ; " blue 

 zapupe." 



11. Agave subtilis Trel., sp. nov. 



Leaves ascending, glaucous, 10 ^to 15 cm. wide, 150 cm. long, with an acuminate 

 gray spine 5 mm. wide and 25 mm. long, this flattened to the middle, and with 

 rather slender-cusped, mostly upcurved teeth 20 to 50 mm. apart and 4 to 5 

 mm. long. 



.Jalisco ; type, in the herbarium of the Missouri Botanical Garden, from 

 Tequila, Griffiths H, in 1909. 



" Chato " ; a good mezcal species. 



12. Ag-ave longisepala Tod. Hort. Panorm. 2: 34. 1891. 



Jalisco (?) ; type cultivated in Europe; cultivated for mezcal at Tequila as 

 " mezcal grande." 



Leaves spreading, gray-green, 15 to 20 cm. wide, 200 cm. long, with a large 

 conical or acuminate, flat-based, chestnut spine often 10 mm. wide and 25 mm. 

 long, and with deltoid teeth 30 to 50 mm. apart and 5 to 10 mm. long, the 

 prevailingly upcurved cusps often suppressed ; flowers 70 mm. long, with short 

 tube, the segments 30 mm. long. 



13. Agave pedrosana Trel., sp. nov. 



■ I>eaves green, lightly glaucous, 10 to 15 cm. wide, 100 to 150 cm. long, with 

 flexuous heavy flat-based chestnut spine about 10 mm. wide and 30 nnu. long, 

 and with slender upcurved teeth 30 to 60 mm. apart and 2 to 4 mm. long. 



.lalisco; type, in the herbarium of the Missouri Botanical Garden, collected 

 at San Pedro, near Guadalajara, Trelease, in 1903. 



14. Agave gutierreziana Trel., sp. nov. 



Jjeaves green, about 15 cm. wide and 200 cm. long, with a rather small 

 subulate ungrooved graying spine scarcely 5 mm. wide and 20 mm. long, and 

 with slender, sharply upcurved teeth 10 to 25 mm. apart and 5 to 6 mm. long. 



Chiapas ; type, in the herbarium of the Missouri Botanical Garden, from 

 Tuxtla Gutierrez, Gutierrez, in 1908. 



" Magueyon." 



15. Agave elongata Jacobi, Hamb. Gart. Zeit. 20: 501. 1864. 

 Af/ave spectabilis Tod. Hort. Panorm. 2: 4. 1879. 



Region ? ; type cultivated in Europe. 

 . Leaves spreading, gray-glaucous, 10 to 13 cm. wide, 200 cm. long, with 

 rather attenuate, chestnut or graying, flat-based spine 5 to 6 mm. wide and 20 

 to 30 mm. long, and slender, mostly upcurved teeth 10 to 15 mm. apart and 5 

 nnu. long. 



16. Agave collina Greenm. Proc. Amer. Acad. 32: 296. 1897. 

 Morelos ; type collected above Cuernavaca. 



Acaulescent ; leaves glaucous, somewhat green-banded across the back, 5 to 8 

 cm. wide, 75 cm. long, with red-brown or purplish brown spine 3 to 5 mm. wide 

 and 20 to 30 mm. long, and rather heavy, upcurved, blackish toeth 10 to 25 nun. 

 apart and 3 to 5 mm. long, the yellowish margin nearly straight betAveen them. 



17. Agave palmaris Trel., sp. nov. 



Leaves ascending, gray, more or less glaucous, 10 to 15 cm. wide, 150 cm. 

 lung, with recurve<l, red or graying spine 4 mm. wide and 15 mm. long, and 

 mostly upcurved, slender teeth 20 to 30 nnu. apart and 5 mm. long. 



Jalisco ; type, in the herbarium of the Missouri Botanical Garden, from Mazete- 

 pec, Detoeij 657. 



