STANDLEY TREES AND SHEUBS OF MEXICO. 123 



the filaments inserted in its throat ; capsules 25 mm. broad and 50 mm. long, 

 stipitate but scarcely beaked ; seeds 7 mm. wide and 10 mm. long. 



San Luis PotosI; type, in the herbarium of the Missouri Botanical Garden, 

 from Rascou, Treleose 75. 

 54. Agave vera-cruz Mill. Gard. Diet. ed. 8. Agave no. 7. 1768. 



Agave mexicana and Agave theometel of authors. 



Veracruz (?) ; type cultivated in Europe, nominally from that region; also 

 established in Peru. Extensively planted about the Mediterranean, and culti- 

 vated as " blue aloe " in Mauritius, Amoy, and India. 



Leaves glaucous, rather fleshy and straight, 15 to 17 cm. wide, 150 cm. long, 

 with short stout gray spine 5 to 6 mm. wide and 20 to 25 mm. long, and deltoid 

 teeth on low fleshy prominences. 



35. Agave verschafEeltii Lem. in Verschafeelt, Cat. 1866-7, f.; 111. Hort. 15: 

 pi. 56-i. 1868. 



Puebla ; type cultivated in Europe, pretty clearly from about Tehuaciin. 



Leaves glaucous, 7 cm. wide, 15 to 17 cm. long, obovate-oblong, acuminate, 

 with twisted light brown spine and long rust-brown teeth on very high fleshy 

 prominences. " Papalometl." 



A beautiful polymorphic small species, at one time popular in European 

 gardens under distinctive varietal names, of which over 30 have been listed — 

 one of the introducers advertising as many varieties as there are plants. 

 Among the names preoccupied by these as specific are A. albida, A. amoena, 

 A. auricantha, A. hedinghausii, A. bonneti, A. cochleuta, A. crenata, A. croucheri, 

 A. cucuUata, A. clegans, A. imbricata, A. leopoldi, A. proUfera, A. jmlverulenta, 

 A. quadreta, A. rotundifolia, A. sanndersii, A. serrata, A. scrrulata, A. simsii, 

 A. streptacaiitha, and A. tehuacanensis. 



56. Agave megalacantha Hemsl. Diag. PI. Mex. 55. 1880. 

 Valley of Mexico; type from the lava fields. 



Leaves gray, short-obovate, acuminate, 10 cm. wide, 15 to 20 cm. long, with 

 brown or gray spine 5 mm. wide and 40 mm. long, and rather stout, mostly 

 upcurved teeth about 20 mm. apart and 5 mm. long, these from very high fleshy 

 prominences. 



57. Agave guadalajarana Trel., sp. nov. 



Leaves dull and pale but scarcely glaucous, cuneate-obovate, rather obtuse, 

 8 cm. wide and 12 cm. long, with red-chestnut curved spine 3 mm. wide «ind 

 25 mm. long, and triangular teeth, the upper ones 7 mm. long and from high 

 fleshy prominences; inflorescence panicled, with short, more or less connate 

 pedicels ; flowers 60 mm. long, the perianth segments equaling or shorter than 

 the tube ; capsules stipitate and beaked, 15 to 20 mm. wide, 35 mm. long. 



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

 Guadalajara, Pringle 4473. v 



58. Agave potatorum Zucc. Act. Acad. Caes. Leop. Carol. 16^: 675. 1833. 

 Puebla; type cultivated in Europe (from about Tehuacan ?). 



Leaves oblanceolate, acute, 8 to 10 cm. wide, 30 to 40 cm. long, with straight, 

 dull brown spine, and rather small teeth on low fleshy prominences, gray in 

 the typical form, and green in that which has been called A. scoJyiHiis Karw. 

 (in Salm-Dyck, Hort. Dyck. 307. 1834). 



59. Agave mescal Koch, Wochenschr. Ver. Beford. Gartenb. 8: 94. 1865. 

 Agave hookeri Jacobi, Hamb. Gart. Zeit. 22: 168. 1866. 



Michoacan (type locality about Tejulpico on the Balsas River ?), Sinaloa, 

 and Sonora. 



126651—20 9 



