92 CONTRIBUTIONS FROM THE NATIONAL, HERBARIUM. 



Trunk slender, branched or nearly simple, short ; leaves distributed along the 

 stem, flat, rigid, brown-pointed ; flowers creamy white, tinged with green or 

 purple near the base; fruit baccate, nearly h\acK with purplish black pulp. 

 Ramirez gives the common names as " iczotli " and " izote." 



A form with clustered trunks sometimes 7 meters high, and with tomentose 

 inflorescence, is var. yucntana (Engelm.) Trel. (Rep. Mo. Bot. Gard. 13: 93. 

 1902; Y. pticatana Engelm. Trans. Acad. St. Louis 3: 37. 1873). It is known 

 only from Yucatftn. 



7. Yucca elephantipes Regel, Gartenflora 8: 35. 1859. 

 Yucca guatemaleiusis Baker, Ref. Bot. 5: pi. 313. 1872. 



Veracruz, Morelos, etc., the type apparently from Veracruz. Extensively 

 cultivated in Guatemala. 



Often 8 to 10 meters high, compactly branched above, the trunk from a 

 swollen base, the bark rough ; leaves 50 to 100 cm. long, 5 to 7 cm. wide, green, 

 lustrous, not at all pungent, with very slightly scabrid margin ; flowers white or 

 creamy white. " Palmita," " datiles " (fruits), " palma " (Veracruz); " itabo " 

 (Costa Rica) ; "izote" (Veracruz, Guatemala, Honduras). 



Extensively cultivated, especially in Central America, as a hedge plant. 

 The flowers are prized as an article of footl, and are often found in the markets. 

 They are usually fried with eggs. 



8. Yucca treculeana Carr. Rev. Hort. 1858: 580. 1858. 

 Yucca aspera Regel, Ind. Sem. Hort. Petrop. 1858: 24. 1858. 

 Coahuila and Durango to Tamaulipas. Texas. 



Trunk usually less than 5 meters high, simple or sparsely branched; leaves 

 0.9 to 1.25 meters long, 2.5 to 5 cm. wide, bluish green, thick, rough, concave, 

 pungent, brown-margined ; flowers white, sometimes tinged with purple. 

 "Palma pita" or "palma de datiles (Tamaulipas); "palma loca " (Nuevo 

 Leon and elsewhere). 



The leaves yield a coarse fiber which is used extensively. Palmer reports 

 that the seeds are reputed purgative. The broader-leaved, larger-flowered 

 form is var. canaliculata Trel. ( Y. canaliculata Hook, in Curtis's Bot. Mag. III. 

 16: pi. 5201. 1860). 



9. Yucca schottii' Engelm. Trans. Acad. St. Louis 3: 46. 1873. 



Dry plains and hillsides, northern Chihuahua and Sonora. Southern Arizona 

 and Sonora ; type from Santa Cruz River, Arizona. 



Trunk 2 meters high or rarely larger, simple or nearly so ; leaves 2 to 4 cm. 

 wide, bluish green, smooth, thin, concave, pungent, very finely filiferous; 

 inflorescence usually tomentose ; fruit sometimes 10 cm. long. 



10. Yucca jaliscensis Trel., sp. nov. 



Yucca schottii jaliscensis Trel. Rep. Mo. Bot. Gard. 13: 99. 1902. 

 Jalisco; type from ZapotlSn. 



^Arthur Carl Victor Schott (1814-1875), a native of Germany, came to the 

 United States in 1850. He was appointed a member of the scientific corps of 

 the commission to establish the boundary between the United States and 

 Mexico, and in the course of his work made large botanical collections. In 

 1864 he was commissioned by the governor of Yucatan to make a geological 

 survey of that State, and here, also, he secured botanical collections. The 

 most complete representation of his Yucatin plants is in the herbarium of the 

 Field Museum of Natural History, but many of his specimens are in the U. S. 

 National Herbarium. 



