KNGELMANN — NOTES ON AGAVE. 3O9 



III. Paniculate. 

 Flores ad apices ramorum inflorescentiae congest! paniculati. 



These are the typical Agaves, of which 20 or more forms are 

 enumerated, with stout, often very large, fleshy leaves, almost 

 always with spiny marginal teeth and strong spiny tips, a stout 

 and high scape bearing a paniculate inflorescence, the branches 

 of which are usually J-2 feet long or even more, stout, vertically 

 compressed, and naked up to the base of the branchlets or pedun 

 cles. Most of them are stemless, some have trunks several feet 

 high, but none grow as large as some Yuccas do. Among them 

 we find the economically and commercially most important 

 Agaves, especially A. Americana and A. rigida. 



* Tubus perianthii lobis multoties brevior. 

 t Stamina tubi bast inserta. 



9. Agave Newberryi, n. sp. : acaulis ; foliis e basi latiore 

 sensim angustatis lanceolato-linearibus rigidis integris apice acu- 

 leo fusco semitereti supra canaliculato armatis ; scapo gracili, 

 paniculae angustai racemiformis ramulis remotis bracteis lanceo- 

 latis breviusculis fultis abbreviatis paucifloris ; perigonii tubo 

 campanulato brevissimo, lobis oblongis, staminibus infimo tubo 

 adnatis. — Agave, n. sp.? Torrey in Bot. Ives Exp. p. 29. 



Peacock Spring, Northwestern Arizona, west of the San Fran- 

 cisco Mountains, between them and the Colorado River, over 

 4,000 feet alt., discovered, when just beginning to bloom, March 

 31, 1858, by Dr. J. S. Newberry on Lieut. Ives' Expedition, and 

 named for him in commemoration of his services to Botany in 

 this and other western explorations. — This very peculiar plant, 

 of which we unfortunately know so little, is so difterent from the 

 other paniculate Agaves known to me, that their connection 

 seems to be altogether artificial ; but for the present I can not 

 do better than to place it between them and the last section, 

 to which the small stature and the form of the leaves seem to 

 approximate it, though the inflorescence is clearly a contracted, 

 short-branched panicle. 



Leaves 7-10 inches long, at base \ inch wide, with entire, car- 

 tilaginous margins,* terminating in a sharp, semi-terete or almost 



* Possibly a homy tooth-bearing edge, such as we find in A. heteracantha, may have 

 broken off, but no traces of such remain in the only extant specimen. 



