V' : ' 
III. Paniculate. 
Ip./ Flores ad apices ramorum inflorescentiae congesti 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 
p)f which are usually £-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 
SAgaves,: especially A. Americana and A. rigida . 
* Tubus perianthii lobis multoties brevior. 
f Stamina^ tubi basi inserta. 
I 9. Agave Newberryi, n. sp.: acaulis; foliis e basi latiore 
jfeensim apgustatis lanceolato-linearibus rigidis integris apice acu- 
deo fusco semitereti supra canaliculato armatis; ,scapo gracili, 
ipaniculae angustae racemiformls ramulis remotis bracteis lanceo- 
datis breviuseulis fultis abbreviatis paucifloris; perigonii tubo # 
-campanulato brevissimo, lobis oblongis, staminibus infimo tubo 
Ednatis.— Agave, n. sfi.P Torrey in Bot. Ives Exp. p. 29. ' 
| Peacock Spring, Northwestern Arizona, west of the San Fran- 
Kisep Mountains, between them and the Colorado River, over 
4,000 feet alt., discovered, when just beginning to bloom, March 
.31, 1:858, 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 different 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, 
Ishort-branched panicle. 
I Leaves 7-10 inches long, at base f inch wide, with entire, car¬ 
tilaginous margins,* terminating in a sharp, semi-terete or almost 
,* Possibly a horny tooth-bearing edge, si 
