below the throat; anthers 5-6 lines long, large for the flower ; no 
fruit seen.* 
6. Agave parviflora, Torrey , Bot. Mex. Bound. 214: 
parvula, acaulis ; foliis rosulatis terrae adpressis e basi lata vagi- 
nante dentata lineari-lanceolatis margine infra bruneo-dentato sur- 
sum in filamenta brevia crassa alba soluto, spina terminali rigida 
supra plana ; scapo elatiore, pedicellis brevissimis; floribus ge- 
minis seu subquaternis parvis, ovario oblongo perigonio duplo 
breviore, tubo profunde campanulato lobis oblongis erectis bis 
longiore, filamentis basi tubi insertis subinclusis; capsula pisi- 
formi subglobosa breviter cuspidata. 
On various sierras in the Pimeria Alta in Southern Arizona, in 
fl. & fr. in July, A. Schott.—The leaves of this prettiest and small¬ 
est of all Agaves are, together with the broad, sheathing base, not 
quite 3 inches long ; base 1 inch wide and a little longer ; blade if 
inches long, 4 lines wide, somewhat contracted above the base ; 
spines 2 lines long, at last gray. On its lower third or, half the 
leaf-margin bears very small, but rigid, sharp teeth, and higher 
up separates into a few short, stout, white filaments—the only 
instance of this combination, I believe, in the whole genus. 
Scape 4-5 feet high. Flowers 6, ovary over 2, tube 25, and lobes 
if lines long, with stamens and style about 4 lines in length and 
scarcely reaching beyond the lobes of the perigon ; anthers 3, cap¬ 
sule 4—5, and seeds if lines long. 
*** Folia margine aculeato-dentata. 
7. Agave heteracantha, Zucc. in Act. Leap. Car. 16, 2, 
675; Kunth, En. 5, 836: subcaulescens; foliis crassis rigidis 
lineari-lanceolatis in margine corneo demum soluto aculeos com- 
planatos uncinatos gerentibus, spina terminali valida subterete 
versus basin leviter exarata ; scapo et spica bracteis e basi triam- 
gulari subulatis marcidis demum deciduis ornato; floribus in 
pedicellis brevissimis binis, perigonio ovario oblongo longiore, 
* Dr. Gregg collected near Ocotillo, direction of Tepic, in Western Mexico, leaves of a 
ves and Yuccas, was called Palmilla by the natives; unfortunately no flowers came along, 
but, as it seems to be an undescribed Agave, it may be designated as A. anqustissima : 
leaves “ 2-3 feet long,” 2^-3 lines wide, convex on the back, filamentose on the margin, nar¬ 
rowed into a short (2| lines), stout, triangular, brown spine. It seems allied to A.Jilamen - 
spine precludes its being taken for a Yucca. 
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