34 Trans. Acad. Sct. of St. Louis. 
closely allied to the succeeding indigenous species and to 
the purple-spined A. rubescens of the adjacent table-land. 
Specimens examined :—Plantations about Tuxpam, V.C. 
(Lespinasse, June 1908—the type, and May 1908, ‘‘zapupe 
de Tepezintla’’) and the island of Juana Ramirez (Vin- 
cent, March 1909, ‘‘'Tepezintla’’ or ‘‘ Vincent’’). 
Agave Endlichiana n. sp. 
Leaves from light to dark green, apparently transiently glaucous, 5-9 
80-125 cm. or more: spine garnet-colored to chestnut, becoming grayish, 
smooth and very glossy, somewhat flexuous, almost half-round below, 
acuminately pointed, obliquely round-grooved or concavely flattened, often 
with a low median keel, to beyond the middle, usually produced ventrally 
and dorsally into the green tissue, 4-5 X 15-30 mm., decurrent on the margin 
for nearly its own length: prickles bright garnet or chestnut-pointed, 10-20 
or exceptionally 30 mm. apart in the middle, often continuing to the tip, 
about 3 mm. long, heavy, upcurved, gradually tapering, the intervening 
thin translucent margin straight or low-repand. Inflorescence and flowers 
unknown. Capsules obovoid, stipitate, 3060 mm.,—adherent vestiges of 
the flowers showing that the filaments are inserted about the upper third of 
the tube. 
The ‘‘ixtle’’ or ‘‘ixtle manso’’ of the coastwise slope of 
the Orizaba range (but not of Yucatan) ; occurring wild, 
in a rather shorter leaved form, and somewhat cultivated 
for its fiber. 
Specimens examined :—About Huatusco, V.C. (Endlich, 
1160 b—the type, of dark color, and 1160 a, a paler form, 
both in March 1906, and young capsules, Sept. 1906, 
‘ixtle’’; Purpus, w.), Chavarillo (Chamberlain, March 
1908) and elsewhere about Jalapa (Sloss, 1909, ‘‘ixtle 
manso’’). 
Agave aboriginum n. sp. 
Leaves yellowish green, persistently somewhat gray rather than glaucous, 
scarcely striate, rather fleshy and acuminately pointed, 5-11 70-150 cm.: 
spine from brown becoming grayish, smooth, dull below, nearly straight 
and conical, round-grooved to the middle, 435-50 mm., often decurrent 
on the margin for its own length: prickles similarly colored, usually 20-35 
mm. apart in the middle, continuing nearly to the tip, 5-8 mm. long, some- 
times with intercalated smaller ones, heavy, upcurved, their deltoid bases 
5-8 mm. wide and sometimes concave below, the intervening thick usually 
green margin nearly straight. Inflorescence unknown. 
The wild zapupe, ‘‘zapupe cimarroén,” ‘‘zapupe sil- 
vestre’’ or ‘‘zapupe de Sierra Chontla,’’ of the region be- 
