32 Trans. Acad. Sct. of St. Louis. 
belong to this section of the genus. Notwithstanding the 
absence of adequate flowering material, enough fragments 
and remnants have been seen to warrant the belief that in 
floral characters they are somewhat intermediate between 
the Sisalanae and Tequilanae, more closely approaching 
the latter. Though the wild species seem to fruit freely, 
capsules appear to be rare on the cultivated forms, and, 
as with A. sisalana, statements that they never fruit are 
to be found. All appear to be freely bulbiferous after 
flowering, and thus to afford ‘‘pole plants’’ as well as 
offsets, by which they are propagated, being permanently 
set at about six-foot intervals after a preliminary stay in 
closer nursery plantation. 
End spine acuminately tapering, triquetrously subterete, not grooved, con- 
vex to barely a little concave at base, polished, at length blackish 
chestnut: marginal prickles rather slender, gradually tapering or with 
abruptly widened or sublenticular bases: leaves glaucous. A. Zapupe. 
End spine broadly triquetrous or nearly half round, obliquely flattened or 
broad-grooved to beyond the middle, sometimes with raised edges, or 
round-grooved on young leaves, polished, often turning gray. 
Spine and prickles blackish: spine gradually tapering: prickles rather 
slender, gradually tapering; leaves gray-green. A. rubescens.* 
Spine and prickles red or brown: spine somewhat acuminately taper- 
ing: leaves green. 
Prickles small and slender, from lenticular bases. A. Lespinasset. 
Prickles heavy, deltoid below or tapering from wide bases. 
A. Endlichiana. 
End spine gradually tapering, nearly terete, round-grooved often to or 
beyond the middle, rather dull below, reddish or rarely purplish brown, 
often turning gray. 
Prickles heavy, from deltoid bases: leaves grayish. A. aboriginum. 
Prickles rather slender, gradually tapering or from lenticular bases: leaves 
green. A. Deweyana. 
Agave Zapupe n. sp. 
Leaves rather dark green, persistently glaucous, striate, thin, gradually 
acute, 8-10150-200 cm.: end spine from bright red-brown becoming 
nearly black, smooth and glossy, gently curved, obtusely a little triquetrous, 
acuminately and subacicularly pointed from a broad convex flattened or 
slightly concave base, somewhat produced ventrally into the green tissue, 
415-25 mm., not decurrent: marginal prickles similarly colored, usually 
15-30 mm. apart in the middle, reduced or wanting near the tip, 2-3 mm. 
long, slender, straight or mostly upcurved, gradually tapering or their bases 
* See Rept. Mo. Bot. Gard. 18: 254. pl. 31-34. (1907). 
