92 MISSOURI BOTANICAL GARDEN. 
Somewhat cespitose, acaulescent. Leaves essentially smooth, gray, 
very broadly oblong, little acuminate, very openly concave, 10-16 
15-80 em., stiffly erect-spreading: spine straight or somewhat flexuous, 
from reddish chestnut becoming gray, 5-6><25 mm., very openly 
grooved nearly to the end, shortly decurrent: prickles similarly colored, 
about 15 mm. apart, 4-7 mm. long, usually strongly reflexed, some- 
times doubly curved, narrowly triangular, abruptly somewhat lenticu- 
larly widened on the usually concaved margin, Inflorescence 4-5 m. 
high, the upper half oblong-paniculate: scape rather stout: bracts 
broadly triangular, rather close, suberect: branches somewhat as- 
cending: pedicels about 5 mm. long. Flowers yellowish, 55-75 mm. 
long: ovary 25-45 mm. long, fusiform: tube openly conical, 10 mm. 
deep: segments 6 X about 15 mm., scarcely twice as long as the tube 
and one-half to one-third as long as the ovary: filaments inserted a 
little below the throat, 50-55 mm. long, thrice as long as the seg- 
ments. Capsules broadly oblong, 20-25>< 55-75 mm., stipitate and 
beaked: seeds 68 mm. 
South-central Arizona.—Pl. 87-89. 
Specimens examined:—Arizona. Huachuca Mountains 
(Pringle, 1884,—the type; Towmey, 1894; Wilcox, 1895; 
Brewer, 1907; Ferriss, 1908). Sta. Catalina Mountains 
(Rose, 101, 1908). 
Agave Patonii Trelease. 
Acaulescent. Leaves essentially smooth, light gray-green, very 
broadly oblong, quickly acuminate, openly concave, as much as 20 
30 em., stiffly erect-spreading; spine somewhat flexuous, from purple- 
chestnut becoming dull gray-brown, 6 X 30-35 mm., openly grooved 
nearly to the end, decurrent for about its own length; prickles simi- 
larly colored, 20-25 mm. apart, 6-7 mm. long, retrorse or recurved, 
triangular from low ashen bases, the intervening margin somewhat 
concave. Inflorescence paniculate; pedicels about5mm. long. Flow- 
ers about 65 mm. long: ovary about 80 mm. long, subfusiform: tube 
narrowly conical, 10 mm. deep: segments 5X 20 mm., about twice as 
long as the tube and two-thirds as long as the ovary: filaments in- 
serted in the throat, about 45 mm. long, somewhat more than twice 
as long as the segments. Capsules rather broadly oblong, 20 55-60 
mm., stipitate and beaked: seeds glossy, 6 * 8-9 mm. 
North-central Mexico.—Pl. 90. 
Specimens examined:—Duranoo. Chinacates (Paton, 
‘April 1911,—the type). Tobar (Palmer, 228, 1906). 
