[ 26] ~ 
A, sanguinea. 'These, together with a low scrubby oak tree, with small 
perennial leaves, were the only trees collected about Cosihuiriachi. A 
species of Juniperus , With red berries, a Thuja, and a “ese leaved Co- 
awania (?)27 all of them in fruit, were also brought from 
t Between Chihuahua and Cosihuiriachi, but Spoil abet the latter 
place, the porphyritic soil produced a number of Cactaceae, some strang 
Echinocacti, several 'Mammillariae, a few Opuntiae, an principally a 
great variety of E'chinocerei. One of the latter is completely covered with 
stout and long spines;** ano ther has short radiating pint, closely ad- 
pressed to the plant;*® a third has short radiating spines, with single, stout 
black central ones, which project from the plant in all directions;*° a 
fourth is distinguished by its longer and curved reddish radiating spines, 
with a stouter one projecting from their centre.*! I have all of these in 
- 
an iz hru abby leaves crowded, small, cuneate three- 
toothed at apex, revolute , tomentose below, glabrous and glandular above, 
sweetscented; turbinate tube of calyx, as well as the oblong lobes, 1 line 
me's si stamens, persistent; about 5 woolly ovaries Compare e below 
note 51. 
Behind polyacanthus, n. sp., elongato-ovatus, 10-costatus; areo- 
lis elevatis, ovatis, subapproximatis, junioribus s albido 4-tomentosis; aculeis 
radialibus 10-12 ayONs apice adustis, plus minus porrectis; lateralibus 
majoribus, demum subadpressis, superioribus minoribus; c entralibus sub-4 
corneis, apice fasdin, 3 os rioribus sursum versis, inferior singulo lon- 
giore: porrecto, demum deflex 
Cosihuiriachi.—Several oat stems, 4 to 5 inches fit and 2} to 3in 
diameter, from one base ; upper radial spines 4 to 5, lateral and inferior 8 to 
10, upper central 9 to 12, lower one 15 to 20 lines long. Spines at last 
ashy-gray. 
- *° Echinocereus adustus, 1. sp., ovatus, 13-15-costatus; areolis elevatis, 
lanceolatis, approximatis, yinibebue albo-tomentosis; aculeis radialibus 16- 
18 adpressis, albis, apice adustis; 4-5 superioribus brevibus, setaceis, late- 
talibus inferioribusque longioribs , tobustioribus ; centrali nullo. 
hi.—Plant 14 to 4 inches high, 1 to 2 in diameter; sppes 
spines 1G rlewer about 2, ae lateral 4 to 5 lmes long. 
°° Eichinocereus radians, 0. sp., ovatus 13-14-costatus, sroclia elevatis, 
ovatis, subapproximatis, junioribus albo-villosis; aculeis radialibus 16-20 
us apice adustis, superioribus brevibus setaceis, anes 
bus sinferoribusque loneiobil robustioribus; centrali singulo porrecto 
usto, ft 
Cosihuiriachi.--2} inches high, 2 in diameter; upper radial spines 1 to 
es 3, ae ot about 5 lines loug; central spines brown or black, much 
31, to-ovatus, Elisoutst tus; areolis 
radiali- 
S, , elonga' 
elevatis say le cowie juniorbas albido-villosis; aculeis 
bus 16-18, ep ema at adpressis, intertextis; 3-5 superioribus setaceis, brevi- 
bus, albi dis; lateralibus elongatis s fuscis, recurvis, centrali singulo, robusto, 
‘Cosihuiriachi.—Stem 4 inches high, below 2 in diamters ‘upper radial 
