^warnm 
CATALOGUE. 
119 
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Opuntia hystricina, Eng. & Big. Very similar to the preceding and 
probably only a form of it, with longer and more numerous gray or reddish 
spines, longer yellow bristles, and usually smaller flowers.—New Mexico; 
between Walker and Carson Rivers, (H. Engelmann,) and Owen’s Yalley, 
.(Gabb,) Nevada. [Found abundantly in Monitor and Thousand Spring Val¬ 
leys, Nevada; 5-6,000 feet altitude ; July, in flower; September, in fruit. 
Flowers either purple or sulphur-yellow, scarcely smaller, w.] (436.) 
Opuntia kutila, Nutt. Similar to O. Missouriensis; joints often larger, 
S' by 4', covered with closely set bunches of mostly radiating and deflexed 
spines, the larger ones flattened and often twisted; flowers rose-red; ovary 
and dry berry spiny.—-From Fillmore to St. George, _ Utah, (Dr. Palmer; 
J. E. Johns'on;) a rediscovery of Nuttall’s long-lost plant, who found it near 
the Green River in Southern Wyoming. 
Opuntia erinacea, Eng. & Big. Pac. R. R. Surv. 4. 47, 1. 13. Diffuse, 
"ascending; joints thick, ovate, 2-2J' long, or sometimes elongated and almost 
cylindric, densely covered with clusters of 3-5 radiating spines, slender, 
long, very rigid, reddish-gray, with *2-4 smaller ones below; berry 
ovate, 1J' long, with crowded clusters of 12—20 mostly deflexed spines, 3— 6" 
long.—Near Mohave Creek, Southern California, (Bigelow.) [A specimen in 
Herb. Gray., collected by Dr. Bloomer near Virginia City, Nevada, (not seen 
by Dr, Engelmann,) may belong to this sp'ecies. w.] 
Opuntia fragilis, Nutt. Joints small, ovate, compressed or tumid or 
even terete, 1-1 ^ long, fragile; larger spines 4, cruciate, mostly yellowish 
brown, with 4-6 smaller white radiating ones below; bristles few; flowers 
smaller, yellow; fruit smaller, with 20-28 clusters of bristles, only the upper 
ones with a few short spines ; seeds few, regular.—On the Upper Missouri 
and Yellowstone, southward probably to New Mexico. [Found at the^west 
base of the Wahsatch in Jordan Valley. Specimens not seen by Dr. Engel¬ 
mann, but doubtless of this species, w.] (437.) 
Opuntia (Cylindropuntia) pulchella, Eng. Low, 3 10' high, spread¬ 
ing; joints small, slender, 1—3' long, id" thick, clavate, tuberculated, with 
bunches of straight radiating spines 6-18" long, from white to nearly black, 
one or more of the inner longer ones flattened; flowers purple, 1J' or less in 
diameter; ovary and. dry berry bearing numerous flexible not barbed bristles.— 
Near Walker’s River, Nevada, (H. Engelmann, Gabb.) [Frequent in the 
valleys of Western Nevada from the Trinity Mountains to Monitor Valley; 
