ECHINOCEREUS BATLEYT, A NEW CACTUS FROM 
OKLAHOMA, 
By J. N. Roser. 
In 1904, James H. Gaut while collecting in the Wichita Mountains 
for the Biological Survey of the Department of Agriculture sent me 
two specimens of an Echinocereus. which at first T supposed to be a 
peculiar form of Echinocercus cuespitosus. Further examination of 
these plants showed very marked difference in the habit and in the 
arrangement of spines. Both these plants died without flowering. 
In 1906 Mr, Vernon Bailey also obtained from the Wichita Moun- 
tains several specimens, one of which flowered in 1907, 
The species may be described as follows: 
Echinocereus baileyi Rose, sp. nov. Puates LVI, LVIT. 
Plant body cylindrical, 10 cm. or so high; ribs 15, straight or perhaps some- 
times spiral; areoles elongated, separated from the adjacent ones by a space 
of about their own -length; spines at first white, when mature brownish or 
yellowish, about 16, somewhat spreading, those at the top and base of the 
areole smaller; central spines none; areoles when young clothed with dense 
white wool, this nearly or quite wanting in age; flowers from the youngest 
growth appearing terminal; corolla widely spreading, 6 cm. or more broad: 
petals light purple, oblong to spatulate-oblong, the broad apex toothed or 
jagged, the terminal tooth tapering into a slender awn: filaments short, yellow: 
style stout, longer than the filaments: stigmas 10, obtuse, green; areoles of the 
ovary bearing 10 or 12 slender spines intermixed with cohbwebby wool, the spines 
whitish, or the central ones brownish ; areoles of the tube crowning an elongated 
tubercle, not so closely set, bearing spines subtended by minute leaves. 
Collected by James H. Gaut, Mount Scott, Wichita Mountains, Oklahoma, 
October 25, 1904; and by V. Bailey, Wichita Mountains, August, 1906 (type). 
Type U. S. National Herbarium no. 53167. 
EXPLANATION OF PLATES LVI, LVII.—Plate LVI, potted plant. From photograph of one 
of Mr. Bailey’s specimens. Plate LVII, face of flower from same individual. 
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