CORYPHANTHA. 35 
it are flowers and a spine-cluster from the herbarium of J. W. Toumey, collected in his cactus 
garden at Tucson, June 12, 1896, and a small specimen from near the type locality obtained 
by Vernon Bailey, March 22, 1890, and more recently by Fisher at Langtry, Texas. 
Illustrations: Cact. Journ. 1: 114; 2: 6; Dict. Gard. Nicholson Suppl. 514. f. 546; 
Forster, Handb. Cact. ed. 2. 402. f. 42; Riimpler, Sukkulenten 204. f. 115; Journ. Hort. 
Home Gard. mI. 46: 379; Cact. Mex. Bound. pl. 11; Watson, Cact. Cult. 169. f. 67; ed. 
3. f. 44; West Amer. Sci. 13: 40; Blanc, Cacti 73. No. 1459; Cassell’s Dict. Gard. 2: 48; 
Remark, Kakteenfreund 15, as Mammillaria pectinata; Schelle, Handb. Kakteenk. 240. 
f. 158, as M. radians impexicoma [Schelle’s illustration is the same as Engelmann’s]. 
Figure 31a is from a photograph of a plant obtained by George L. Fisher near Langtry, 
Texas, in 1922. 
Fic. 31a.—Coryphantha pectinata. Fic. 31b.—Coryphantha echinus. 
18. Coryphantha nickelsae (K. Brandegee). 
Mamumillaria nickelsae K. Brandegee, Zoe §: 31. 1900. 
. . : - older plants 
Described as globular, densely cespitose, often 7 cm. high, pale green and glaucous; 0 ‘ 
becoming purplish: tubercles almost hidden by the overlapping spines, ae broad at base, Oy 
not densely arranged; spines 14 to 16, all radial (a few forming a small fascic hth oP f avioinin , 
slender, at first simply spreading but afterward bent back and interlaced wit ose © as pein 8 
tubercles, 8 to 10 mm. long, at first yellowish at base with dark tips, but a terwar , bufer, 5 e 
flowers described as bright yellow, with a red center, 5 to 7 cm. broad; fruit nearly § , 
7 mm. long, green; seeds small, brown. 
Type locality: Mexico, southward from Laredo, Texas. 
Distribution: Northern Nuevo Leén, Mexico. ; 
Plants collected by Robert Runyon in March 1921, on Mount ra wae neat 
Monterey, which we believe should be referred here, deserve some detaile th seurface of 
They grow in clusters of 4to 12. From the axils of the lower tubercles near ene ne 
the ground numerous young plants or buds originate, the young spines are Lane y lack 
with reddish-brown tips, in age some bleaching white, others brown's . oe hove ne 
throughout; many of the first areoles have only radial spines but old p te sllow: inner 
central spine 1.5 to 2 cm. long, from all the upper areoles ; flowers eet “iow 
perianth-segments spreading, linear-lanceolate, acuminate; ed by Mr "Run on which 
Plate ri, figure 1, is from a photograph of the plant collected Dy Fig y is from a 
was made at his home in Brownsville, Texas, September 15, 1921. SIBUEC 3 
photograph of a specimen sent us by Dr. Richard E. Kunze 1n 1911. 
