? 
CORYPHANTHA. 45 
Mammillaria montana is described briefly and figured (f. 1 399) by Blanc in Hints on 
Cacti, p.72. It is also described and figured by Darel (Illustr. Handb. Kakteen 96. f. 81), 
who says that it comes from Montana and Utah. It is illustrated by Haage (Cact. Kultur 
ed. 2.187). It is apparently the same as Coryphantha vivipara. 
Illustrations: Cycl. Amer. Hort. Bailey 2: f. 1356; Stand. Cycl. Hort. Bailey. 4: f. 
2315; Tribune Hort. 4: pl. 140; Curtis’s Bot. Mag. 126: pl. 7718; De Laet, Cat. Gén. f. 
43; Cact. Mex. Bound. pl. 74, f. 3 (seed); Meehan’s Monthly 9: pl. 9, as Mammillaria 
vivipara; Clements, Rocky Mountain Flow. pl. 32, f. 7; Clements, Fl. Mount. Plain pl. 32, 
f. 7; Britton and Brown, Illustr. Fl. 2: 462. f. 2526, as Cactus viviparus; Monatsschr. 
Kakteenk. 3: 132; Schelle, Handb. Kakteenk. 236. f. 150; Floralia 42: 375, as Mammillaria 
radtosa; Cact. Mex. Bound. pl. 74, f. 5 (seed), as Mammillaria radiosa texana; Cact. Mex. 
Bound. pl. 74. f. 4 (seed), as M. radiosa borealis; Britton and Brown, I!lustr. Fl. ed. 2. 2: 
f. 2985. 
32. Coryphantha neo-mexicana (Engelmann). 
“> Mammillaria vivipara radiosa neo-mexicana Engelmann, Proc. Amer. Acad. 3: 269. 1856. 
Mammillaria radiosa neo-mexicana Engelmann, Cact. Mex. Bound. 64. 1859. 
> Mammillaria radiosa borealis Engelmann, Cact. Mex. Bound. 68. 1859. 
> Mammillaria radiosa texana Engelmann, Cact. Mex. Bound. 68. 1859. 
_= Cactus radiosus neo-mexicanus Coulter, Contr. U. S. Nat. Herb. 3: 120. 1894. 
— Cactus neo-mexicanus Small, Fl. Southeast. U. S. 812. 1903. ; 
> Mammillaria neo-mexicana A. Nelson in Coulter and Nelson, Man. Bot. Rocky Mountains 327. 1909. 
Plants usually solitary, globular to short-oblong, 8 to 12 cm. long, the whole body usually hid- 
den under a mass of spines; radial spines numerous, acicular, usually white; central spines several, 
much stouter than the radials, pale below, brown or black towards top; flowers 4 to 5 cm. broad 
when fully expanded; outer perianth-segments greenish or the ones nearer center purplish, ciliate; 
inner perianth-segments broadly linear, acuminate and apiculate, more or less serrate above; fila- 
ments greenish, much shorter than perianth-segments; stigma-lobes extending beyond filaments, 
white, obtuse, not apiculate as in Coryphantha vivipara; fruit 2.5 cm. long, green, juicy, naked except 
a few hairy scales near top, capped by withered perianth, depressed at apex. 
Type locality: Western Texas to New Mexico, doubtless at El Paso. 
Distribution: Western Texas, New Mexico, and northern Chihuahua. 
The distribution of this species can not be stated at present very definitely. It may 
be that some of the plants from northern New Mexico, especially those found in the 
mountains, may better be referred to C. vivipara, and the same is true of some of the plants 
from Texas. It is probable that the plants from central Texas and perhaps northwestern 
Texas may all be referred to C. vivipara. We have no Mexican plants before us but we have 
plants from El Paso, just over the Mexican Boundary line. Just how far south the species 
extends we do not know. We have greatly restricted the range from that given by Coulter 
in the Contributions from the U. S. National Herbarium (3: 120. 1894). 
Illustrations: Gartenwelt 4: 159; Cact. Mex. Bound. pl. 13; Forster, Handb. Cact. ed. 
2. 304. f. 30, as Mammillaria radiosa neo-mexicana ; Watson, Cact. Cult. 181. f. 73; ed. 3. f. 
50; Dict. Gard. Nicholson 4: 566. f. 41, as Mammillaria vivipara radiosa; Dict. Gard. 
Nicholson Suppl. 517. f. 554, as Mammillaria radiosa; Cact. Mex. Bound. pl. 74 (seed), as 
Mammitllaria borealis. er 
Plate 11, figure 1, shows a plant sent from Canutillo, Texas, by Mrs. S. L. Pattison in 
1920; figure 1a shows the fruit. Figure 43 is from a photograph of a plant collected by 
Dr. Rose near Albuquerque, New Mexico, in 1908. 
33. Coryphantha arizonica (Engelmann). J is76. 
Mammillaria arizonica Engelmann, Bot. Calif. 1:24.) 1870. 
Cactus radiosus arizonicus Coulter, Contr. U. S. Nat: Herb. 3: in ar 
_7 Mammillaria radiosa arizonica Schumann, Gesamtb. Kakteen 481. 1595. 
sa meter broad; each head globose to ovoid, 7.5 to 
Sometimes cespitose, forming large clump deeply grooved; spines numer- 
10 cm. in diameter; tubercles about 2.5 cm. long, cylindric, ascending, 
/ 
