Ee a a ee 
CORYPHANTHA. 33 
Simple, subglobose, up to 14 em. high and 19 cm. broad; tubercles very large, somewhat flat- 
tened, obtuse, 4 to 5 cm. long, densely woolly in the axils; areoles elliptic, when young woolly, in 
age naked; spines 8, all radial, somewhat unequal, subulate, the longest about 2 cm: long, spreading, 
when young brownish with yellowish bases, black at apex; flowers large, rose-colored, 11 cm. broad: 
perianth-segments numerous, narrowly oblong, apiculate. 
Type locality: Not cited. 
Distribution: Central Mexico, but Nicholson’s Dictionary of Gardening says Paraguay 
in error. 
This is a very characteristic plant but we know it only from illustrations. Walter 
Mundt once offered it for sale but his supply has been exhausted ; he gives a good illustra- 
tion of it in a group of cacti printed on his letter heads and he writes us that this plant 
has a large carmine flower. 
Schelle (Handb. Kakteenk. 238. 1907) gives M. elephantidens spinosissima Rebut, with- 
out synonymy or description. 
Illustrations: Dict. Gard. Nicholson 4: 563. f. 33; Suppl. 516. f. 550; Forster, Handb. 
Cact. ed. 2. 397. f. 40; Hort. Univ. 1: pl. 33; Pfeiffer, Abbild. Beschr. Cact. 2 pl. 20; Riim- 
pler, Sukkulenten 206. f. 117; Garden 1: 396; Lemaire, Icon. Cact. pl. 2 [not pl. 3]; Herb. 
Génér. Amat. II. 2: pl. 17; Palmer. Cult. Cact. 111; Ann. Rep. Smiths. Inst. 1908: pl. 14, 
f. 3; Goebel, Pflanz. Schild. 1: f. 34; Blanc, Cacti 68. No. 1224; Watson, Cact. Cult. 159. 
f. 60; Bergen in Rother, Praktischer Leitfaden Kakteen 5 ed. 1. 65; ed. 3. f. 38, as Mam- 
millaria elephantidens. 
14. Coryphantha bumamma (Ehrenberg). 
Mammillaria bumamma Ehrenberg, Allg. Gartenz. 17: 243. 1849. 
Mammillaria elephantidens bumamma Schumann, Keys Monogr. Cact. 43. 1903. 
Globular or somewhat depressed ; tubercles few, very large, rounded at apex, bluish green, very 
woolly in their axils when young but glabrate in age; spines 5 to 8, subulate, gr ayish brown, more or 
less recurved, 2 cm. long or more, all radial; flower large, yellow, 5 to 6 cm. broad; inner perianth- 
segments narrowly oblong, obtuse or retuse. 
Type locality: Mexico. 
Distribution: Mexico. ; | ee d 
This plant is perhaps nearest Coryphantha elephantidens, to which it was referred as a 
variety, but the flowers are much smaller and nearly yellow. Mundt states that the 
flowers are smaller but bright rose with a dark stripe. His plant, however, is not now in 
his possession. . 
The plants are often much depressed, arising only a little above the surface of the 
ground, and are firmly anchored in the soil by a thick root, almost equal in diameter to that 
of the stem itself. 
Dr. Rose made two collections in Mexico which we would refer here, one on the ped- 
regal near Yautepec, Morelos (No. 8530), and the other at Iguala, Guerrero (No. 9320) " 
Illustration: Engler and Prantl, Pflanzenfam. 3” H ms f ae _ oon M suntain, Cuen. 
Plate v, figure 6, shows a plant collected by H. - Rusby at Le var 
rero, altitude 300 meters, July 28, 1910 (No. 4), which flowered in the New ve rk Botan a 
Garden, September 11, 1911. Figure 29 is from a photograph showing a top 
plant collected by Dr. C. Reiche at Iguala, Mexico, in 1921. 
15. Coryphantha robustispina (Schott). 
| i d. 3: 265. 1856. 
 Mammillaria robustispina Schott in Engelmann, Proc. Amer. Acad. 3: 265 
oa : 891. 
Cactus robustispinus Kuntze, Rev. Gen. Pl. 1: 261. ; 308. 
Mammillaria brownit Toumey, Bot. oar a 1356 
Cactus brownit Toumey, Bot. Gaz. 22: . . . . 
Stems solitary or clustered, globular or a little longer than bapa ae ia cared fr tj comes 
armed and almost hidden by the spines; tubercles large, 2.5 othe becoming more or less dorsally 
what spiraled rows, fleshy, in age thickly set one against tne oe the 3 lower very stout, brown- 
flattened, pale, grayish green, narrowly grooved ; radial spines 12 to 15, the 3 , 
