GYMNOCALYCIUM. 161 
Type locality: Rio Tigatigami, Paraguay. 
Distribution: Paraguay. | 
Illustrations: Blithende Kakteen 1: pl. 4; Monatsschr. Kakteenk. 29: 81; Schumann, 
Gesamtb. Kakteen Nachtr. f. 26, as Echinocactus antsitsit. 
Figure 168 is copied from the first illustration above cited. 
14. Gymnocalycium monvillei Pfeiffer, ined.* 
Echinocactus monvillei Lemaire, Cact. Aliq. Nov. 14. 1838. 
Globose, large, 20 cm. in diameter or more; ribs 13 to 17, broad and obtuse, strongly tubercled; 
areoles elliptic; spines 12 or 13, all radial, yellowish except the purplish bases, subulate, spreading, 
3 to 4.cm. long, slightly curved; flowers large, nearly white, 6 to 8 cm. long; inner perianth-segments 
oblong, acute; scales on the ovary orbicular. 
Type locality: Paraguay. 
Distribution: Mountains of Paraguay. 
Echinocactus contractus Hildmann (Monats- 
schr. Kakteenk. 1:15, with plate. 1891) is a hybrid 
between this species and G. gibbosum. 
Illustrations: Blithende Kakteen 1: pl. 10; 
Lemaire, Icon. Cact. pl. 1; Lemaire, Cact. Aliq. 
Nov. pl. 1, f. 1, 2; Méllers Deutsche Gart. Zeit. 25: 
474. f. 6, No. 4; Garten-Zeitung 4: 182. f. 42, No. 
17; Monatsschr. Kakteenk. 27: 171; 29: 81, as 
Echinocactus monvillei. 
Figure 169 is copied from the first illustration _ 
above cited; figure 170 is from a photograph contributed by Dr. Spegazzini, showing his 
understanding of this species. This may be different from the plant shown by figure 169, 
but we know the species only from descriptions and the illustrations cited above. We 
are unable to determine which of the figures is the more nearly correct. 
Fic. 170.—Gymnocalycium monvillei. 
Fic. 172.—G ymnocalycium uruguayense. 
Fic. 171.—Gymnocalycium melanocarpum. 
15. Gymnocalycium melanocarpum (Arechavaleta). . «deo §1220. 1905. 
Echinocactus melanocarpus Arechavaleta, Anal. Mus. Nac. Montevi , 5 4 . a tubercled: spines 
Simple, globose, 7 to 9 cm. in diameter; ribs 15, broad and roun 4 7 . flowers nearly central: 
all radial, 10 to 12, yellow when young, in age grayish, 2 to 2.5 cm. long, ) 
Ovary nearly globular, bearing a few broad scales. SET Onener 
1 which we have seen is that of Schumann (Gesamtb. Kakteen 411) where it 
.  *,Thezonly reference to this binomia 
1s used as_a synonym. 
