GYMNOCALYCIUM. 
161 
Type locality: Rio Tigatigami, Paraguay. 
Distribution: Paraguay. 
Illustrations: Bliihende Kakteen i: pi. 4; Monatsschr. Kakteenk. 29: 81; Schumann, 
Gesamtb. Kakteen Nachtr. f. 26, as Echinocactus anisitsii. 
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: Bliihende Kakteen 1: pi. 10; 
Lemaire, Icon. Cact. pi. 1; Lemaire, Cact. Aliq. 
Nov. pi. 1, f. 1, 2; Mollers 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. 
Fig. 171.—Gymnocalycium melanocarpum. Fig. 172.—Gymnocalycium uruguayense. 
15 . Gymnocalycium melanocarpum (Arechavaleta). 
Echinocactus melanocarpus Arechavaleta, Anal. Mus. Nac. Montevideo 5: 220. 1905. 
Simple, globose, 7 to 9 cm. in diameter; ribs 15, broad and rounded, strongly tubercled; spines 
all radial, 10 to 12, yellow when young, in age grayish, 2 to 2.5 cm. long; flowers nearly central; 
ovary nearly globular, bearing a few broad scales. 
* t Thelonly reference to this binomial which we have seen is that of Schumann (Gesamtb> Kakteen 411) where it 
is used as_a_synonym. 
