GYMNOCALYCIUM. 



161 



Type locality: Rio Tigatigami, Paraguay. 

 Distribution: Paraguay. 



Illustrations: Bluhende Kakteen i: pi. 4; Monatsschr. Kakteenk. 29: 81; Schumann, 

 Gesamtb. Kakteen Naehtr. f . 26, as Echinocactus anisitsii. 



Figure 1 68 is copied from the first illustration above cited. 



14. Gymnocalycium monvillei Pfeiffer, ined.* 



Echinocactus monvillei Lemaire, Cact. Aliq. Nov. 14. 1838. 

 Globose, large, 20 em. 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. 1 891) is a hybrid 

 between this species and G. gibbosum. 



Illustrations: Bluhende Kakteen 1: pi. 10; 

 Lemaire, Icon. Cact. pi. 1 ; Lemaire, Cact. Aliq. 

 Nov. pi. 1, f. i, 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. 170. Gymnocalycium monvillei. 



Fig. 



Fig. 172. Gymnocalycium uruguayense. 



Gymnocalycium melanocarpum. 



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. 



*,The^only reference to this binomial which we have seen is that of Schumann (Gesamtb. Kakteen 411) where it 

 is used as_a_synonym. 



