192 THE CACTACEAE. 
7. Malacocarpus apricus (Arechavaleta). 
Echinocactus apricus Arechavaleta, Anal. Mus. Nac. Montevideo 5: 205. 1905. 
Cespitose, in clusters of 2 to 10, subglobose, 3 to 5 cm. in diameter, umbilicate at apex, densely 
covered with interlocking spines; ribs 15 to 20, somewhat curved, more or less tuberculate; areoles 
orbicular, 3 to 4 mm. apart, tomentose when young, becoming naked in age; radial spines 18 to 20, 
grayish yellow, flexible; central spines several, 4 of the larger ones reddish at base; flowers yellow, 
8 cm. long; flower-tube densely woolly and setose on the outside, very stout. 
Type locality: Punta de la Ballena, Uruguay. 
Distribution: Uruguay. 
We know this plant only from description and illustration, from which the above 
description has been drawn. 
Illustration: Anal. Mus. Nac. Montevideo 5: pl. 10, as Echinocactus apricus. 
Figure 204 is copied from the illustration above cited. 
FIG. 204.—Malacocarpus apricus, Fic. 205.—Malacocarpus tabularis. 
8. Malacocarpus concinnus (Monville). 
Echinocactus concinnus Monville, Hort. Univ. 1: 222. 1839. 
Echinocactus joadu Hooker in Curtis’s Bot. Mag. 112: pl. 6867. 1886. 
Echinocactus concinnus joadit Arechavaleta, Anal. Mus. Nac. Montevideo 5: 204. 1905. 
tub Simple, globular or somewhat depressed, 5 to 7.5 cm. in diameter; ribs about 16 to 20, somewhat 
uberculate, light green; young areoles white-felted; spines 10 to 12, spreading, setaceous; radial 
spines 5 to 7 mm. long; central spines 1 to 4, one much longer, spreading or turned downward; 
owers arge, 7 cm. song: outer peranti-segments narrow, acute, reddish; inner perianth-segments 
optong, yellow, except the reddish tips, acute; stigma-lobes bright red: scales on the ovary hairy in 
their axils; perianth-tube slender. = . - “_— 
Type locality: Not definitely cited. 
Distribution: Southern Brazil and Uruguay. 
We know this species only from description and illustrations. 
