. The Cactaceae : descriptions and illustrations of plants of the cactus family. Fig. 170.—Gymnocalycium 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 cm. long; flowers nearly central; ovary nearly globular, bearing a few broad scales. VThe'only reference to this binom
. The Cactaceae : descriptions and illustrations of plants of the cactus family. Fig. 170.—Gymnocalycium 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 cm. long; flowers nearly central; ovary nearly globular, bearing a few broad scales. VThe'only reference to this binomial which we have seen is that of Schumann (Gesamtb^ Kakteen 411) where it is used Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Britton, Nathaniel Lord, 1859-1934; Rose, J. N. (Joseph Nelson), 1862-1928. Washington : Carnegie Institution of Washington
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