. The Cactaceae : descriptions and illustrations of plants of the cactus family. CACTUS. 225 Short-cylindric, 5 to 10 dm. high; cephalium up to 10 cm. broad, 3 to 5 cm. high, rounded, com- posed of white wool and long brown bristles or spines, much longer than the wool; ribs 10 or 11, up to 3 dm. in diameter, prominent, 2 to 3 cm. high; spines about 10 to 12, stout, 3 to 5 cm. long, terete, yellowish to brown; flowers 3 to 4 cm. long; the tube narrowly cylindric, the lobes oblong, obtuse or mucronulate; fruit clavate, much elongated, 5 to 6 cm. long; seeds numerous, black, shining. Type locali
. The Cactaceae : descriptions and illustrations of plants of the cactus family. CACTUS. 225 Short-cylindric, 5 to 10 dm. high; cephalium up to 10 cm. broad, 3 to 5 cm. high, rounded, com- posed of white wool and long brown bristles or spines, much longer than the wool; ribs 10 or 11, up to 3 dm. in diameter, prominent, 2 to 3 cm. high; spines about 10 to 12, stout, 3 to 5 cm. long, terete, yellowish to brown; flowers 3 to 4 cm. long; the tube narrowly cylindric, the lobes oblong, obtuse or mucronulate; fruit clavate, much elongated, 5 to 6 cm. long; seeds numerous, black, shining. Type locality: Jamaica. Distribution: Arid southern parts of Jamaica. Dr. Britton studied this plant in the Healthshire Hills, south of Spanish Town, Jamaica, in company with Mr. William Harris in 1908. Here it is abundant on limestone with other cacti and xerophytic shrubs and trees and travelers use it for drinking water by cutting off the top and scraping out the watery pulp. Mammillaria communis (Steudel, Nom. ed. 2. 1: 245. 1840) appeared as a synonym of Cactus communis. Melocactus brongniartii Lemaire (Cact. Aliq. Nov. 12. 1838), of unknown origin, has never been definitely identified. Lemaire states that it is related to Melocactus Fig. 235.—Cactus 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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Keywords: ., bookauthorbrittonnathaniellord1, bookcentury1900, bookdecade1910
