. Carnegie Institution of Washington publication. . FIG. 240.—Opuntia arenaria. KIG. 241.—Opuntia trichophora. 219. Opuntia erinacea Engelmann, Proc. Amer. Acad. 3: 301. 1856. Opuntia ursina Weber, Diet. Hort. Bois 896. 1898. Growing in small, low clumps, the branches ascending or erect; joints ovate to oblong, flattened or thick, sometimes nearly terete, 8 to 12 cm. long; areoles somewhat tuberculate, large, numerous, closely set, 4 to 10 mm. apart; spines numerous, usually white or sometimes brownish or with brown tips, slender, often 5 cm., sometimes 12 cm. long or even more,
. Carnegie Institution of Washington publication. . FIG. 240.—Opuntia arenaria. KIG. 241.—Opuntia trichophora. 219. Opuntia erinacea Engelmann, Proc. Amer. Acad. 3: 301. 1856. Opuntia ursina Weber, Diet. Hort. Bois 896. 1898. Growing in small, low clumps, the branches ascending or erect; joints ovate to oblong, flattened or thick, sometimes nearly terete, 8 to 12 cm. long; areoles somewhat tuberculate, large, numerous, closely set, 4 to 10 mm. apart; spines numerous, usually white or sometimes brownish or with brown tips, slender, often 5 cm., sometimes 12 cm. long or even more, stiff, often developing on the old joints as long hairs or bristles; glochids numerous; flowers rather large, 6 to 7 cm. long, either red or yellow; ovary and fruit very spiny; seeds large, rather regular. Type locality: On Mojave Creek, California. Distribution: Northwestern Arizona, southern Utah, southern Nevada, and eastern 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 Carnegie Institution of Washington. Washington, Carnegie Institution of Washington
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