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In recent years, the prickly pear has attracted considerable attention as forage for cattle. Full report of yields of several species in test plantations in southern Texas is given in Bulletin No. 208 of the United States Department of Agriculture (May, 1915) by David Griffiths. See also a discussion of the forage value of prickly pears by Woodward, Turner and Griffiths, "Journal of Agricultural Research," August, 1915.
In recent years, the prickly pear has attracted considerable attention as forage for cattle. Full report of yields of several species in test plantations in southern Texas is given in Bulletin No. 208 of the United States Department of Agriculture (May, 1915) by David Griffiths. See also a discussion of the forage value of prickly pears by Woodward, Turner and Griffiths, "Journal of Agricultural Research," August, 1915.
O. Bergeriana, A. Web. Allied to O. nigricans. Forming a shrub 5-10 ft. high: joints obovate or oblong-ovate, 9 in. long, 4½ in. wide: spines varying in number and size, spreading: fls. red, over 1 in. long. G.C. III. 35:34.—O. cantabrigiensis, Lynch. Similar to O. Engelmannii, but differs in the whitish spines and broadly obconical ovary. G.C. III. 33:98.—O. cervicornis. Probably a hybrid. Joints cylindric, strongly tubercled, decumbent, about 5 in. long: spines golden brown: fls. yellow, 2½ in. wide. Colo.—O. coccinellifera. Mill.—Nopalea.—O. cornigata, Salm-Dyck, was once advertised, but is little known.—O. Deamii, Rose. About 3 ft. high: joints erect or spreading, 10-12 in. long: spines 2-6, stout, white or dull yellow: fls. 3 in. long, rose-colored. Guatemala.—O. Dillenii, Haw. Erect: joints glaucous, obovate-rotundate: areoles clothed with yellow, eventually white, tomentose; spines yellowish, 3-5 smaller ones and stronger: fls. yellow. W. Indies.—O. glaucophylla, Wendl. Erect: joints obovate, glaucous: spines 1 or 2, less than 1 in. long. Mex.—O. Gosseliniana, A. Web. 3-4 ft. high: st. with long bristles. Mex.—O. haematocarpa, Berger, is advertised abroad.—O. haitiensis, Brit. Trunk 10-13 ft. high, densely armed with spines 5 in. or less long: fls. yellow to orange. 1 in. broad. Haiti.-O. Hanburyana, A. Web. Distinct on account of its straggling habit, long spreading spines, small ovary and fr. G.C. III. 35:34.-O. Kleiniae, DC. Shrubby, erect: joints cylindrical, slender: spines mostly solitary: fls. cinnabar-red. Texas.—O. laevis, Coult. Joints light green, elongate-obovate, 12 in. long: areoles small, gray tomentose, with numerous short pale bristles: fls. yellow, tinged with red, about 2 in. broad: fr. somewhat pyriform. Ariz.—-O. lurida is probably O. arborescens.—O. Millspaughii, Brit. Trunk 2 ft. or less high, densely covered with spines sometimes 6 in. long: fls. scarcely ½ in. across. Bahamas.—O. myriacantha, A. Web. Branches yellow-green, pendulous when old: areoles clothed with clusters of yellow bristles: petals pure yellow. Galapagos lab. G.C. III. 27:178.—O. santa-rita, Rose. Joints reddish, usually orbicular: areoles with chestnut-brown bristles: fls. deep yellow, 2½-3 in. across. S. W. U. S.-O. Schumannii, A, Web. Allied to O. nigricans. Shrub, 4-5 ft. high: joints obovate- oblong, 12 in. long, about 5 in. broad: fls. 2H in. long. G.C. III. 35:34.—O. Spegazzinii. A. Web. St. and branches cylindric: spines 5 or 6, short, whitish: fls. small, numerous, white. Paraguay.— O. Taylori, Brit. & Rose. Prostrate, widely branched: joints oblong to narrowly obovate, up to 5 in. long: fls. small, yellow. Haiti.—O. tomentella, Berger. Very free-flowering: joints 8-12 in. long, bright green: areoles clothed with short blackish wool; spines 1 or 2, slender, whitish: fls. yellow-red. Guatemala.—O. tomentosa, Salm-Dyck. Erect: joints lanceolate, 6 in. long: spines bristly, scarcely exceeding the tomentum: fls. reddish. Mex.—O. utahensis, Purpus. Prostrate: joints ascending, elliptic or obovate, swollen, about 6 in. long: areoles circular, with yellowish white wool; spines 1-4, rigid: fls. carmine, up to 4 in. across. Utah.
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