. Carnegie Institution of Washington publication. 182 THE CACTACEAE. 201. Opuntia spinulifera Salm-Dyck, Hort. Dyck. 364. 1834. Opuntia candelabriformis Martius in Pfeiffer, Enum. Cact. 159. 1837. Opuntia oligacantha Salm-Dyck, Cact. Hort. Dyck. 1849. 241. 1850. Tall, much branched plants; joints orbicular to oblong, sometimes obovate, 20 to 30 cm. long, glabrous, a little glaucous; leaves small, red, 4 to 6 mm. long; areoles on young joints usually small, sometimes longer than broad, the margin at first bordered with cobwebby hairs, afterwards short white hairs, either spineless or with short
. Carnegie Institution of Washington publication. 182 THE CACTACEAE. 201. Opuntia spinulifera Salm-Dyck, Hort. Dyck. 364. 1834. Opuntia candelabriformis Martius in Pfeiffer, Enum. Cact. 159. 1837. Opuntia oligacantha Salm-Dyck, Cact. Hort. Dyck. 1849. 241. 1850. Tall, much branched plants; joints orbicular to oblong, sometimes obovate, 20 to 30 cm. long, glabrous, a little glaucous; leaves small, red, 4 to 6 mm. long; areoles on young joints usually small, sometimes longer than broad, the margin at first bordered with cobwebby hairs, afterwards short white hairs, either spineless or with short white bristle-like spines; areoles on old joints more or less sunken, rather close together; spines on old joints i to 3, i to 2 cm. long, subulate, bone-colored. Type locality: In Mexico. Distribution: Mexico. We have seen no wild specimens of this species, but Mr. Berger has grown it at La Mortola, Italy, and has distributed specimens now growing in New York and Washington. So-called Opuntia candelabriformis and 0. oligacantha are also in cultivation; but the original descriptions indicate that these two species should be merged into 0. s-pinulifera, and plants so determined in European collec- tions support this view. In so far as we have been able to ascertain, no type specimens of any of the three supposed species are extant. Schumann (Gesamtb. Kakteen 740. 1898) de- scribes the flowers of O. candelabriformis as purple, 6 to 7 cm. broad. Opuntia candela- briformis rigidiorSalm-Dyck (Cact. Hort. Dyck. 1849. 68. 1850), an unpublished variety, may belong here. Figure 221 represents a joint of a plant presented to the New York Botanical Garden by Mrs. George Such in FIG. 221.—Opuntia spinulifera. 202. Opuntia lasiacantha Pfeiffer, Enum. Cact. 160. 1837- Opuntia megacanlha lasiacantha Berger, Bot. Jahrb. Engler 36: 453. 1905. A tall plant, with a more or less definite trunk; joints obovate to oblong, 20 to 30 cm. long; leaves short, red; areoles small, 2 to 3 cm
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