. Carnegie Institution of Washington publication. 208 THE CACTACEAE. 235. Opuntia rubescens Salm-Dyck in De Candolle, Prodr. 3: 474. 1828. Opuntia catacantha Link and Otto in Pfeiffer, Enum. Cact. 166. 1837. Consoka rubescens Lemaire, Rev. Hort. 1862: 174. 1862. Consoled catacantha Lemaire, Rev. Hort. 1862: 174. 1862. Opuntia guanicana Schumann in Giirke, Monatsschr. Kakttcnk. 18: 180. 1908. Trunk erect, nearly cylindric below, flattened above, 3 to 6 meters high, sometimes dm. in diameter, branching above, its areoles bearing several or many acicular spines up to 8 cm. long or more, or sp
. Carnegie Institution of Washington publication. 208 THE CACTACEAE. 235. Opuntia rubescens Salm-Dyck in De Candolle, Prodr. 3: 474. 1828. Opuntia catacantha Link and Otto in Pfeiffer, Enum. Cact. 166. 1837. Consoka rubescens Lemaire, Rev. Hort. 1862: 174. 1862. Consoled catacantha Lemaire, Rev. Hort. 1862: 174. 1862. Opuntia guanicana Schumann in Giirke, Monatsschr. Kakttcnk. 18: 180. 1908. Trunk erect, nearly cylindric below, flattened above, 3 to 6 meters high, sometimes dm. in diameter, branching above, its areoles bearing several or many acicular spines up to 8 cm. long or more, or spineless: ultimate joints thin and flat, mostly dark green or reddish green, not reticulate- areolate except when young, oblong to oblong-obovate, dm. long or less, mostly 2 to 4 times as long as wide, the terminal ones often much smaller; areoles i to cm. apart, bearing several acicular nearly white spines i to 6 cm. long, or spineless; flowers yellow, orange or red, about 2 cm. broad; ovary long-tuberculate, 4 to 5 cm. long, about cm. in diameter; petals obovate, apiculate; sta- mens about half as long as the petals; fruit reddish, obovoid or subglobose, 5 to 8 cm. in diameter, spiny or spineless; seeds suborbicular, 6 to 8 mm. in FIGS. 263, 264.—Opuntia rubescens. Tyf>c locality: Cited as Brazil, but erroneously. Distribution: Mona and Porto Rico to Tortola, St. Croix, and Guadeloupe. Culebra, St. Thomas, St. Jan, and Montserrat plants agree with the description of Opuntia rubescens, which clearly belongs with the Spinosissimae (Cruciformes), as pointed out by Berger, rather than with the South American series Inarmatac, where it was placed by Schumann; it is a spineless state of 0. catacantha, as was conclusively proven by us through field observations in the Virgin Islands, and greenhouse plants of 0. rubescens develop spines. Both the spiny and spineless races exhibit remarkable proliferation of the ovaries, these often forming chains of several
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