. Carnegie Institution of Washington publication. APPENDIX. 219 102 <7. Opuntia pennellii sp. nov. (See page 115, ante.) Plant low; joints i to cm. long, obovate, turgid, bright green; spines i or 2 at each areole, nearly porrect, subulate, cm. long or less, white with dark tips; glochids not very conspicuous, yellowish. Collected near Magangue, coastal plain of Colombia, Department of Bolivar, at about too meters altitude, by Francis W. Pennell in 1918. Figure 286 shows a joint of the type plant. Here may belong herbarium specimens which we have seen from northern Colombia but with


. Carnegie Institution of Washington publication. APPENDIX. 219 102 <7. Opuntia pennellii sp. nov. (See page 115, ante.) Plant low; joints i to cm. long, obovate, turgid, bright green; spines i or 2 at each areole, nearly porrect, subulate, cm. long or less, white with dark tips; glochids not very conspicuous, yellowish. Collected near Magangue, coastal plain of Colombia, Department of Bolivar, at about too meters altitude, by Francis W. Pennell in 1918. Figure 286 shows a joint of the type plant. Here may belong herbarium specimens which we have seen from northern Colombia but with the material at hand it is impossible to determine them definitely. One of these was collected by William R. Maxon, April 10, 1906 (No. 3849) at Puerto Colombia. This plant is described as consisting of 3 to 6 joints, branching at the third or fourth joint, the joints all being in one place. The flowers are yellow and small, only about 4 cm. long, including the ovary. Another was collected by H. H. Smith near Bonda in 1898-1899 (No. 2728); this has joints very similar to those of Dr. Pennell's plant. It is said to be from 2 to 4 feet FIG. 285.— Opuntia guatemalensis. FIG. 286.—Opuntia pennellii. FIG. 287.—Opuntia caraca^ana. 103 a. Opuntia caracasana Salm-Dyck, Cact. Hort. Dyck. 1849. 238. 1850. (See page 116, ante.) Stems low, bushy, 4 to 12 dm. high; joints oblong, 10 to cm. long, turgid, pale green, "leaves squamifonn, minute"; spines 2 to 4, unequal, to 4 cm. long or less, pale yellow; flowers and fruit unknown. Type locality: Near Caracas, Venezuela. Distribution: Mountains about Caracas, Venezuela. The type specimens were collected near Caracas by E. Otto, prior to 1849. Dr. Rose found the plant abundant above Caracas in 1916. It usually grows on exposed hillsides near the top of the divide which separates Caracas from the coast, and it was especially common along the railroad just below the little station of Zig Zag. Se


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