. Carnegie Institution of Washington publication. 33 CEPHALOCEREUS. 9. Cephalocereus euphorbioides (Haworth). Cerctts euphorbioides Hawnrth, Suppl. PI. Succ. 75. 1819. Caclus euphorbioides Sprengel, Syst. 2: 496. 1825. Pilocereus euphorbioides Riimpler in Forster, Handb Cact ed 2. 658. 1885. Plant 3 to 5 meters high, columnar, usually simple; ribs 8, acute, somewhat crenate; areoles less than i cm. apart, white- felted; spines few, sometimes only 4 or 5, and then only i prom- inent, dark brown, porrect, about i cm. long; ovary 2 cm. long, spirally tuberculate; tubercles bearing triangular scal
. Carnegie Institution of Washington publication. 33 CEPHALOCEREUS. 9. Cephalocereus euphorbioides (Haworth). Cerctts euphorbioides Hawnrth, Suppl. PI. Succ. 75. 1819. Caclus euphorbioides Sprengel, Syst. 2: 496. 1825. Pilocereus euphorbioides Riimpler in Forster, Handb Cact ed 2. 658. 1885. Plant 3 to 5 meters high, columnar, usually simple; ribs 8, acute, somewhat crenate; areoles less than i cm. apart, white- felted; spines few, sometimes only 4 or 5, and then only i prom- inent, dark brown, porrect, about i cm. long; ovary 2 cm. long, spirally tuberculate; tubercles bearing triangular scales sparingfy woolly in their axils, with i to 4 yellow spines; perianth-tube fun- nelform, campanulate, cm. long; outer perianth-segments 15 mm. long, fleshy, reflexed, brown or reddish brown, the inner ones 2 cm. long, reflexed, rose-red; flowers diurnal. Type locality: Not cited. Distribution: The Index Kewensis says South Amer- ica; Schumann says Brazil, not Mexico; Riimpler says Mexico and tropical America. Known to us only from cultivated specimens. Riimpler refers here Corns conicus Hort. Berol. (Pfeiffer, Enum. Cact. 97. 1837), which Pfeiffer states is from Mexico. Ccrcus oljersii Salm-Dyck (Hort. Dyck. 335. 1834) probably belongs here. The Theodosia B. Shepherd Company, in their Descriptive Catalogue for 1916, describes briefly Cercus olj'crsii from Brazil as follows: "A magnifi- cent Ccrcus, exceedingly stout growth; color light blue; beautiful spines which are jet black and very ; Ccrcus polylophus is very similar in its habit and flowers to this species. Although Haworth did not know its origin, it is usually stated to have come from Brazil. In habit it resembles Ccphaloccrcns fliiininciisis. Illustrations: Monatsschr. Kakteenk. 17: 89, as Pilo- cereus euphorbioides; Rev. Hort. 57: 279. f. 47, 48, as Cereus oljersii. Figure 35 is from a photograph of a plant in the New York Botanical Garden. 10. Cephalocereus russelianus KUto) Rose, Stand. Cycl. Ho
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