. Carnegie Institution of Washington publication. THE CACTACEAE. 35. Cephalocereus royenii (Linnaeus) Britton and Rose, Contr. U. S. Nat. Herb. 12: 419. 1909. I'uctiis niyenii Linnaeus, Sp. PI. 467. 1753. CcrcHs nivrnii Miller, Gard. Diet. ed. S. No. 7. 1768. tVn' fidmspinosus Haworth, Syn. PI. Succ. 183. 1812. ('ui fulvispinosus Sprengel, Syst. 2: 496. 1825. Cereus floccosus Otto in Pfeiffer, Enum. Cact. 81. 1837. Cereus tiriiintiis Otto in Pfeiffer, Enum. Cact. 81. 1837. Pilocereus floccosus Lemaire, Illustr. Hort. 13: under pi. 470. 1866. Cereus leiocurpiis Bello, Anal. Soc. Esp. Hi
. Carnegie Institution of Washington publication. THE CACTACEAE. 35. Cephalocereus royenii (Linnaeus) Britton and Rose, Contr. U. S. Nat. Herb. 12: 419. 1909. I'uctiis niyenii Linnaeus, Sp. PI. 467. 1753. CcrcHs nivrnii Miller, Gard. Diet. ed. S. No. 7. 1768. tVn' fidmspinosus Haworth, Syn. PI. Succ. 183. 1812. ('ui fulvispinosus Sprengel, Syst. 2: 496. 1825. Cereus floccosus Otto in Pfeiffer, Enum. Cact. 81. 1837. Cereus tiriiintiis Otto in Pfeiffer, Enum. Cact. 81. 1837. Pilocereus floccosus Lemaire, Illustr. Hort. 13: under pi. 470. 1866. Cereus leiocurpiis Bello, Anal. Soc. Esp. Hist. Nat. 10: 276. 1881. Pilocereus barbalus Rebut in Forster, Handb. Cact. ed. 2. 650. 1885. Pilocereus royenii Rtimpler in Forster, Handb. Cact. ed. 2. 682. 1885. Pili'iereus royeni armatus Salm-Dyck in Forster, Handb. Cact. ed. 2. 682. 1885. Pilocereus strictus fouackianus Schumann, Gesamtb. Kakteen 190. 1897. Piloccreiis fiih'ispinosus Schumann, Gesamtb. Kakteen 196. 1897. Pilocereus fouachianus Weber in Gosselin, Bull. Mus. Hist. Nat. Paris 10: 386. 1904. Cereus fouachianus Vanpel, Monatsschr. Kakteenk. 23: 25. FIG. 73.—Cephalocereus lanuginosus. FIG. 74.—Cephalocereus royenii. Stout, 2 to 8 meters high or more, either branching near the base or with a short definite trunk up to 3 dm. in diameter; branches stout, erect or ascending, glaucous, green to blue; ribs 7 to u, high; areoles close together; spines acicular, very variable, often only i cm. long, but sometimes 6 cm. long, yellow; young areoles bearing soft wool; flowering areoles producing tufts of long white hairs; flowers about 5 cm. long, greenish yellow to purplish; inner perianth-segments white, acute; fruit reddish or green, 5 cm. broad; pulp red; seeds black, shining. Type locality: America, but no definite locality cited. Distribution: Antigua to Anegada, St. Croix, vSt. Thomas, Culebra, Porto Rico, Mona, and Desecheo. Philip Miller states that this species was sent to him from the British Islands
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