The Cactaceae : descriptions and illustrations of plants of the cactus family . ; flow-ers light purple to purplish green;perianth-segments fleshy, usuallyrounded at apex; ovary nearlynaked; fruit not known. Type locality: Sierra del Alo,Mexico. Distribution: Western Mex-ico. The type of the species wascollected by Leon Diguet andis preserved in the Museum ofParis, where it was studied byDr. Rose in 1912. To this spe-cies we would refer specimenscollected in Jalisco, Mexico, in1892, by M. E- Jones. Illustration: Bull. Soc. Ac-clim. France 52: f. 16, as Piloce-reus alensis. 43 Cephalocereus col
The Cactaceae : descriptions and illustrations of plants of the cactus family . ; flow-ers light purple to purplish green;perianth-segments fleshy, usuallyrounded at apex; ovary nearlynaked; fruit not known. Type locality: Sierra del Alo,Mexico. Distribution: Western Mex-ico. The type of the species wascollected by Leon Diguet andis preserved in the Museum ofParis, where it was studied byDr. Rose in 1912. To this spe-cies we would refer specimenscollected in Jalisco, Mexico, in1892, by M. E- Jones. Illustration: Bull. Soc. Ac-clim. France 52: f. 16, as Piloce-reus alensis. 43 Cephalocereus colombianusRose, Contr. U. S. Nat. : 416. 1909. Cereus colombianus Vaupel, Monats-schr. Kakteenk. 23:23. 1913. Plant 5 to 6 meters high, moreor less branched throughout, thebranches nearly erect; ribs 8, ob-tuse; spines many, 25 at an areoleor more, long and slender; wool of the areoles long and white, produced for 1 meter down from the top of the plant; flowers 7 cm. long,smooth, pale pink. Type locality: Venticas del Dagua, : Northwestern Cephalocereus colombiani; 56 the; cactaceae. In our original description we referred here specimens from northern Colombia whichwe now include in Cephalocereus russelianus. Illustrations: Contr. U. S. Nat. Herb. 12: pi. 62, 63. Figure 82 is from a photograph of the plant; figure 83 a. shows a piece of the stem;figure 83 b a cross-section of the stem; figure 83 c a flower; and figure 83 d a flower-bud;all are from photographs of the type specimen by Henry Pittier. 44. Cephalocereus purpusii sp. slender, 2 to 3 meters high, sim-ple or more or less branched; branches green,erect, 3 to 4 cm. in diameter, usually sim-ple; ribs 12, low, 5 to 6 mm. high, separatedby narrow intervals; areoles closely set, 10mm. apart or less on the lower part of thestem, but much closer together toward thetop, on the young growth with long silkywhite hairs, but on old parts without hairs;spines acicular, swollen at base,
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Keywords: ., bookauthorbrittonn, bookcentury1900, bookdecade1910, bookyear1919
