. Carnegie Institution of Washington publication. Figure 78 shows the type plant as it grows in thickets along the coast at Santa Rosa; figure 79 shows it as it grows in the open below Ayapamba, both from photographs by George Rose; figure 80 shows a flower and figure 81 a fruit collected by Dr. Rose near Ayapamba, Ecuador, in 1918. 42. Cephalocereus alensis (Weber) Britton and Rose, Contr. U. S. Nat. Herb. 12: 415. 1909. Pilocereus alensis Weber in Gosselin, Bull. Mus. Hist. Nat. Paris 11:508. 1905. Cereus alensis Vaupel, Monatsschr. Kakteenk. 23: 23. 1913. FIG. 80.—Flower of C. tweedyanus. X
. Carnegie Institution of Washington publication. Figure 78 shows the type plant as it grows in thickets along the coast at Santa Rosa; figure 79 shows it as it grows in the open below Ayapamba, both from photographs by George Rose; figure 80 shows a flower and figure 81 a fruit collected by Dr. Rose near Ayapamba, Ecuador, in 1918. 42. Cephalocereus alensis (Weber) Britton and Rose, Contr. U. S. Nat. Herb. 12: 415. 1909. Pilocereus alensis Weber in Gosselin, Bull. Mus. Hist. Nat. Paris 11:508. 1905. Cereus alensis Vaupel, Monatsschr. Kakteenk. 23: 23. 1913. FIG. 80.—Flower of C. tweedyanus. —Fruit of same. Xo-5- Erect, sometimes 5 to 6 meters high, branching from the base; branches rather slender, spreading, 12 to i4-ribbed, the ribs some- what tuberculate; spines 10 to 14, acicular, about i to cm. long, brownish; flowering areoles on one side of the stem, developing white or yellowish hairs 5 cm. long; flow- ers light purple to purplish green; perianth-segments fleshy, usually rounded at apex; ovary nearly naked; fruit not known. Type locality: Sierra del Alo, Mexico. Distribution: Western Mex- ico. The type of the species was collected by Leon Diguet and is preserved in the Museum of Paris, where it was studied by Dr. Rose in 1912. To this spe- cies we would refer specimens collected in Jalisco, Mexico, in 1892, by M. E. Jones. Illustration: Bull. Soc. Ac- clim. France 52: f. 16, as Piloce- reus alensis. 43 Cephalocereus colombianus Rose, Contr. U. S. Nat. Herb. 12: 416. 1909. Cereus colombianus Vaupel, Monats- schr. Kakteenk. 23: 23. 1913. Plant 5 to 6 meters high, more or less branched throughout, the branches nearly erect; ribs 8, ob- tuse; spines many, 25 at an areole or more, long and slender; wool of the areoles long and white, produced for i meter down from the top of the plant; flowers 7 cm. long, smooth, pale pink. Type locality: Venticas del Dagua, Colombia. Distribution: Northwestern FIG. 82.—Cephalocereus colombianus.
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Keywords: ., bookauthorcarnegie, bookcentury1900, bookdecade1900, bookyear1902
