. Annual report of the Board of Regents of the Smithsonian Institution . Fig. .i. —Ielccyiiliora pectinata(enlarged (5 diameters). Fig. ti.—Iilicvpliora aselliiormis(slightly reduced). Types of Mamillaria and Pelecyphora. Smithsonian Report, 1908.—Safford. Plate 15. W^ ^ in ^ ^EsB 1 ^^1 1 mni H Fig. ].—Arioparpiis Fii;. 2.—Ariocarpiis retusus and Ariocarpus FURFURACEUS. CACTACE^ OF MEXICO SAFFORD. 563 closely allied Mamillaria.* At the apex of the tubercles there is amore or less distinct wool-bearing areole. The flowers appear fromnear the center of the p
. Annual report of the Board of Regents of the Smithsonian Institution . Fig. .i. —Ielccyiiliora pectinata(enlarged (5 diameters). Fig. ti.—Iilicvpliora aselliiormis(slightly reduced). Types of Mamillaria and Pelecyphora. Smithsonian Report, 1908.—Safford. Plate 15. W^ ^ in ^ ^EsB 1 ^^1 1 mni H Fig. ].—Arioparpiis Fii;. 2.—Ariocarpiis retusus and Ariocarpus FURFURACEUS. CACTACE^ OF MEXICO SAFFORD. 563 closely allied Mamillaria.* At the apex of the tubercles there is amore or less distinct wool-bearing areole. The flowers appear fromnear the center of the plant, springing from the midst of a tuft ofwool. They are white or delicately rose tinted, with the petalsmarked by a median stripe. The ovary and fruit are naked, theseeds comparatively large and tuberculated.^ Among the species thus far known to science are Ariocarpus fissu-ratus, sometimes called the living rock, with the surface of thetubercles grooved and warty; A. kofschuheyanus (pi. 3, fig. 4), calledpezufia de venado, with rose-colored flowers, and small delta-shapedtubercles marked by a median longitudinal groove; A. retusus, orcobblers thumb (pi. 15, fig. 1), with sharp pyramidal tubercles(sometimes called ^4. prismaticus); and A. furfuraceiis (pi. 15, fig. 2),with abruptly acuminate triangular tubercles, so
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Keywords: ., bookauthorsmithsonianinstitutio, bookcentury1800, bookdecade1840
