416 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
Cephalocereus chrysacanthus (Weber). 
Pilocereus chrysacanthus Weber; Schum, Gesamtb. Kakteen 178. 1899. 
Cereus chrysacanthus Orcutt, West. Am. Scientist 13: 63. 1902. 
Type Locauity: Near Tehuacan, Mexico. 
Distripution: Type locality and vicinity. 
IuLusrrations: MacDougal, Bot. N. Am. Deserts pl. 17 in part. 
Cephalocereus colombianus Rose, sp. nov. Piates LXIT, LXIII. 
Tree, 5 to 6 meters high, more or less branched throughout, the branches nearly 
erect; ribs 8, obtuse; spines very many, 25 or more, long and slender; wool from the 
areoles long and white, produced for 1 meter down from the top; flowers 7 cm. long, 
smooth, pale pink. 
Collected by H. Pittier at Venticas del Dugua, Western Cordillera of Colombia 
in the State of Cauca, altitude 600 to 900 meters, February 22, 1906, type; also by 
W. R. Maxon at Puerto, Colombia (no. 3845). To be looked for in Panama. 
Described from photographs and a living specimen, 
EXPLANATION OF PLATES LXII, LXIII.—Pl. LXIT, plant. Pl. LXIII cross section and portion of 
surface showing spines; flower and bud. Both from photographs taken by H. Pittier. 
Cephalocereus cometes (Scheidw. ). 
Cereus cometes Scheidw. Allg. Gartenz., 8: 3839, 1840. 
Pilocereus jubatus Salm-Dyck, Cact. Hort. Dyck. 24. 1845. 
Cereus flavicomus Salm-Dyck, Cact. Hort. Dyck. ed. 2. 202. 1850. 
Pilocereus cometes Mittl.; Forst. Handb. Cact. 357. 1846, as synonym. 
Pilocereus flavicomus Salm-Dyck; Riimpl. Forst. Handb. Cact. ed. 2. 658. 1886. 
Type Locauiry: Near San Luis Potosf, Mexico. 
Disrrinution: San Luis Potosi, Mexico. 
Cephalocereus hermentianus (Monv.). 
Cereus hermentianus Mony. Ill. Hortic. 6: mise. 90. 1859. 
Pilocereus hermentianus Lem.; Weber in Bois, Dict. Hort. 965. 1898. 
Type Locaity: Not cited. 
Disrripution: Haiti, according to Weber. 
Described as having about 19 ribs. 
Cephalocereus hoppenstedtii (Weber) Schum. in Engl. & Prantl, Pflanzenfam. 
3: 181. 1894. 
Pilocereus hoppenstedtii Weber, Cat. Piersdortt. 1864. 
Cereus hoppenstedtti Berger, Ann. Rep. Mo. Bot. Gard. 16: 70. 1905. 
TYPE LocALity: Zapotitlan, near Tehuacin, Mexico. 
Disrrisution: Type locality and vicinity. 
Cephalocereus keyensis sp. nov. 
Plant 5 to 6 meters high, much branched, the branches almost erect, 5 to 6 cm. in 
diameter, the trunk up to 12 cm. thick; ribs 9 or 10, narrow, separated by deep 
grooves, blue green, very glaucous; areoles 1 to 2 cm. apart, slightly elevated; spines 
about 15, acicular, yellow, diverging, 1.5 cm, long or less; wool very short, less than 
1 mm. long, white, turning grayish; flowers brownish purple, narrowly campanulate, 
6 cm. long, with a strong odor of garlic when opening in the late afternoon or even- 
ing, odorless the next morning; outer perianth segments oblong-spatulate, bluntly 
pointed, the inner acutish; style scarcely exserted; fruit depressed-globose, reddish, 
3.5 em. thick, about 2 em. high. 
Hammock, Key West, Florida, N. L. Britton, April 7, 1909, no. 518, type; flowers 
collected also on Key West by A. H. Curtiss in 1885, and many years before by Dr. 
Blodgett. Doubtfully recorded by Dr. Chapman @ as C. monoclonos DC., but the 
flowers described by him are those of Harrisia. 
Intusrration: Journ, N. Y. Bot. Gard. 10: f. 25. 
@Southern Flo. 144. 
