APPENDIX. 



269 



On page 44, vol. 11, under Cephalocereus nohilis, add the synonyms Cereus polyptychus 

 Lemaire, Cact. Gen. Nov. Sp. 56. 1839; Pi/ocerew5 polyptychtis Riimpler in Forster, Handb. 

 Cact. ed. 2. 680. 1885. 



Insert : The plant upon which this name was based was a small, barren one of unknown 

 origin. 



Insert: Pilocereus houlletianus niger (Forster, Handb. Cact. ed. 2. 676. 1885) is only 

 a name given as a synonym of P. niger, while P. niger aureus is briefly described on the 

 same page. 



Add to illustrations: Mollers Deutsche Gart. Zeit. 25 : 473. f. 5, No. 4, as Pilocereus curtisi. 



On page 47, vol. 11, under Cephalocereus polygonus, add the synonym: Cephalocereus 

 schlumbergeri Urban, Symb. Antill. 8: 464. 1920. 



On page 49, vol. 11, under Cephalocereus lanuginosus, add the synonym: Pilocereus 

 lanuginosus virens Salm-Dyck in Forster, Handb. Cact. ed. 2. 672. 1885. 



Insert: Curran reports that this fruit is edible (Inventory No. 50. p. 50. U. S. Dept. 

 Agr. Bur. Plant Industry). 



On page 51, vol. 11, under Cephaloceretis royenii, add to illustrations: Journ. N. Y. 

 Bot. Gard. 15: pi. 133, 134. 



On page 52, vol. 11, under Cephalocereus leucocephalus, add to illustrations: Watson, 

 Cact. Cult. 145. f. 56; Deutsche Gart. Zeit. 7:312, as Pilocereus houlletianus; Gard. Chron. 

 III. 29: f. 79, as P. houlletianus leucocephalus; Mollers Deutsche Gart. Zeit. 25: 473. f. 5, 

 No. 14, as P. cometes; De Laet, Cat. Gen. No. 51, 52, 53; Mollers Deutsche Gart. Zeit. 

 25: 473. f. 5, No. 7; Bliihende Kakteen 2: pi. 79; West Amer. Sci. 13: 24; Schelle, Handb. 

 Kakteenk. loi. f. 40. as P. houlletii; Gard. Chron. iii. 32: 253, as Cereus houlleti. 



On page 56, vol. 11, under Cephalocereus 

 purpusii, insert : Wilhelm Weingart, under date 

 of June 18, 1 92 1, wrote of this species as 

 follows : 



"Cephalocereus purpusii sp. nov. was collected 

 by C. A. Purpus in 1902 near Mazatlan, was sent 

 to me February 18, 1907, and bloomed in Darm- 

 stadt in 1918." 



Figures 240 and 241 are reproduced from 

 a drawing furnished by Wilhelm Weingart. 



On page 56, vol. 11, under Cephaloceretis 

 ratingicola, add to illustrations: Vegetations- 

 bilder 6: pi. 14, as Cereus catingicola; Engler, 

 Bot. Jahrb. 40: Suppl. pi. 5, as C. catingae. 



On page 58, vol. 11, insert: 



49. Cephalocereus collinsii sp. nov. 



About 3 meters high with few slender, elongated 

 branches, these 3 to 4 cm. in diameter; ribs about 

 7, obtuse; tubercles about 1.5 cm. apart, circular, 

 long-woolly as well as spiny; flowering areoles not much more woolly than the others; spines 

 numerous, acicular, longer ones 3 to 4 cm. long; flowers borne near ends of branches, about 5 cm. 

 long; fruit somewhat depressed, about 3 cm. broad; seed shining, black, 1.5 to 2 mm. broad. 



Common in thickets near Tehuantepec, Oaxaca, Mexico. The type was collected 

 by Dr. C. A. Purpus near Geronimo in April 1923. It was reported by O. F. Cook and G. 

 N. Collins from this region in 1902. The plant is named for Mr. Collins, who first brought it 

 to our attention more than 20 years ago while carrying on field work in southern Mexico 

 for the U. S. Department of Agriculture. 



Figs. 240. 241. — Cephalocereus purpusii, flower. 



