APPENDIX. 



271 



Also add to illustrations: Zeitschr. Ges. Erdk. 1916: f. 6, in part; Contr. U. S. Nat. 

 Herb. 16: 131, a; 132, a; Karsten and Schenck, Vegetationsbilder 13: pi. 13, as Pachycereus 

 calvus; Contr. U. S. Nat. Herb. 16: pi. 131, b, as P. titan; Ann. Rep. Smith. Inst. 1908: 

 553- f- 17- 



(3- — Pachycereus prinfjle 



On page 71, vol. 11, under Pachycereus pecien-aborig-inum, add to illustrations: Engler 

 and Drude, Veg. Erde 13: 297. f. 9; Watson, Cact. Cult. ed. 2. 246. f. 92; ed. 3. f. 17; 

 Karsten and Schenck, Vegetationsbilder i: pi. 48, as Cereus pecten-aboriginuni; Karsten 

 and Schenck, Vegetationsbilder 13: pi. 14; Contr. U. S. Nat. Herb. 16: pi. 132, b. 



On page 71, vol. 11, under Pachycereus gaumeri, add additional characters: 

 Ribs sometimes only 3, thin, 3 to 4 cm. high; areoles sometimes 2.5 cm. apart; fruit becoming 

 dry, globose, 3 to 4 cm. in diameter, scales at base of fruit small, becoming long and foliaceous 

 above, fleshy at base but tips thin and soon drying black; axils of scales felted, with a cluster of 

 about 8 very short black spines; seeds numerous, brown, 4 mm. long. 



The above description is drawn from specimens sent by Dr. Gaumer to Washington 

 in June 1922. 



On page 73, vol. 11, under Pachycereus chrysomallus, add to illlustrations : Reiche, 

 Elem. Bot. 226. f. 162, as Pilocereus; Mollers Deutsche Gart. Zeit. 29: 297. f. 5; U. S. 

 Dept. Agr. Bur. PI. Ind. Bull. 262: pi. 13, f. i, as Pilocereus fulviceps; Floralia 42: 377; 

 Belg. Hort. 3: pi. 57, as P. chrysomallus; Mollers Deutsche Gart. Zeit. 25: 473. f. 5, No. i. 



On page 74, vol. 11, under Pachycereus marginatus, insert: The two varieties, Cereus 

 marginatus nionstrosus (Monatsschr. Kakteenk. 19: 62. 1909) and C. marginatus cristatus 

 (Monatsschr. Kakteenk. 4: 194. 1894) occur in the trade. 



Also add to illustrations: West Amer. Sci. 13 : 6; Mollers Deutsche Gart. Zeit. 25: 472. 

 f. 2, No. 15; De Laet, Cat. Gen. f. 23; Mollers Deutsche Gart. Zeit. 29: 355. f. 11; Bot. 

 Jahrb. Engler 58: Beibl. 129: 27. f. 9, as C. marginatus; Remark, Kakteenfreund 7; Kar- 

 sten and Schenck, Vegetationsbilder i : pi. 43; 48, as Cereus gemmatus; Ann. Rep. Smiths. 

 Inst. 1908: pi. II, f. 2. 



