400 CACTACE^. [Echinocactus. 



E. Californicus. INIonvillc, Cat. 1846. Lab. Monogr. Cact. 199. Engelm. in 

 Am. Journ. Sci. 2. 14. 338. (Lower California ?) 



E. cylindraceus. Engelm. Pac. R. Eep. 4. 32; Syn. Cact. 275 (19) ; Cact. INIex. 

 Bound. 2.5, t. 30 ; Bot. Calif. 1. 245. Walp. Ann. 5. 40. Fenzi, Bull. Soc. Tosc. 

 Ortic. 2. 54, f. 7. 



E. viridcscens, var. (?) cylindraceus. Engelm. in Am. Journ. Sci. 2. 14. 3.38. 

 E. Emoryi. Engelm. in Emory's Rep. 156, f. 5; Syn. Cact. 275 (19) ; Cact. Mex. 

 Bound. 23, t. 28; Bot. Calif. 1. 245. Engelm. & Bigel. Pac. R. Rep. 4. 31, t. 3, 

 f. 3. Walp. Ann. 5. 40. 



E. horizonthalonius. Lemaire, Cact. Nov. 19. "Walp. Rep. 2. 317. Salm, Cact. 

 Hort. Dyck. 146. Lab. Monogr. Cact. 179. Engelm. Cact. Mex. Bomid. 75. 

 E. equitans. Scheidweil, Bull. Brux. 6-. 2. Walp. Rep. 2. 323. 



Var. centrispinus. Engelm. Syn. Cact. 276 (20) ; Cact. Mex. Bound. 26, t. 31, 

 32, f. 1-5. Walp. Ann. 5. 41. 



E. laticostatus. Engelm. & Bigel. Pac. R. Rep. 4. 32. 



E. intertextus. Engelm. Syn. Cact. 277 (21) ; Cact. Mex. Bound. 27, t. 34. Walp. 

 Ann. 5. 41. 



Var. dasyacaiithus. Engelm. Syn. Cact. 1. c. ; Cact. Mex. Bound. 28, t. 35, 

 £ 1-5. Walp. 1. c. 



E. Johnsoni. Parry ; Engelm. in King's Rep. 5. 117. 



E. longihamatus. Galcotti ; Pfeiffer, Abbild. Cact. 2, 1. 16. Salm, Cact. Hort. 

 Dyck. 152. Lab. Monogr. Cact. 201. Hook. Bot. INIag. t. 4632. Sclieer, Seem. 

 Bot. Herald, 290. Engelm. Syn. Cact. 273 (17); Cact. Mex. Bound. 22 & 75, 

 t. 21-24. Walp. Ann. 5. 39. 



E. flexispinus. Engelm. in Wisliz. Rep. 27. Walp. Ann. 3. 894. 



E. setispinus, var. hngehamatus. Poselger, Allg. Gart. Zeit. 21. 119. 

 Var. gracilispinus. Engelm. Syn. Cact. 1. c. ; Cact. Mex. Bound. 22. Walp. 

 Ann. 5. 40. 



E. hamatocanthus. Mulilenpf. in Allg. Gart. Zeit. 14. 371. Walp. Ann. 1. 33-3. 



Var. brevispinus. Engelm. II. cc. Walp. 1. c. 

 E. papyracanthus. Engelm. Trans. Acad. St. Louis, 2. 202; Simpson's Rep. 

 437. 



MamiUaria papyracantha. Engelm. in Gray, PI. Fendl. 49; Syn. Cact. 264 (8). 

 Walp. Ann. 2. 680. 



E. Parryi. Engelm. Pac. R. Rep. 4. 32 ; Syn. Cact. 276 (20) ; Cact. Mex. Bound. 

 25, t. 32, f. 6, 7. Walp. Ann. 5. 41. (Chihualiua.) 



E. polyancistrus. Engelm. & Bigel. Pac. R. Rep. 4. 29, t. 2, f. 1, 2. Engelm. 

 Syn. Cact. 272 (16) ; King's Rep. 5. 116; Bot. Calif. 1. 24-5. Walp. Ann. 5. 39. 

 E. polycephalus. Engelm. & Bigel. Pac. R. Rep. 4. 31, t. 3, f. 4-6. Engelm. 

 Syn. Cact. 276 (20) ; Cact. Mex. Bound. 25; King's Rep. 5. 117 ; Bot. Calif. 1. 246. 

 Walp. Ann. 5. 41. Watson, PI. Wheeler, 9. 



E. pubispinus. Engelm. in Trans. Acad. St. Louis, 2. 199; King's Rep. 5. 117; 

 Simpson's Rep. 4.39. 



E. Scheeru. Salm, Cact. Hort. Dyck. 155. Scheer in Seem. Bot. Herald, 290. 

 Lab. Monogr. Cact. 204. Engelm. Syn. Cact. 271 (15) ; Cact. Mex. Bound. 18, 

 t. 17. Walp. Ann. 5. 38. 



E. setispinus. Engelm. in Gray, PI. Lindh. 201 ;^Syn. Cact. 272 (16) ; Cact. Mex. 

 Bound. 21 & 75, t. 20. Dietr. Allg. Gart. Zeit. 16. 18 & 19. 44. Scheele, Roem. 



