Cereus. Echinocactus.] CACTACEZ. 399 
C. procumbens. Engelm. in Gray, Pl. Fendl. 50; Gray, Pl. Lindh. 203; Syn. 
* Cact. 286 (30); Cact. Mex. Bound. 38, t. 59, f. 1-11. Walp. Ann. 2. 683 & 5. 46. 
Young, Fl. Texas, 275. 
C. Reetteri. Engelm. Cact. Mex. Bound. 33, t. 41, f. 3-5; Proc. Am. Acad. 
3. 345. 
C. dasyacanthus, var. minor. Engelm. Syn. Cact. 279 (28). 
C. rufispinus. Engelm. in Gray, Pl. Fendl. 50; Syn. Cact. 280 (24). Salm, Cact. 
Hort. Dyck. 193. Lab. Monogr. Cact. 820. Walp. Ann. 5. 43. (Chihuahua.) 
Echinocereus rufispinus. Engelm. in Wisliz. Rep. 20. Walp. Ann. 3. 896. 
C. Schottii. Engelm. Syn. Cact. 288 (82); Cact. Mex. Bound. 44, t. 74, f.16 
(seed); Bot. Calif. 1.247. Walp. Ann. 5. 47. 
C. 2 Bigelow, Pac. R. Rep. 4. 387. 
C. stramineus. Engelm. Syn. Cact. 282 (26); Cact. Mex. Bound. 35, t. 46, 47, 
48,f.1. Bigelow, 1. c. 36. Walp. Ann. 5. 44. 
C. Thurberi. Engelm. in Am. Journ. Sci. 2. 17. 284; Syn. Cact. 288 (382); Cact. 
Mex. Bound. 44, t. 74, f. 15 (seed); Fl. Calif. 1. 247. Thurber, in Gray, Pl. 
Thurb. 302. Walp. Ann. 5. 47. Fl. Serres, 10. 29. 
C. rriancutaris, Haworth? Chapman, 144. 
C. triglochidiatus. Engelm. in Gray, Pl. Fendl. 50 & 51; Syn. Cact. 288 (27). 
Walp. Ann. 5. 45. Engelm. & Bigel. in Pac. R. Rep. 4. 34, t. 4, f. 6, 7. 
Echinocereus triglochidiatus. Engelm. in Wisliz. Rep. 9. Walp. Ann. 3. 895. 
C. tuberosus. Poselger, Allg. Gart. Zeit. 21. 135. Engelm. Syn. Cact. 286 
(80); Cact. Mex. Bound. 39 & 76, t. 59,f.12. Walp. Ann. 5.46. Young, FI. 
Texas, 275. 
C. viridiflorus. Engelm. in Gray, Pl. Fendl. 50; Syn. Cact. 278 (22); Trans. 
Acad. St. Louis, 2.199; King’s Rep. 5.118; Simpson’s Rep. 440. Salm, Cact. 
Hort. Dyck. 192. Lab. Monogr. Cact. 319. Walp. Ann. 5. 42. Bigelow, Pac. 
R. Rep. 4. 32 & 36. Young, Fl. Texas, 275. Watson, Pl. Wheeler, 9. Porter, 
F). Col. 48. 
Echinocereus viridiflorus. Engelm. in Wisliz. Rep. 7. Walp. Ann. 3. 895. 
Var. cylindricus. Engelm. Cact. Mex. Bound. 28, t. 36; Syn. Cact. 1. c. Walp. 
Ann. 5. 42. 
C. Californicus ; Opuntia serpentina. C. pheniceus ; conoideus. 
coccineus ; phoeniceus. Pottsii ; Greggii. 
concolor ; ceespitosus. Reichenbachianus ; cespitosus. 
dasyacanthus ; Reetteri. Remeri ; conoideus, pheeniceus. 
deflexispinus ; dasyacanthus. variabilis & Vasmerii ; princeps. 
pectinatus ; czespitosus. 
pectiniferus ; pectinatus. 
2; Schottii. 
‘“ECHINOCACTUS bicolor. Galeotti; Pfeiffer, Abbild. Cact. 2, t.25. Salm, 
Cact. Hort. Dyck. 173. Lab. Monogr. Cact. 259. Scheer, Seem. Bot. Herald, 291. 
Young, Fl. Texas, 280. (Northern Mexico.) 
Var. Schottii. Engelm. Syn. Cact. 277 (21); Cact. Mex. Bound. 27. Walp. 
Ann. 5. 41. 
E. brevihamatus. Engelm. Syn. Cact. 271 (15); Cact. Mex. Bound. 19, t. 18, 
19; Simpson’s Rep. 437. Walp. Ann. 5. 38. 
