402 CACTACEZ. [Mamillaria, 
E. ancylacanthus ; uncinatus. | E. Lindheimeri; Texensis. 
Cachetianus ; setispinus. ° Muhlenpfordtii ; setispinus. 
equitans ; horizonthalonius. pectinatus & pectiniferus ; Cereus pec- 
Jlexispinus & hamatocanthus ; longiha- tinatus. 
matus. Reichenbachii ; Cereus cespitosus. 
hamatus ; setispinus. setispinus ; longihamatus, sinuatus. 
laticostatus ; horizonthalonius. Treculianus ; sinuatus. 
Lecontei ; Wislizeni. viridescens ; cylindraceus. 
MAMILLARIA Arizonica. Engelm. in Watson, Pl. Wheeler, 9; Bot. Calif. 
1. 244. 
M. barbata. Engelm. in Wisliz. Rep. 21; Syn. Cact. 261 (5); Cact. Mex. Bound. 
64, t. 6, f. 9-12; Trans. Acad. St. Louis, 2.201. Salm, Cact. Hort. Dyck. 82. 
Lab. Monogr. Cact. 30. Walp. Ann. 3. 894 & 5. 34. (Chihuahua.) 
M. bicolor. Lehmann, Del. Sem. Hamb. 1830 (Litt.-Ber. zu Linnea, 1831, 11). 
Pfeiffer, Enum. Cact. 27; Abbild. Cact.1,t.3. Walp. Rep. 2. 289; Ann. 5. 35. 
Dietr. 3. 90. Salm, Cact. Hort. Dyck. 89. Lab. Monogr. Cact. 57. Poselger, 
Allg. Gart. Zeit. 21.94. Engelm. Syn. Cact. 263 (7); Trans. Acad. St. Louis, 
2.202. (Mexico.) 
M. nivea. Wendland, Cat. Hort. Herrn. 1835. Pfeiff. 1. ¢. 27. Walp. 1. c. 289. 
M. geminispina. Haworth, Phil. Mag. 63. 42. 
M. calcarata. Engelm. in Gray, Pl. Lindh. 195; Syn. Cact. 267 (11); Cact. Mex. 
Bound. 14, t. 74, f. 1 (seed). Salm, Cact. Hort. Dyck. 181. Lab. Monogr. Cact. 
142. Walp. Ann. 5. 37. 
M. sulcata. Engelm. Pl. Lindh. 246 (38), not Pfeiff. (Allg. Gart. Zeit. 16. 18). 
Torrey, Emory’s Rep. 408. 
M. strobiliformis. Muhlenpf. in Allg. Gart. Zeit. 16. 19 (Bot. Zeit. 6. 597), not 
Scheer. Scheele, Roem. Texas, 435. % 
M. compacta. Engelm. in Wisliz. Rep. 21; Gray, Pl. Lindh. 196; Syn. Cact. 
266 (10); Cact. Mex. Bound. t. 74, f. 2 (seed). Walp. Ann. 3. 894. (Chihuahua.) 
M. conoidea. DC. Rev. Cact. 112; Mém. Cact. 6, t. 2. Pfeiffer, Enum. Cact. 35. 
Walp. Rep. 2. 291. Dietr. 3.92 & 94. Salm, Cact. Hort. Dyck. 104. Pfeiffer, 
Abbild. Cact. 2, t.26. Lab. Monogr. Cact. 86. Engelm. Syn. Cact. 268 (12). 
(Mexico.) 
M. inconspicua. Scheidw. Bull. Acad. Brux. 5. 495. Walp. Rep. 2. 301. 
M. diaphanacantha. Wemaire, Cact. Nov. 39. 
M. echinocactoides. Pfeiffer, Allg. Gart. Zeit. 8. 281. Walp. Rep. 2. 299. 
M. strobiliformis. Engelm. in Wisliz. Rep. 29, not Scheer. Walp. Ann. 3, 894. 
M. dasyacantha. Engelm. Syn. Cact. 268 (12); Cact. Mex. Bound. 15, t. 12, 
f. 17-22. Walp. Ann. 5. 37. 
M. Echinus. Engelm. Syn. Cact. 267 (11); Cact. Mex. Bound. 15, t. 10. Walp. 
Ann. 5. 37. 
M fasciculata. Engelm. in Emory’s Rep. 156, f. 2. 
M. Goodridgii. Scheer; Salm, Cact. Hort. Dyck. 91. Lab. Monogr. Cact. oe. 
Scheer, Seem. Bot. Herald, 286. Engelm. in Am. Journ. Sci. 2. 14. 388; Syn. Cact. 
262 (6); Cact. Mex. Bound. 8, t. 8, f. 9-14; Bot. Calif. 1.243. Walp. Ann. 5. 34. 
M. Grahami. Engelm. Syn. Cact. 262 (6); Cact. Mex. Bound. 7 & 74, t. 6, f. 1-8; 
Pac. R. Rep. 4. 27; Ives’ Rep. 12; King’s Rep. 5. 115; Bot. Calif. 1. 244. Walp. 
Ann. 5. 34. 
?M. microcarpa. Engelm. in Emory’s Rep. 156, f. 3. 
