536 CACTACER. 
| 85. Echinocactus pectiniferus, Lem. Cact. Gen. et Sp. Nov. p. 25; Bot. Mag. 
t. 4190. 
Norra Mexico, San Luis Potosi (Staines). 
86. Kchinocactus pfeifferi, Zucc. in Act. Acad. Bavar. 1837, ii. P 724, t. 5; 
Pfeiff. Enum. p. 58; Pfeiff. & Otto, Abbild. ii. t. 2. 
Echinocactus mamillarioides, Hook. 
Echinocactus theiacanthus, Lem. Cact. Gen. &c: p. 86. 
Echinocactus theionacanthus, Lem. Cact. Nov. fasc. i. p. 20. | 
SourH Mexico, on rocks near Toliman (Karwinski), near Jicuico, Mestitlan, Toliman, 
and Zimapan (ex ELhrenberg). Hort. Kew. 
87. Echinocactus phyllacanthus, Mart. in Otto & Dietr. Allg. Gartz. 1836, 
p- 201; Pfeiff. & Otto, Abbild. i. t. 9. 
Echinocactus phyllantoides, Lem., ex Labour. Cact. p. 211. 
Sout Mexico, near Pachuca, above 6000 feet (Karwinski), Mestitlan (Ehrenberg). 
88. Echinocactus pilosus, Galeotti in Salm Dyck, Cact. ed. 2, p. 148. 
Echinocactus piliferus, Lem., ex Labour. Cact. p. 186. 
Mexico? Hort. Kew, 
89. Echinocactus platyacanthus, Link & Otto, in Verhandl. des Gartenb.- 
Vereins fiir Preuss. iii, p. 423, t. 14; Pfeiff. Enum. p. 59. 
Mexico (Schiede), near Actopan, Ismiquilpan, Zimapan, Mestitlan, &c. (ex Ehrenberg). 
90. Echinocactus platyceras, Lem. Cact. Hort. Monv., ex Labour. Cact. 
p. 192; Salm Dyck, Cact. ed. 2, p. 147. | 
Mexico, Actopan, Zimapan, &c. (ex Khrenberg). Hort. Kew. 
Ehrenberg (Linnea, xix. p. 356) seems to have regarded this and EL. karwinskii, Lem., 
as the same as E. platyacanthus. 
91. Echinocactus pottsii, Salm Dyck, in Otto & Dietr. Allg. Gartz. 1850; 
Scheer, in Seem. Bot. Voy. ‘ Herald,’ p. 291. 
Nortu Mexico, Chihuahua (Potts). 
92. Echinocactus porrectus, Lem., ex Labour. Cact. p. 262; Salm Dyck, Cact. 
ed. 2, p. 172. 
MEXxIco. 
93. Echinocactus polycephalus, Engelm. & Bigelow, in Pacif. Railr. Rep., et 
in Cact. U.S. & Mex. Bound. Surv. p. 25. 
CaLirorNia.—NortH Mexico, Sonora (Schott). 
94, Mchinocactus pruinosus, Otto, ex Pfeiff. Enum. p. 54. 
Cereus pruinosus, Salm Dyck, Cact. ed. 2, p. 47. 
MEXICO. 
