532. - CACTACEA. 
389. Echinocactus grandicornis, Lem. Cact. Gen. et Sp. Nov. Hort. Monv. p. 30. 
Sours Mexico, Zimapan (Ehrenberg). 
40. Echinocactus hematochroanthus, Mihlpf. in Otto & Dietr. Allg. Gartz, 
xiv. p. 371. | 
Mexico. 
41. Echinocactus helophorus, Lem. Cact. Gen. et Sp. Nov. p. 12. 
NortH Mexico, received from San Luis Potosi (Ehrenberg). | 
42. Echinocactus heteracanthus, Miihlpf. in Otto & Dietr. Allg. Gartz. xiii. 
_ p. 845; Walp. Rep. v. p. 814. 
Mexico, Real del Monte (ex Miihlenpfordt). 
43. Echinocactus hexacanthus, Miihlpf. in Otto & Dietr. Allg. Gartz. xiv. 
p. 369. 
Mexico. 
44, Hchinocactus hexzdrophorus, Lem. Cact. Gen. et Sp. Nov. Hort. Monv. 
p. 27; Bot. Mag. t. 4311. 
Echinocactus fossulatus, Scheidw. ex Salm Dyck, Cact. ed. 2, p. 34. 
Norra Mexico, San Luis Potosi (Ehrenberg). Hort. Kew. 
45. Echinocactus hexeedrus, Scheidw. in Bull. Acad. Brux. vi. p. 3. 
Norra Mexico, San Luis Potosi. 
46. Kchinocactus heyderi, A. Dietr. in Otto & Dietr. Allg. Gartz. xiv. p. 170. 
MExIco. 
47, Echinocactus histricacanthus, Lem. Cact. Gen. Nov. Hort. Mony. p. 17. 
Nortn Mexico, received from San Luis Potosi (Ehrenberg). Hort. Kew. 
48. Echinocactus histrix, DC. Rev. Cact. p. 115. 
Mexico, without locality (Coulter). 
Pfeiffer refers this, with a query, to L. oxypterus, Zuce. 
49, Echinocactus hookeri, Mihlpf. in Otto & Dietr. Allg. Gartz. xiii. p. 345; 
Walp. Rep. v. p. 811. 
Sout Mexico, Real del Monte (ex Mihlenpfordt). 
50. Echinocactus horizonthalionis, Lem. Iconog. Cact. livr. 2; Engelm. Cact. 
U.S. et Mex. Bound. Surv. p. 26, t. 31 et 32. figg. 1-5. 
Echinocactus equitans, Scheidw. ex Scheer in Seem. Bot. Voy. ‘ Herald,’ p. 290. 
Trexas.—Norra Mexico, near Chihuahua (Potts). 
Var. p. curvispina, Salm Dyck, Scheer in Seem. Bot. Voy. ‘ Herald,’ p. 290. 
Nort Mexico, abundant in sandy plains, Chihuahua (Potts). 
