538 CACTACEA. 
105. Echinocactus spherocephalus, Muhlpf. in Otto & Dietr. Allg. Gartz. 
xiv. p. 370. 
Mexico. 
106. Echinocactus spina-christi, Zucc. in Pfeiff. Enum. p. 59. 
Mexico t—and Brazi. 
See note under Melocactus ferox. 
107. Echinocactus spiralis, Karw. in Pfeiff. Enum. p. 60. 
Echinocactus stellaris et robustus, Karw., ex Pfeiff. loc. cit. 
Mexico (Karwinskt). 
108. Echinocactus subuliferus, Link et Otto in Verhandl. des Gartenb. -Vereins 
fiir Preuss. iii. p. 427, t. 27. 
~ MExico. 
109. Echinocactus sulphureus, Dietr. in Otto & Dietr. Allg. Gartz. xiii. 
p. 170. 
Soutna Mexico, near Toliman (Lhrenberg). 
110. Echinocactus tenuispinus, Link et Otto in Verhandl. des Gartenb.-Vereins 
fiir Preuss. p. 421. 
Echinocactus ottonis, Lehm., var. 8, Pfeiff. Enum. p. 48. 
_ Mexico? 
111. Echinocactus tetracentrus, Lem. Cact. Gen. et Sp. Nov. Hort. Monv. 
p. 3l. 
MEXICO. 
112. Echinocactus texensis, Hopf. in Otto & Dietr. Allg. Gartz. 1847, 
p. 297. 
Echinocactus lindheimeri, Engelm. Pl. Lindh. et Synops. Cact. U.S. &c. p. 20. 
Echinocactus courantianus, Lem., ex Labour. Cact. p. 196. 
Trexas.—NORTH-EASTERN Mexico, Saltillo (ex Engelmann). Hort. Kew. 
113. Echinocactus theloides, Salm Dyck in Otto & Dietr. Allg. Gartz. xviii. 
p. 395. 
Mexico. 
114. Echinocactus thrincogonus, Lem. Cact. Gen. et Sp. Nov. Hort. Monv. 
p- 22. 
MEXICco. 
115. Echinocactus tribolacanthus, Monv. Cat. 1846, ex Labour. Cact. 
p. 221. 
Mexico ¢ 
