CACTACEA. 535 
74. Echinocactus myriostigma, Salm Dyck, Cact. ed. 2, pp. 29, 155; Bot. 
Mag. t. 4177; Ill. Hort. t. 292. 
Astrophytum myriostigma, Lem. 
Nort Mexico, San Luis Potosi (Ff. Staines). Hort. Kew. 
74*. Echinocactus nodosus, Linke in Koch’s Wochenschrift, i. p. 89. 
MEXIco. 
75. Echinocactus obvallatus, DC. Prodr. iii. p. 462; Rev. Cact. p. 37, t. 9; 
Pfeiff. & Otto, Abbild. ii. t. 22. 
Sour Mxxico, Zimapan, Tepenexcomitl (Ehrenberg). Hort. Kew. 
76. Echinocactus octacanthus, Mihlpf., in Otto & Dietr. Allg. Gartz. xvi. 
p. 10; Walp. Ann. ii. p. 681. 
MEXxIco. 
77. Echinocactus oligacanthus, Mart. in Pfeiff. Enum. p. 53. 
MEXxIco. 
78. Echinocactus ornatus, DC. Rev. Cact. p. 114. 
Echinocactus holopterus, Mig., ex Salm Dyck, Cact. ed. 2, p. 27. 
Echinocactus mirbelii, Lem., ex Salm Dyck, Cact. ed. 2, p. 27. 
Echinocactus tortus, Scheidw., ex Labour. Cact. p. 182. 
SoutH Mexico, Zimapan and Las Ajuntas on the Montezuma river, &c. (Ehrenberg). 
Hort. Kew. 
79. Echinocactus ottonis, Lehm. in Act. Nov. Nat. Cur. xvi. pt. 1, p. 317, t. 18; 
Bot. Mag. t. 3107. 
Mexico ?—Braziu. Hort. Kew. 
80. Echinocactus oxypterus, Zucc. in Pfeiff. Enum. p. 97. 
Sovran Mexico, Santa Rosa de Toliman (Karwinskz). 
81. Echinocactus pachycornis, Mihlpf. in Otto & Dietr. Allg. Gartz. xiv. 
p. 371. 
MEXxIco. 
32. Echinocactus pentacanthus, Lem. Cact. aliq. Nov. Hort. Monv. p. 27. 
SourH Mexico, Pachuca and Los Bafios del Grande (Ehrenberg). 
83. Echinocactus parryi, Engelm. Cact. U.S. & Mex. Bound. Surv. p. 25, t. 32. 
figg. 6, 7. | 
Norra Mexico, desert region south-west of El Paso towards Lake Guzman (Parry, 
Wright, Bigelow). 
34, Echinocactus pentlandii, Hook. Bot. Mag. t. 4124. 
Mexico ? | 
