Mamillaria. Opuntia.] CACTACES. 405 
M. fissurata; Anhalonium fissuratum. M. radiosa ; vivipara. 
geminispina ; bicolor. recurvispina ; recurvata. 
hemispherica ; Heyderi. similis & simplex ; Missouriensis. 
inconspicua ; conoidea. stellaris ; pusilla. 
microcarpa ; Grahami. strobiliformis ; calcarata, conoidea. 
Missouriensis ; vivipara. sulcata; calcarata. 
nivea ; bicolor. tetrancistra ; phellosperma. 
Nuttallii ; Missouriensis. Texana ; pusilla. 
papyracantha ; Echinocactus papyra- Texensis ; Hey deri. 
cantha. tuberculosa ; strobiliformis. 
OPUNTIA acanthocarpa. Engelm. & Bigel. Pac. R. Rep. 4. 51, t. 18, f. 1-3, & 
t. 24, f.11 (seeds). Engelm. Syn. Cact. 808 (52); King’s Rep. 5. 120. Walp. 
Ann. 5. 56. 
@ O. Californica. Engelm. in Emory’s Rep. 157, f. 11. 
O. angustata. Engelm. & Bigel. 1. c. 39, t. 7, f. 3,4, & t. 22,f.11 (seed). En- 
gelm. Syn. Cact. 292 (86); Fl. Calif. 248. Walp. Ann. 5. 50. 
O. arborescens., Engelm. in Wisliz. Rep. 6; Emory’s Rep. 157, f.10; Gray, PI. 
Fendl. 52, & Pl. Lindh. 208; Syn. Cact. 307 (51) ; Cact. Mex. Bound. 58 & 77, t. 75, 
f. 16,17 (seeds); Ives’ Rep. 14; King’s Rep. 120. Salm, Cact. Hort.’ Dyck. 250. 
Lab. Monogr. Cact. 492. Walp. Ann. 3. 896 & 5. 56. Thurber in Gray, Pl. Thurb. 
300. Engelm. & Bigel. Pac. R. Rep. 4. 51, t. 17, f. 5, 6, t. 18, f. 4, & t. 24, f. 12 
(seeds). Porter, Fl. Col. 49. Watson, Pl. Wheeler, 9. 
Cactus cylindricus. James, Cat. 182; Long’s Exp. 2. 208. Eat. & Wr. 164. 
Cactus Bleo. Torrey, Ann. Lyc. N. Y. 2. 202. 
O. exuviata, var. stellata. Lemaire, Man. Cact. 1846. 
O. exuviata. Scheele, Roem. Texas, 434. 
O. arbuscula. Engelm. Syn. Cact. 3809 (53); Cact. Mex. Bound. 60. Walp. 
Ann. 5. 57. 
O. arenaria. Engelm. Syn. Cact. 301 (45); Cact. Mex. Bound. 52 & 57, t. 75, 
f.15 (seed). Walp. Ann. 5. 53. 
O. basilaris. Engelm. & Bigel. Pac. R. Rep. 4. 43, t. 13, f 1-5, & t. 23, f. 14 
(seed). Engelm. Syn. Cact. 298 (42); Cact. Mex. Bound. 52; Ives’ Rep. 14; King’s 
Rep. 5. 118; Bot. Calif. 249. Walp. Ann. 5. 52. Watson, Pl. Wheeler, 9. 
O. Bigelovii. Engelm. in Pac. R. Rep. 4. 50, t. 19, f 1-7; Syn. Cact. 307 (51) ; 
Bot. Calif. 1. 250. Walp. Ann. 5. 56. Watson, Pl. Wheeler, 9. 
0. tn. sp. Bigelow, Pac. R. Rep. 4. 18. 
O. Camanchica. Engelm. & Bigel. Pac. R. Rep. 4. 40, t. 9, f. 1-5, & t. 22, 
f. 12-15 (seed). Engelm. Syn. Cact. 291 (35). Walp. Ann. 5. 50. Porter, FI. 
Col. 49. 
O. chlorotica. Engelm. & Bigel. Pac. R. Rep. 4. 38, t. 6, f.1-3. Engelm. Syn. 
Cact. 291 (35); Bot. Calif. 1.248. Walp. Ann. 5. 49. 
O. Tidballii. Bigelow, Pac. R. Rep. 4. 11. 
O. clavata. Engelm. in Wisliz. Rep. 11; Gray, Pl. Fendl. 52; Syn. Cact. 502 
(46). Salm, Cact. Hort. Dyck. 244. Lab. Monogr. Cact. 482. Walp. Ann. 3. 896. 
Engelm. & Bigel. Pac. R. Rep. 4. 48, t. 22, f. 1-3, & t. 24, f. 6 (seed). 
O. Davisii. Engelm. & Bigel. Pac. R. Rep. 4. 49,t.16. Engelm. Syn. Cact. 
305 (49). Walp. Ann. 5. 55. 
