408 CACTACER, [Optntia. 
Q. Mohavensis. Engelm. & Bigel. Pac. R. Rep. 4. 40, t. 9, f. 6-8; Syn. Cact- 
293 (37); Bot. Calif. 1.248. Walp. Ann. 5. 50. 
Q. Parryi. Engelm. in Am. Journ. Sci. 2. 14. 339; Syn. Cact. 303 (47); Cact. 
Mex. Bound. 53; Bot. Calif. 1. 249. Engelm. & Bigel. 1. c. 48, t. 22, f£. 4-7, & t. 24, 
f. 7 (seed). Walp. Ann. 6. 54. 
O. Pes-Corvi. LeConte; Chapman, 145. Engelm. in Proc. Am. Acad. 3. 346; 
Trans. Acad. St. Louis, 2. 204; Simpson’s Rep. 442. Wood, Bot. & Fl. 132. 
O. phzacantha. Engelm. in Gray, Pl. Fendl. 51; Syn. Cact. 292 (36) ; Cact. Mex. 
Bound. 49, t. 75, f. 9-13 (seed). Walp. Ann. 2. 686 & 5. 50. 
Var. major. Engelm. & Bigel. Pac. R. Rep. 4. 40. Engelm. Syn. Cact. 275 (37). 
O. polyantha. Haworth, Syn. Pl. Suce. 190. DC. Prodr. 3. 472. Pfeiff. Enum. 
163. Walp. Rep. 2. 351. Chapman, 145. Wood, Bot. & Fl. 182. 
Cactus polyanthus. Sims, Bot. Mag. t.2691. DC. PI. Grass. t. 138. 
O. procumbens. Engelm. & Bigel. Pac. R. Rep. 4. 39, t. 6, f.4,5. Engelm. 
Syn. Cact. 292 (36). Walp. Ann. 5. 49. 
O. prolifera. Engelm. in Am. Journ. Sci. 2. 14. 338; Syn. Cact. 806 (50); Cact. 
Mex. Bound. 56; Bot. Calif. 250. Walp. Ann. 5. 56. 
O. pulchella. Engelm. in Trans. Acad. St. Louis, 2. 201; King’s Rep. 5. 119; Bot. 
Calif. 1. 249; Simpson’s Rep. 443, t. 3. 
O. Rafinesquii. Engelm. Pac. R. Rep. 4. 41, t. 10, f. 3-5, & t. 22, f. 7, 8 (seeds) ; 
Syn. Cact. 295 (39); Torrey Bot. Bull. 2.34. Walp. Ann. 5.51. Lemaire, Ill. 
Hort. 15, Mise. 49, fig. Haage & Schmidt, Rev. Hort. 1868, 90, f. 10,11. Gray, 
Manual, 185. Porter, Fl. Col. 49. Peck, Torrey Bot. Bull. 2. 37. Helmsley, Gar- 
den, 11. 274. 
Cactus Opuntia. Torrey, Fl. U. S. 466, in part. Audubon, Birds, t. 69. Bigel. 
FI. Bost. 3 ed. 205. 
O. mesacantha & cespitosa. Raf. in Seringe, Bull. Bot. Gen. 1830, 216 (Litt.- 
Ber. zu Linnea, 1833, 81); Fl. Med. 2. 247. Pfeiffer, Enum. Cact. 146. Walp. 
Rep. 2. 346. 
O. vulgaris. Beck, Bot. 135, in part. Torr. & Gray, Fl. 1. 555, in part. Torrey, 
Fl. N. Y. 1. 245. Emerson, Trees of Mass. 424. Parry, Pl. Minn. 612. 
O. vulgaris, var. (?) Rafinesquii. Gray, Manual, 2 ed. 136. 
Var. microsperma. Engelm. in Pac. R. Rep. 4. 41; Syn. Cact. 295 (39). 
Var. minor. Engelm. in Pac. R. Rep. 4. 41, t. 11, f. 1. 
Var. (?) grandiflora. Engelm. 1. c. t. 11, f. 2,3; Syn. Cact. 1. ¢. 
O. sp. Engelm. Pl. Lindh. 246 (38). 
O. intermedia. Engelm. in Gray, Pl. Lindh. 206. 
Var. (?) cymochila. Engelm. & Bigel. 1. c. 42, t. 12, f. 1-3, & t. 23, f. 10-12 
(seed). Engelm. Syn. Cact. 1. ¢. 
Var. (7) stenochila. Engelm. & Bigel. 1. c. 43, t. 12, f. 4-6, & t. 23, f. 9 (seed). 
Engelm. Syn. Cact. 296 (40). 
Var. (?) macrorhiza. Engelm. Syn. Cact. 296 (40). 
O. macrorhiza. Engelm. in Gray, Pl. Lindh. 206; Cact. Mex. Bound. 51, t. 69. 
Salm, Cact. Hort. Dyck. 245. Lab. Monogr. Cact. 477. Young, Fl. Texas, 278. 
Var. (7) fusiformis. Engelm. & Bigel. Pac. R. Rep. 4. 45, t. 12, f. 7, 8, & t. 23, 
f.6 (seed). Engelm. Pl. Upp. Miss. 192; Syn. Cact. 397 (41). 
O. rufida. Engelm. Syn. Cact. 298 (42); Cact. Mex. Bound. 51. Walp. Ann. 
5. 52. 
