406 CACTACEZ. [Opuntia. 
O. echinocarpa. Engelm. & Bigel. 1. c. t. 18, f. 5-10, & t. 24, f. 8 (seeds). En- 
gelm. Syn. Cact. 305 (49); Ives’ Rep. 14; Bot. Calif. 1.250. Walp. Ann. 5. 55. 
Parry, Am. Naturalist, 9. 20. 
Var. major. Engelm. Syn. Cact. l. c.; Cact. Mex. Bound. 56. 
O. Emoryi. Engelm. Syn. Cact. 303 (47); Cact. Mex. Bound. 53, t. 70, 71; 
Bot. Calif. 1.249. Walp. Ann. 5. 54. 
O. Engelmanni. Salm, Cact. Hort. Dyck. 235. Engelm. in Gray, Pl. Lindh. 
207; Am. Journ. Sci. 2. 14. 338; Syn. Cact. 290 (34); Cact. Mex. Bound. 47, t. 75, 
f. 1-4 (seeds) ; Bot. Calif. 1.248. Scheer, Seem. Bot. Herald, 293. Walp. Ann. 
2. 686 & 5.49. Lab. Monogr. Cact. 460. Young, Fl. Texas, 278. 
UO. Lindheimeri. Engelm. in Gray, Pl. Lindh. 207. Walp. Ann. 2. 686. 
? O. dulcis. Engelm. Cact. Mex. Bound. 48, t. 75, f. 5-7 (seeds). 
Var. cyclodes. Engelm. & Bigel. Pac. R. Rep. 4. 37, t. 8, f.1, & t. 22, f.8,9 
(seed). Engelm. Syn. Cact. 291 (35). 
Var. occidentalis. Engelm. in Pac. R. Rep. 4, errata iii.; Syn. Cact. 290 (34) ; 
Bot. Calif. 1. 248. 
O. occidentalis. Engelm. & Bigel. L c. 4. 38, t. 7, f. 1, 2, & t. 22, f. 10 (seed). 
’ Var. (?) littoralis. Engelm. in Bot. Calif. 1. 248. 
O. Ficus-Inpica, Mill. Torr. & Gray, Fl. 1. 555. Engelm. Syn. Cact. 290 (54) ; 
Bot. Calif. ]. 248. Chapman, 144. Wood, Bot. & FI. 152. 
O. filipendula. Engelm. Syn. Cact. 294 (38); Cact. Mex. Bound. 51, t. 68. 
Walp. Ann. 5. 41. 
O. fragilis. Haworth, Syn. Pl. Suce. Suppl. 82. DC. Prodr. 5.472. Don, Mill. 
3. 172. Pfeiffer, Allg. Gart. Zeit. 6.276; Enum. Cact. 147. Torr. & Gray, Fl. 1. 555. 
Dietr. 3.112. Spach, Hist. Veg. 15.598. Walp. Rep. 2. 354. Salm, Cact. Hort. 
Dyck. 243. Lab. Monogr. Cact. 481. Trecul, Bull. Bot. Soc. France, 1. 306. En- 
gelm. Pl. Upp. Miss. 192; Syn. Cact. 301 (45); Trans. Acad. St. Louis, 2. 200; 
King’s Rep. 5. 119; Simpson’s Rep. 442. Engelm. & Bigel. Pac. R. Rep. 4. 48, 
t. 24, f. 5 (seed). Walp. Ann. 5. 54. ~ 
Cactus fragilis. Nutt. Genera, 1. 296. James, Long’s Exped. 2. 138. Spreng. 
Syst. 2.497. Torrey, Ann. Lyc. N. Y. 2. 202. Eat. & Wr. 163. 
? O. brachyarthra. Engelm. & Bigel. Pac. R. Rep. 4. 47, t.12, £9. Engelm. 
Syn. Cact. 302 (46). Walp. Ann. 5. 54. 
O. fulgida. Engelm. Syn. Cact. 306 (50); Cact. Mex. Bound. 57, t. 75, f. 18 
(seed); Bot. Calif. 1. 250 (as O. fidgens). Walp. Ann. 5. 56. 
O. fusco-atra. Engelm. Pac. R. Rep. 4, t. 11, f.4; Syn. Cact. 297 (41). Walp. 
Ann. 5. 52. 
O. Grahami. Engelm. Syn. Cact. 304 (48); Cact. Mex. Bound. 55, t. 72. Walp. 
Ann. 5. 55. 
O. hystricina. Engelm. & Bigel. Pac. R. Rep. 4. 44, t. 15, f. 5-7, & t. 23, f. 15 
(seed); Syn. Cact. 299 (43); Ives’ Rep. 14; Trans. Acad. St. Louis, 2. 200; King’s 
Rep. 5. 119; Simpson’s Rep. 441. Walp. Ann. 5. 53. 
O. Kleinie. DC. Rev. Cact.118. Pfeiff. Enum. Cact. 171. Salm. Cact. Hort. 
Dyck. 250. Walp. Rep. 2. 353. Engelm. Cact. Mex. Bound. 77. 
O. Wrightii. Engelm. Syn. Cact. 308 (52); Cact. Mex. Bound. 59 & 77. Walp. 
Ann. 5. 57. 
O. leptocaulis. DC. Rey. Cact.118. Pfeiffer, Enum. Cact. 175. Walp. Rep. 
2.353. Salm, Cact. Hort. Dyck. 250. Lab. Monogr. Cact. 493. Scheer, Seem. 
Bot. Herald, 293. Engelm. in Bot. Calif. 1. 250. 
