OPUNTIA. 



one and more slender than the other. It resembles very closely specimens collected by 

 Dr. Rose at Ixmiquilpan, Mexico, in 1905, which we have referred to 0. kleiiiiac. 



Opuntia galcotiii de Smet (Miquel, Nederl. Kruidk. Arch. 4: 337. 1858) and 0. 

 costigera Miquel (Nederl. Kruidk. Arch. 4 : 338. 1858), if really from Mexico, may belong 

 here, but the descriptions are indefinite. Dr. Schumann did not know them. 



Opuntia mendocienses (Cat. Darrah Succ. Manchester 56. 1908) is said to be "prob- 

 ably only a form of 0. imbricata." 



Opuntia nnditlata Link and Otto (Verh. Ver. Beford. Gartenb. 6: 434. 1830) was not 

 published. According to Pfeiffer, it is the same as 0. exuviata, which we refer here. 



Opuntia decipiens minor (Pfeiffer, Enum. Cact. 172. 1837) is unpublished. 



Cactus subquadrifolius Mocino and Sesse (De Candolle, Prodr. 3: 471. 1828) was given 

 as a synonym of Opuntia rosca and therefore belongs here. 





-, 



FIG. 80. Opuntia tunicata. 



FIG. 81. Opuntia pallida. 



Illustrations: Agr. Gaz. N. S. W. 22 : pi. opp. p. 696; Bull. U. S. Dept. Agr. 31 : pi. 

 5 ; pi. 6, f. i ; Cact. Mex. Bound, pi. 73, f. 7, 8 ; Curtis's Bot. Mag. 135 : pi. 8290; N. Mex. 

 Agr. Exp. Sta. Bull. 60: pi. 7, f. 2; Forster, Handb. Cact. ed. 2. f. 134; Mem. Mus. Hist. 

 Nat. Paris 17: pi. 15; W. Watson, Cact. Cult. f. 85, the last three as Opuntia rosea. W. 

 Watson, Cact. Cult. f. 8, in part, this as Opuntia decipiens. Ann. Rep. Bur. Amer. Ethn. 

 26: pi. 8, f. a; Cact. Mex. Bound, pi. 75, f. 16, 17; Gard. Chron. III. 34: f. 36; Gard. 

 and For. 9 : f . i ; Illustr. Fl. 2 : f. 2533; ed. 2. 2 : f . 2992; N. Mex. Agr. Exp. Sta. Bull. 78 : 

 pi. [10]; Pac. R. Rep. 4: pi. 17, f. 5, 6; pi. 18, f. 4; pi. 24, f. 12; Rep. Mo. Bot. Gard. 22: 

 pi. 7, in part; all as Opuntia arborescens. Rep. Mo. Bot. Gard. 22 : pi. 6, 7, in part, these 

 two as Opuntia vcxans. 



Plate xi, figure i, represents a joint of a plant collected by W. L. Bray in western 

 Texas. Figure 79 is from a photograph taken by Professor F. E. Lloyd in Zacatecas, 

 Mexico, in 1908. 



27. Opuntia tunicata (Lehmann) Link and Otto in Pfeiffer, Enum. Cact. 170. 1837. 



Cactus tiniicatits Lehmann, Ind. Sem. Hort. Hamb. 6. 1827. 



Opuntia stapeliae De Candolle, Mem. Mus. Hist. Nat. Paris 17: 117. 1828. 



Opuntia hystrix Grisebach, Cat. PI. Cub. 117. 1866. 



Opuntia perrita Griffiths, Rep. Mo. Bot. Gard. 22 : 33. 1912. 



