OPUNTIA. 



147 



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Engelmann herbarium are the two original sheets. One of these comes from the ''Moun- 

 tain Valleys of San Pasquel and Santa Isabel," northeast of San Diego. This consists of 



small 



comes 



this can be identified. The other 

 and fruit with seeds. The spines are dark 

 brown or nearly black. This specimen ap- 

 pears to be the one figured in the Pacific 

 Railroad Report and may very properly be 

 taken as the type of the species. 



much 



some 



to the interior valleys of California. An ex- 

 amination, however, of the type material, 

 and a study of the living plants in southern 

 California by Dr. Rose, convince us that 

 the coastal opuntias can not all be referred 



sometimes 



limits 



part belongs to 0. occidentalis. The 



of the latter species, and its distribution, 



r 



are not well defined. 



Of this relationship is to be consid- 

 ered Opuntia semispinosa Griffiths (Bull. 

 Torr. Club 43: 89. 1916), which the author 



conspicuous spe- 



common 



cies in the coastal region of California. 



Illustrations: N. Mex. Agr. Exp. Sta. 

 Bull. 6o:pl.3,f. 2;Pac. R. Rep.4:pl. 7, f.1,2; 

 pi. 22, f. 10; Rep. Mo. Bot. Gard. 22: pi. 8, 

 this last as Opuntia demissa. 



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Figure 186 is from a plant collected 

 on Santa Catalina Island, California, by 



Mr 



B, Parish in 1916. 



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— Opuni 



150. 



ngelmannii Salm-Dyck in Engelmann, Best. J 



207 



1850 



1856. 

 1896. 



Opuntia engelmannii cyclodes Engelmann, Proc. Amer. Acad. 3: 291. 

 Opuntia lindheimeri cyclodes Coulter, Contr. U. S. Nat. Herb. 3: 422. 

 Opuntia dillei Griffiths, Rep. Mo. Bot. Gard. 20: 82. 1909. 

 Opuntia arizonica Griffiths, Rep. Mo. Bot. Gard. 20: 93. iQOQ- 

 Opuntia wootonii Griffiths, Rep. Mo. Bot. Gard. 21: 171. i9io. 

 Opuntia cyclodes Rose, Contr. U. S. Nat. Herb. 13: 309. 191 1- 

 Opuntia gregoriana Griffiths, Rep. Mo. Bot. Gard. 22: 26. 1912. 

 Opuntia valida Griffiths, Proc. Biol. Soc. Washington 27: 24. 1914. 

 Opuntia confusa Griffiths, Proc. Biol. Soc. Washington 27: 28. 1914- 

 Opuntia magnarenensis Griffiths, Proc. Biol. Soc. Washington 29: 9- iQio. 

 Ohunfia PThansa Griffiths. Proc. Biol. Soc. Washington 29: 14. 1910- 



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Originally described as erect and up to 2 meters high, but more properly a widely spreaduig 

 bush, usually without a definite trunk; joints oblong to orbicular, 2 to 3 dm. long, thick, pale green 

 areoles distant, becoming large and bulging; spines usually more or less white, with dark red or 

 brownish bases and sometimes with black tips, usually 3 or 4, sometimes only i , or ^"^uely j an ing 

 from the lower areoles, but on old joints 10 or more, usually somewhat porrect or » little spreading, 

 but never reflexed, the larger ones much flattened, the longest one 5 cm. ^«"g; J^^\l^,,^"^"^^': 

 about 15 mm. long; glochids numerous, brown with yellowish tips; flowers large, yellou , fruit 



3-5 to 4 cm. long, red; seeds small, 3 to 4 mm. broad. 



Typ 



From El 



Mexico 



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