OPUNTIA. 



59 



Type locality: Bill Williams River, Arizona. 



Distribution: Southern Nevada, Arizona, California, northern Sonora, and northern 

 Lower California. 



Illustrations: Ann. Rep. Bur. Amer. Ethn. 26: pi 12; Contr. U. S. Nat. Herb. 16: pi. 

 128, b; Hornaday, Camp-fires on Desert and Lava, facing p. 154; Journ. N. Y. Bot. Gard. 

 5: f. i6;Pac. R. Rep. 4: pi. 19; Plant World 11^° -A. 10. 



Figure 69 is from a photograph by Dr. MacDougal of a plant in Pima Canyon, Santa 

 Catalina Mountains, Arizona; figure 70 is copied from the Pacific Railroad Report above 

 cited. 



21. Opuntia ciribe Engelmann in Coulter, Contr. U. S. Nat. Herb. 3: 445. 1896. 



One meter high or less, with numerous stout branches densely armed; ultimate joints 4 to 5 cm. 

 in diameter, strongly and regularly tuberculate, 3 cm. in diameter ; tubercles about as long as broad 



Fig. 69. — Opuntia bigelovii. 



Fig. 70. — Opuntia bigelovii. Xo.66. 



(5 to 7 cm. broad) ; larger spines 4 to 6, stout, 2 to 3 cm. long, covered with loose yellow sheaths, 

 accompanied by several bristle-like spines or hairs; glochids numerous; flowers yellow; ovary some- 

 what bristly; fruit strongly tuberculate, 3 to 4 cm. long, spineless. 



Type locality: Comondu and Loreto northward to beyond Rosario, Lower California. 



Distribution: Central Lower California. 



Opuntia ciribe is near 0. bigelovii, but differs from it in having less spiny stems and 

 globular, slightly different fruits. 



Figure 71 is from a photograph of a plant collected by Dr. Rose at the head of Con- 

 cepcion Bay, Lower California; figure 72 is from a drawing of a joint from the same plant. 



