CATALOGUE. 129 



a little stouter; deep red flowers, l£-2i' long, half as wide, open equally 

 day and night, spatulate, rather stiff petals, rounded at tip. — From West 

 Texas to Southern Colorado and Arizona, as far west as the San Francisco 

 Mountains, Bigelow, and from Fort Whipple, Palmer. 



Ceeeus (Echinocereus) teiglochidiatus, Engelm. — Few (2-5) 

 globose or oval heads, 2-4' high, 2-2 £ thick, 6-7-ribbed; areolae more 

 distant than in the last; spines fewer, only 3-6, flattened or angular, 

 usually curved, about 1' long; flowers same as in last. — New Mexico, Santa 

 F4, 1874, Rothrock (39). C. gonacanthus, Engel. & Bigel., which extends 

 from New Mexico to the Arkansas River and westward to Zufii, and is 

 characterized by its stoutei", longer, and more numerous spines, may 

 belong to this species; and perhaps both, with numerous other so-called 

 species, which vary only in the number of the ribs, the number or form of 

 the spines, and the closeness of the spine-bunches, but have all similar 

 flowers, may have to be considered as forms of one polymorphous type 

 (C. plicenicens). 



Opuntia (Platopuntia) basilaris, Engelm. & Bigel. — A low plant, 

 with broadly obovate, often retuse or fan-shaped joints, branching mostly 

 from the base, pubescent, as well as the fruit; areolae very close, without 

 spines, but densely covered with short, yellowish-brown bristles; flowers 

 large, rose-purple; fruit dry, subglobose, with rather few, large and thick 

 seeds. — Southeastern' California to Arizona. Distinct from all other species 

 of this region by its mode of growth, its pubescence, the absence of spines 

 proper, and the very large (3J-5" wide) seeds. The large purple flowers, 

 which in the season completely cover the plant, make a beautiful show. 



Opuntia (Platopuntia) Missoueiensis, DC. — Santa Fc, N. Mex., 

 1874, Rothrock (6). Common from the plains of the Missouri into the 

 mountains. A low, very spiny (whence Nuttall's name, 0. ferox) species, 

 with yellow or sometimes (on the Upper Arkansas plains) purple flowers, 

 and dry spiny pods, which contain large, much compressed, and broadly 

 margined seeds. — Several more, probably half a dozen, flat-jointed Opuntice 

 have been noticed in Arizona, some prostrate and with smaller joints ; 

 others tall, erect, with large joints (to a foot or more in length), many 

 of them very spiny; of them not much is known, as the plants are difficult 

 9 BOT 



