THE CACTACEAE. 



Collected in thickets on dr^^ hiUs near Sibambe, Province of Chimborazo, Ecuador, 

 bv J. X. Rose and George Rose, August 29, 1918 (No. 22432). 



The locahty at which this species is 

 found is semiarid and a number of other 

 cacti are associated with it, among which 

 is the little 0. pestifer, described on a 

 preceding page. 0. aequatorialis was not 

 so common as some of the other species 

 and was usually found growing up through 

 open-branched bushes and was in this 

 wav more or less protected. 



Figure 2 88 is from a photograph of 

 the tvpe plant taken by George Rose; 

 figure 289 shows one of its joints. 



116 a. Opuntia lata Small, Joum. N. Y. Bot. 

 Gard. 20:26. 1919. (See page 

 126, ante.) 



Plant prostrate, often radially branched, 

 sometimes forming mats nearly a meter in 

 width, the tip of the branches sometimes 

 assurgent, with elongate cord-like roots; 

 joints elliptic to narrowly obovate, often 

 narrowly so, thick, 4 to 15 cm. long, deep 

 green, sometimes glaucous, especial] j^ when 

 young; leaves subulate, 6 to 11 mm. long, 

 green or purple-tinged; areoles scattered, 

 often conspicuous, sometimes ven,' promi- 

 nent and densely bristly, the marginal ones, 

 at least, armed; spines slender, solitary' or 2 

 together, pink, turning red or red-banded, 

 at maturitv grav or nearlv white, nearly 



Fig. 2S9. — O. aequatorialis. X0.4. 



Figs. 290 and 291. — O. lata. X0.4. 



Figs. 292 and 293, — 

 Opuntia macateei. 

 X0.4. 



