98 



TH^ CACTACEAE. 



verv variable in color and size, lemon-yellow to deep red, 2 to 3 cm. long, sometimes 5 cm. broad when 



ovary 



ovary 



mm 



Type locality: In Bolivia. 



Distribution: Very common on the high pampas 



Peru and Bolivia, and adjacent Argentina. 



Cactus pentlandii Lemaire (Cact. 88. 

 posed to apply to this species. 



name 



most characteristic plants of the high pampas 

 ndean region, mostly growing at elevations of 12,000 feet or 

 forming low, broad, compact clumps, sometimes made up 



more 



Illustrations: 



Cact. ed. 2. f. 124; ?W. Watson, Cact. Cult. f. 77, 



?F6rster, Handb. 

 all as Opuntia 



Monatsschr. Kakteenk. 24: 



Opuntia dactylifi 



Figure 116 represents a joint of the plant collected in 



Fig. 117. — Opuntia pent- 

 landii. X0.4. 



Dr. Rose at Comanche 



Tuliac 



ignescens Vaupel, Bot. Jahrb 



1913 



Plants forming clumps 2 dm. high or less, with hundreds of 

 erector spreading joints; joints bluish green, 8 to 10 cm. long, very 

 fleshy, naked below; upper areoles very spiny; spines 6 to 15 from 

 each areole, nearly equal, 4 to 5 cm. long, erect, acicular, yellow; 

 flowers very showy, deep red; ovary oblong, 3 to 4 cm. long, naked 

 below, but the upper areoles producing numerous spines 4 to 7 cm. 

 long; fruit red, 7 cm. long, spiny and tuberculate above, terete 

 below, with a deep umbilicus; seeds nearly globular, about 5 mm. 

 in diameter. 



Type locality: Near Sumbay, southern Peru. 

 Distribution: On the pampas of southern Peru and 

 northern Chile, at altitude of 3,ocm3 to 3,600 meters. 



->. 



^C 



1 J - 



r b 



Fig. h8. — Opuntia ignescens. X0.5 



i\ 





_■_.=■ 



r-" _r 



Fig. 119, — Opuntia ignescens forming large mounds. 



■rv-' 



^ r 





