^ 



fi 



1 



PCRESKIOPSIS. 



27 



as 



I 



Cactus opuniiaeflorus Mocino an 

 synonym of Pereskia opuntiacfl 

 Illustrations: Forster, Handb. 

 9, both as Pereskia opuntiaeflor 

 Fisfure 2.^ is copied from the se 



Sesse (Pfeiffer, Eniim. Cact. 178. 1837) was published 



ed. 2. f. 



Mem. Mus. Hist 



illustration above cited. 



iopsis rotundifolia (De Candolle) Britton and Rose, Smiths. Misc 



Pereskia rotundifolia De Candolle, Prodr. 3: 475. 1828. 

 Opuntia rotundifolia Schumann, Gesamtb. Kakteen 652. 1898. 



1907 



4 



Stem thick, more or less woody; branches slender, glabrous; leaves nearly orbicular, nuicronatc; 

 spines elongated, solitary; flowers 3 cm. broad, borne on the second-year branches; petals reddish 

 yellow, broad, with mucronate tips; ovary leafy; fruit obovoid, red, leafy. 



Fig. 22. — Pereskiopsis 

 diguetii. X0.5. 



Fig. 23. — Pereskiopsis opuntiae 



flora. X0.5. 



Fig. 24. — Pereskiopsis 

 rotundifolia. X0.5. 



Mexico 



Type locality: In 



Distribution: Known only from the original description and, apparently, from Oaxaca. 



Cactus frutescens Mocifio and Sesse (Pfeiflfer, Enum. Cact. 178. 1837) and Cactus 



rotundifolia Mocino and Sesse (De Candolle, Prodr. 3: 475. 1828) were given as 

 of Pereskia rotundifolia, but were never published. 



Illustrations: Mem. Mus. Hist. Nat. Paris 17: pi. 20, as Pereskia rotundifolia 

 mann, Gesamtb. Kakteen f. 99, as Opuntia rotundifolia. 



Figure 24 is copied from the first illustration above cited; figure 25 is from 

 tograph taken by Dr. MacDougal at Oaxaca, Mexico, in 1906. 



synonyms 



Pereskiopsis chapistle (Weber) Britton and Rose, Smiths. Misc. Coll. 50: 3, 



Opuntia chapistle Weber in Gosselin, Bull. Mus. Hist. Nat. Paris lo: 388. 1904. 



1907 



A large, branching shrub, sometimes 3 to 4 meters high, the branches widely spreading, glab- 

 rous; spines single, white, long (6 cm. long), very stout; leaves fleshy, somewhat persistent, obovate 

 •to elliptic, sometimes nearly orbicular, 3 to 4 cm. long, glabrous; flowers yellow; fruit red. 



Type localit_ 

 Distribution 

 Illustration: 



In Oaxaca. 



Morelos, Mexico 



Nat. Acclim. France 52 : f. 10, as Opuntia chapistle 



Plate III, figure 2, represents a leafy branch of a plant collected by Dr. Rose at 



Mexico 



