PI^RESKIA. 



15 



7. Pereskia moorei sp. nov. 



A much branched shrub about i meter high, covered with brown bark; branches stout; leaves 

 orbicular or obovate-oblong, rounded or apiculate at the apex, somewhat cuneately narrowed at the 

 base, thick and fleshy, 4 to 8 cm. long, 3.5 to 6 cm. wide; areoles suborbicular, 4.5 mm. in diameter, 

 the wool gray; spines at each areole mostly 2 to 4, very unequal, the longest 7.5 cm. long or less, ashy 

 gray, blackish toward the apex; flowers purplish red, about 4.5 cm. long; ovary few-leafed, its leaves 

 obovate-oblong, 2.5 to 3 cm. long, bearing i to 3 black spines about 5 mm. long in the axils; sepals 

 narrowly oblong-obovate, bluntly acute, 2.5 cm. long, bearing long bristles in their axils; petals 

 obovate, obtuse, 3.5 cm. long, rose-colored; stamens about 2 cm. long; areoles on the ovary large, 

 filled with a mass of short, white wool and bearing an occasional short spine; fruit not known. 



Fig. 8. — Pereskia moorei. X0.66. 



Fig. 9. — Pereskia guamacho. 



Described from the specimen preserved in the herbarium of the British Museum of 

 Natural History collected at Corumba, Brazil, by Spencer Moore, No. 955, who has kindly, 

 furnished us with data for this description, together with a sketch of the type specimen. 

 Specimens were also collected at Corumba by F. C. Hoehne in 1908, No. 4863, who sup- 

 posed it to be P. sacharosa. 



Figure 8 is from a photograph of an herbarium specimen from Matto Grosso, Brazil, 

 received from F. C. Hoehne in 19 15. 



8. Pereskia weberiana Schumann, Gesamtb. Kakteen 762. 1898. 



Shrubby, much branched, glabrous, 2 to 3 meters high, the slender round branches about 3 mm. 

 thick; leaves ovate to elliptic, about 3 cm. long and 2 cm. wide, sessile, acute at the apex, obtuse at 

 the base ; areoles circular, slightly elevated, the wool short, whitish, fading brown ; spines 3 to 6 at the 

 lower areoles, solitary at the upper, 2 cm. long or less, terete, acicular, yellow or horn-colored; flowers 

 clustered, white, about i cm. long or less; ovary about 2 mm. long, bearing a few white, woolly areoles; 

 outer segments of the perianth triangular, acute, woolly at the axils, the inner spatulate to obovate; 

 stamens a little longer than the petals; stigma-lobes 3 or 4, erect. 



