THE CACTACEAE. 



1'iii. 25. Pereskiopsis, apparently P. rotimdifolia, with other cacti in the background. 



6. Pereskiopsis porteri (Brandegce) Britton and Rose, Smiths. Misc. Coll. 50:332. 1907. 



Opuntia porteri Brandegee in Weber, Diet. Hort. Bois 899. 1898. 

 Opuutia hriiiidi'Ki'i'i Schtiinaiiii, Gcsamtb. Kakteen 653. 1898. 

 Pereskiopsis liniinlc^cci Britton and Rose, Smiths. Misc. Coll. 50: 331. 



1907. 



Stems stout, woody, branching, 6 to 12 dm. high, 3 cm. in diameter, the old areoles bearing 3 

 to 8 stout spines 3 to 5 cm. long, but on the trunk often 15 to 20 spines from an areole; first and sec- 

 ond year branches usually short, spineless, or with i or 2 brown spines, those of the first year green, 

 the second-year brownish ; areoles bearing numerous small, brown glochids ; 

 leaves sessile, 2 to 3 cm. long, obovate, acute, fleshy, in greenhouse speci- 

 mens sometimes much narrower ; flowers about 4 cm. in diameter ; sepals 

 few, spatulate, short; petals few, yellow, broad, entire; fruit joint-like, 

 oblong, 4 to 5 cm. long, orange-colored, with large areoles bearing brown 

 glochids; seeds i or few, covered with white deciduous hairs. 



Type locality: In Sinaloa, Mexico. 



Distribution: Common in the Cape region of Lower Cali- 

 fornia and in the State of Sinaloa, Mexico. 



Figure 26 shows a leafy twig of a plant sent in 1904 from 

 the Missouri Botanical Garden to the New York Botanical Garden 

 as Opnulia branJcgeci, which had been received by the Missouri Bo- 

 tanical Garden from Mrs. Katharine Brandegee in 1901. 



7. Pereskiopsis spathulata ditto) Britton and Rose, Smiths. Misc. Coll. 

 5o:333- 1907- 



Pereskia sf>nthulnln Otto in Pfeiffer, Enum. Cact. 176. 1837. 

 Opuntia spathuliita \Vcber, Bull. Mus. Hist. Nat. Paris 4: 165, 



1898. 



FIG. 26. Pereskiopsis 

 porteri. Xo.66 



Branching shrub, i to 2 meters high; branches few, glaucescent, deflexed; leaves spatulate, 

 thick, green, 2.5 to 5 cm. long; areoles distant, woolly, hairy when young; spines i or 2, rigid, white 

 below, 2.5 cm. long; glochids brown, borne in the upper part of the areoles; flowers red; seeds white. 



