1 64 



THE CACTACEAE. 



Type locality: Argentina. 



Distribution : Argentina. 



This species has a wide range in southern Argentina and consists evidently of several 

 races differing in armament and relative length of the perianth-tube and limb. A plant 

 from the Berlin Botanical Garden sent as Echinocactus quchlianus produced flowers 

 identical with those of a plant of E. platensis brought by Dr. Rose from Cordoba. 



Illustrations: Bliihende Kakteen 2: pi. 105; Mollers Deutsche Gart. Zeit. 25: 474. 

 f. 6, No. 21; Monatsschr. Kakteenk. 10: 152; Schumann, Gesamtb. Kakteen Nachtr. f. 

 28, as Echinocactus quchlianus; Monatsschr. Kakteenk. 17: 9; 29: 141, as Echinocactus 

 platensis. 



Figs. 176 and 177. Gymnocalycium platense. 



Plate xviii, figure 2, shows a plant in flower, brought by Dr. Rose in 191 5 to the New 

 York Botanical Garden from near Cordoba, Argentina; plate xix, figure 1, shows the 

 flowering top of a plant received at the New York Botanical Garden from the Berlin 

 Botanical Garden as Echinocactus quchlianus. Figure 176 is from a photograph of a 

 plant from Argentina determined by Dr. Spegazzini as Echinocactus platensis leptanthus. 

 Figure 177 is from a photograph contributed by Dr. Spegazzini; figure 178 is from a 

 photograph also from Dr. Spegazzini, illustrating Echinocactus baldianus. 



21. Gymnocalycium schickendantzii (Weber). 



Echinocactus schickendantzii Weber, Diet. Hort. Bois 470. 1896. 

 Echinocactus delaetii Schumann, Monatsschr. Kakteenk. 11: 186. 



1 901. 



Usually simple, sometimes depressed, up to 10 cm. in diameter; ribs usually 7, broad, more or 

 less tuberculate ; spines 6 or 7, all radial, more or less spreading, the larger ones flattened; flowers 

 often from the side of the plant as well as central, white or pinkish in age, 5 cm. long; inner perianth- 

 segments oblong to spatulate, obtuse; scales on the ovary and flower-tube purplish, broad and 

 rounded. 



Type locality: Catamarca, Tucuman, Argentina. 

 Distribution: Northern Argentina. 



