MALACOCARPUS. 



189 



Schumann refers Echinocactus martinii Cels (Gesamtb. Kakteen 297. 1898) as a 

 synonym of E. sellowii, but we do not know that the binomial has been formally made. 



Illustrations: Anal. Mus. Nac. Montevideo 5: pi. 18; Pfeiffer and Otto, Abbild. Beschr. 

 Cact. 1 : pi. 1, as Echinocactus sellowii; Schelle, Handb. Kakteenk. 143. f. 68, as E. sellowii 

 martinii; Anal. Mus. Nac. Montevideo 5: pi. 21, as E. sellowii turbinatus; Anal. Mus. Nac. 

 Montevideo 5: pi. 19, as E. sellowii macrocanthus; Anal. Mus. Nac. Montevideo 5: pi. 20, asE. 

 sellowii macrogonus; Link and Otto, Verh. Ver. Beford. Gartenb. 3: pi. 16, f. 2, as Melocactus 

 tephracanthus; Pfeiffer, Abbild. Beschr. Cact. 2: pi. 6, as Echinocactus tetracanthus ; Curtis's 

 Bot. Mag. 64: pi. 3569, as E. sessiliflorus; Anal. Mus. Nac. Montevideo 5: pi. 25, as E. 

 fricii; Anal. Mus. Nac. Montevideo 5: pi. 26, as E. pauciareolatus ; Link and Otto, Verh. Ver. 

 Beford. Gartenb. 3: pi. 23, as Melocactus acuatus; Lemaire, Icon. Cact. pi. 12; Martius, Fl. 

 Bras. 4 2 : pi. 49; Monatsschr. Kakteenk. 4: 141, as Malacocarpus sellowii; Link and Otto, 

 Verh. Ver. Beford. Gartenb. 3: pi. 22, as Melocactus sellowii. 



Fig. 198. Malacocarpus tephracanthus. 



Fig. 199. Malacocarpus schumannianus. 



Plate xx, figure 1, shows the top of a plant collected by Dr. Shafer at Concordia, Argen- 

 tina, in 1917 (No. 119), which flowered in the New York Botanical Garden in 1918; plate 

 xxi, figure 2, shows a plant obtained by Dr. Rose from Dr. Spegazzini in 191 5, labeled 

 Echinocactus sellowianus, which flowered in the New York Botanical Garden in 1917. Fig- 

 ure 198 is copied from Pfeiffer and Otto's illustration of Echinocactus sellowii; figure 203 is 

 copied from the illustration given by Link and Otto of Melocactus acuatus. 



2. Malacocarpus schumannianus (Nicolai). 



Echinocactus schumannianus Nicolai, Monatsschr. Kakteenk. 3: 175. 1893. 



Echinocactus schumannianus longispinus Haage jr. in Quehl, Monatsschr. Kakteenk. 9: 43. 1899. 



Simple, globose or elongated, becoming bent or procumbent, sometimes over a meter long and 

 1 to 4 dm. in diameter; ribs about 30, low, acute, dull green; spines 4 to 7, setaceous, brownish to 

 yellow; flowers central, large, citron-yellow, 4.5 cm. long; perianth-segments oblong, obtuse, spread- 

 ing; scales on ovary with wool and bristles in their axils. 



Type locality: Said to be in the territory of Misiones, Paraguay. 



Distribution: Paraguay and northeastern Argentina. 



Illustrations: Schumann, Gesamtb. Kakteen f. 65; Monatsschr. Kakteenk. 7: 55; 

 Schelle, Handb. Kakteenk. 178. f. in; Chodat, Veg. Paraguay 1: f. 87, 88, 89, as Echino- 

 cactus schumannianus. 



Figure 199 is copied from the first illustration cited above. 



