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. x: 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, as E. 
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, FI. 
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 i, 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 1915, 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. 111; Chodat, Veg. Paraguay 1: f. 87, 88, 89, as Echino¬ 
cactus schumannianus. 
Figure 199 is copied from the first illustration cited above. 
