MALACOCARPUS. 



197 



Plate xx, figure 2, shows the plant obtained by Dr. Rose from W. Mundt, in 191 2, 

 which has since flowered repeatedly in the New York Botanical Garden; plate xxiii, 

 figure 2, shows a plant obtained by Dr. Shafer at Concordia, Argentina, in 191 7 (No. 118) 

 which afterwards flowered in the New York Botanical Garden. Figure 209 is copied 

 from the illustration of Link and Otto, cited above as Cactus ottonis; figure 210 is from a 

 photograph furnished by Dr. Spegazzini of a plant cultivated by him as Echinocactus 

 arechavaletai ; figure 211 shows a plant collected by Dr. Shafer at Concordia, Argentina, 

 in 1917 (No. 118). 



15. Malacocarpus catamarcensis (Spegazzini). 



Echinocactus catamarcensis Spegazzini, Anal. Mus. Nac. Buenos Aires III. 4: 500. 1905. 

 Echinocactus catamarcensis pallidas Spegazzini, Anal. Mus. Nac. Buenos Aires III. 4: 500. 1905. 

 Echinocactus catamarcensis obscurus Spegazzini, Anal. Mus. Nac. Buenos Aires III. 4: 501. 1905. 



Simple, elliptic to short-cylindric, 10 to 50 cm. high, 8 to 12 cm. in diameter, grayish green; 



ribs 1 1 to 13, obtuse, tuberculate ; spines terete, more 

 or less erect, grayish with brown tips, subulate, 

 slightly curved; radial spines 14 to 21, 10 to 20 

 mm. long; central spines 4 to 7, 25 to 30 mm. 

 long; flowers 4.5 cm. long, citron to golden; 

 stigma-lobes yellowish ; scales of the ovary filled 

 with wool and bristles. 



Type locality: Argentina. 

 Distribution: Western Argentina. 



Fig. 212. Malacocarpus catamarcensis. 



Fig. 213. Malacocarpus patagonicus. 



We know this species chiefly from the original description and photograph obtained by 

 Dr. Rose in 1915 from Dr. Spegazzini. To it we have referred a living plant collected by 

 Dr. Ales Hrdlicka in Argentina in 19 10, which has flowered with us on one or two occasions. 



Figure 212 is from a photograph of the plant collected by Ales Hrdlicka. 



16. Malacocarpus patagonicus (Weber). 



Echinocactus intertexlus Philippi, Linnaea 33: 81. 1864. Not Engelmann, 1856. 

 Cereus patagonicus Weber in Spegazzini, Rev. Agron. La Plata 3: 604. 1897. 

 Echinocactus coxii Schumann, Gesamtb. Kakteen 422. 1898. 

 Cereus duseni Weber, Anal. Soc. Cient. Argentina 48: 49. 1899. 



Usually simple and erect, slender, cylindric, 6 dm. long or less, 3 to 5 dm. in diameter, very 

 spiny, green or somewhat glaucous-green; ribs 6 to 10, straight or spiraled, somewhat undulate; 

 areoles approximate; radial spines 6 to 10, spreading; central spines 1 to 3, much stouter, subulate, 

 some of them sometimes more or less hooked; flowers from near the top of plant, 3.5 cm. long, fully 

 as broad when expanded, inodorous; inner perianth-segments pale rose-colored, spatulate, 18 mm. 

 long, 8 mm. broad, mucronate; fruit about 2 cm. long, greenish; style thick, 15 mm. long; stigma- 

 lobes black-purple; ovary turbinate, 8 mm. in diameter, the axils of its scales woolly and bristly; 

 seeds 2.5 mm. broad. 



