MALACOCARPUS. 205 
neither flowers nor fruit. We have taken it up in Malacocarpus since its relation- 
ship. appears nearer to species of this genus than to those of other described 
genera. . 
The name Echinocactus leninghausii cristatus is given by Schelle (Handb. Kakteenk. 
178. 1907). 
Illustrations: Cact. Journ. 2: 4, as Pilocereus leninghausti; Schelle, Handb. Kakteenk. 
178. f. 110; Mollers Deutsche Gart. Zeit. 25: 474.f. 6, No. 5; 27; Haage and Schmidt, Haupt- 
Verz. 1919: 169; 1920: 127.f. 10779; De Laet, Cat. Gén. f. 7, as Echinocactus leninghausiti. 
28. Malacocarpus graessneri (Schumann). 
Echinocactus graessneri Schumann, Monatsschr. Kakteenk. 13: 130. 1903. 
Stems simple, depressed, 5 to 6 cm. high. 9 to 10 cm. in diameter, somewhat umbilicate at 
apex; ribs very numerous (more than 60), low, usually arranged in spirals, tuberculate; areoles 
bearing numerous bright yellow spines, 2 cm. long, the 3 to 6 central spines stouter and darker 
yellow; flowers small, narrow, from near the center of the plant. 
Type locality: State of Rio Grande do Sul, Brazil. 
Distribution: Southern Brazil. 
This species must be a near relative of M. haselbergii, but with more ribs and slightly 
different spines and flowers. Both species are referred to this genus only tentatively. 
They very much resemble Rebutia fiebrigii in their form, ribs, and spines. Echinocactus 
graessneri is offered in the trade catalogues of Europe, but we know it anly from descrip- 
tions and illustrations and from some small plants sent us by Haage and Schmidt. 
Illustrations: Monatsschr. Kakteenk. 23: 3; Gartenwelt 15: 536; Mollers Deutsche 
Gart. Zeit. 25: 474. f. 6, No. 20; 489. f. 23, as Echinocactus graessnert. 
29. Malacocarpus escayachensis (Vaupel). 
Echinocactus escayachensis Vaupel, Monatsschr. Kakteenk. 26: 125. 1916. 
Globose, 12 cm. in diameter, very woolly at apex; ribs about 15; areoles approximate, short- 
tomentose; spines about 20, unequal, some curved, others straight; flower 2.5 cm. long. 
Type locality: Escayache near Tarija, Bolivia. 
Distribution: Southern Bolivia. 
MALACOCARPUS sp. 
Simple, or in clusters, short-cylindric, 1 dm. high; ribs about 15, low, broad, somewhat tuber: 
cled; radial spines 10 to 12, acicular, ascending, 2 to 3 cm. long, brownish, darker toward t e tip : 
central spine usually solitary and hooked, a little stouter than the radials; flowers dull red, small, 
extending only a short distance beyond the spines. 
Collected by Juan Sdhrens in Tacna, Chile, altitude 3,000 meters, in 191 I. Dr. Rose 
obtained a few clusters of spines from Mr. Sdhrens’s specimen in 1914. Mr. Sdhrens has a 
photograph of it also. 
The above species does not agree with any of the known species of South America. 
It is the only one of the Echinocactus relationship on the Pacific side of South America which 
has hooked spines. Mr. Sdhrens believed it was a new species of Echinocactus. 
PUBLISHED OR RECORDED SPECIES, PROBABLY REFERABLE TO THIS GENUS. 
ECHINOCACTUS ELACHISANTHUS Weber, Bull. Mus. Hist. Nat. Paris 10: 387. 1904. 
Stem cylindric, 25 cm. high, 12 cm. in diameter, ribs very numerous, 4 5 or more, spiraled, divided 
into tubercles; radial spines 12 to 15, setaceous, white, 5'to 12 mm. long; flowers very small, 12 to 
sh green; ovary green, small, spiny; 
15 mm. long; flower-tube very short; perianth-segments yellows 
fruit greenish, 5 to 6 mm. in diameter; seeds small, dark brown. 
Type locality: Northeast of Maldonado, Uruguay. 
Distribution: Uruguay. 
