156 THE CACTACEAE. 
8: 36, 37. 1898), var. roseiflorus Hildmann (Schumann, Sie pakteen 414. 1898), and 
M avispinus (Schelle, Handb. Kakteenk. 189. 1907). 
see inowuctie venedlatas pana sometimes credited to Mundt and sometimes to 
Haage jr., has not been formally published, but has been illustrated as follows: Schelle, 
Handb. Kakteenk. 190. f. 123; Tribune Hort. 4: pl. 140; Gartenwelt 9: 266; De Laet, Cat. 
Gen. f. 3. This plant has been referred to by Schumann (Monatsschr. Kakteenk. 13: 50, 
51, 109) as Echinocactus paraguayensis. 
Fic. 163.—Gymnocalycium denudatum. Fic. 164.—Gymnocalycium leeanum. 
Illustrations: Martius, Fl. Bras. 4?: pl. 50, f. 1; Méllers Deutsche Gart. Zeit. 25: 474. 
f. 6, No. 3; Blithende Kakteen 1: pl. 59; Schumann, Gesamtb. Kakteen f. 72; Monatsschr 
Kakteenk. 3: 158. f. I; 14: 41; 29: 141; Link and Otto, Icon. Pl. Rar. pl. 9; Schelle, Handb 
Kakteenk. 188. f. 119, as Echinocactus denudatus; De Laet, Cat. Gen. f. 10; Tribune Hort. 
4: pl. 139, as E. denudatus var.; Schelle, Handb. Kakteenk. 189. f. 120, as EF. denudatus 
bruennowii; Schelle, Handb. Kakteenk. 189. f. 121, as E. denudatus delaetii; Schelle, Handb. 
Kakteenk. 189. f. 122, as E. denudatus heuschkehlii; De Laet, Cat. Gen. f. 18, as Echinocactus 
denudatus paraguayensis; Garten-Zeitung 4: 479. f. 111, as E. denudatus intermedius. 
Figure 163 is copied from the third illustration above cited. 
7. Gymnocalycium hyptiacanthum (Lemaire). 
Echinocactus hyptiacanthus Lemaire, Cact. Gen. Nov. Sp. 21. 
Cactus hyptiacanthus Lemaire in Steudel, Nom. ed. 2. 1: 246. 
Echinocactus hyptiacanthus eleutheracanthus Mo 
Echinocactus hyptiacanthus megalotelus Monvill 
Echinocactus hyptiacanthus nitidus Monville in 
Simple, globose or sometimes depressed, 5 to 7 cm. in diameter, dull green, the apex somewhat 
umbilicate; ribs 9 to 12, broad, obtuse, somewhat tuberculate; radial spines 5 to 9, spreading or 
appressed, 10 to 12 mm. long, flexible, sometimes pubescent; central spine solitary or wanting; 
flowers white, 4.5 to 5 cm. long. 
Type locality: Not cited. 
Distribution: Uruguay. 
This plant is sometimes distributed as Echinocactus multiflorus, but it is very different 
from that species. It was first described from barren plants, but afterwards Labouret 
described the flowers as white as did also Arechavaleta and Giirke. We believe, there- 
1839. 
1840. 
nville in Labouret, Monogr. Cact. 249. 1853. 
e in Labouret, Monogr. Cact. 249. 1853. 
Labouret, Monogr. Cact. 249. 1853. 
