THE CACTACEAE. 
156 
8: 36, 37. 1898), var. roseiflorus Hildmann (Schumann, Gesamtb. Kakteen 414. 1898), and 
bruennowii and flavispinus (Schelle, Handb. Kakteenk. 189. 1907). 
Echinocactus denudatus paraguayensis, 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: pi. 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. 
Fig. 163. —Gymnocalycium denudatum. Fig. 164. —Gymnocalycium leeanum. 
Illustrations: Martius, FI. Bras. 4 2 : pi. 50, f. 1; Mollers Deutsche Gart. Zeit. 25: 474. 
f. 6, No. 3; Bliihende Kakteen 1: pi. 59; Schumann, Gesamtb. Kakteen f. 72; Monatsschr 
Kakteenk. 3: 158. f. I; 14: 41; 29: 141; Link and Otto, Icon. PI. Rar. pi. 9; Schelle, Handb 
Kakteenk. 188. f. 119, as Echinocactus denudatus; De Laet, Cat. Gen. f. 10; Tribune Hort. 
4: pi. 139, as E. denudatus var.; Schelle, Handb. Kakteenk. 189. f. 120, as E. denudatus 
bruennowii; Schelle, Handb. Kakteenk. 189. f. 121, as E. denudatus delaetii; Schelle, Handb. 
Kakteenk. 189. f. 122, as£. denudatus heuschkehlii; De Laet, Cat. Gen. f. 18, as Echinocactus 
denudatus paraguayensis; Garten-Zeitung 4: 479. f. m, as E. denudatus intermedins. 
Figure 163 is copied from the third illustration above cited. 
7 . Gymnocalycium hyptiacanthum (Lemaire). 
Echinocactus hyptiacanthus Lemaire, Cact. Gen. Nov. Sp. 21. 1839. 
Cactus hyptiacanthus Lemaire in Steudel, Nom. ed. 2. 1: 246. 1840. 
Echinocactus hyptiacanthus el eut her acanthus Monville in Labouret, Monogr. Cact. 249. 1853. 
Echinocactus hyptiacanthus megalotelus Monville in Labouret, Monogr. Cact. 249. 1853. 
Echinocactus hyptiacanthus nitidus Monville in Labouret, Monogr. Cact. 249. 1853. 
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- 
