GYMNOCALYCIUM. 163 
18. Gymnocalycium kurtzianum (Giirke). 
Echinocactus kurtzianus Giirke, Monatsschr. Kakteenk. 16: 55. 1906. 
Simple, globose but depressed, 10 to 15 cm. in diameter, naked at apex; ribs 1o to 18, divided 
into tubercles; radial spines 8, spreading, brownish, with recurved tips, 2.5 to 4 cm. long; central 
spine solitary, 3 cm. long; flowers large, white, reddish at base; scales on ovary large; inner perianth- 
segments obtuse. 
Type locality: Probably Cérdoba, Argentina. 
Distribution: Argentina. 
The plant is known to us only from descriptions and illustrations. 
This species was named for Dr. Fritz Kurtz (1854-1920) who lived for many years in 
Argentina. 
Illustrations: Monatsschr. Kakteenk. 17: 126; Bliihende Kakteen 2: pl. 97, as Echino- 
cactus kurtzianus. 
Figure 174 is copied from the second illustra- 
tion above cited. 
19. Gymnocalycium damsii (Schumann). 
Echinocactus denudatus bruennowianus Haage jr., 
Monatsschr. Kakteenk. 8: 37. 1898. 
Echinocactus damsii Schumann, Gesamtb. Kakteen 
Nachtr. 119. 1903. 
Simple, globular or somewhat depressed; ribs 10, 
green, tuberculate; spines all radial, straight, short, the 
longest 12 mm. long; flowers narrow, funnelform, 6 cm. 
long; inner perianth-segments oblong, white to light 
pinkish, spreading; scales on the ovary and flower-tube 
small, scattered; fruit oblong, 2.5 cm. long, 6 mm. in 
diameter, red. 
Type locality: Northern part of Paraguay. 
Distribution: Paraguay. ; 
The plant is known to us only from descrip- 
tions and illustrations. 
Illustrations: Blithende Kakteen 2: Pr 83; Fic. 175.—Gymnocalycium damsii. 
Schumann, tb. -Kakteen Nachtr. f. 27; | 
Hirer Si wie 14: 76, as Echinocactus damsii; Cact. Journ. 1: 53, as Echinocactus 
denudatus brunnowianus. i _ ted 
Figure 175 is copied from the first illustration above cited. 
20. Gymnocalycium platense (Spegazzini). 
: ; ini . 28. 1896. 
Echinocactus platensis Spegazzin, ari ‘Ouchi, Monatsschr. Kakteenk. 9: 43. 1899. 
Echinocactus stenocarpus Schumann, Monatsschr. Kakteenk. 10: 181. 1900 
J 7 ini . Buenos Aires Ill. 2:8. 1902. 
Cea eae a veaeis typicus So een, Anat Mus Nec. Buenos Aires III. 4: 504. 1905. 
Echinocactus platensis typicus Spegazzini Anal. Mus. Nac. Buenos Aires III. 4: 504. 1905. 
ires III. 4: 504. 1905. 
Anal. Mus. Nac. Buenos Aires I 
l ; ini Tac. Buenos Aires III. 4:505- 1905: 
eis i vame Po eval. M +—e Buenos Aires III. 4: 505. 1905- Not Scheidweiler, 
Echipocactus baldianus Spegazzini, Anal. Mus. Nac. Buenos Aires III. ol no veen or purple oF 
Plants small, depressed, half-hidden in the earth, 4 to 9 cm. broad, 1 tubercles with a hori- 
bronzed; ribs 8 to 12, broad and low, divided by cross nes ite-felted; spines 3 to 6, 1 cm. long or 
zontal or ascending chin-like projection, areoles when young 4" " flower inodorous, 6 cm. long, dull 
less, brown with white tips, acicular, more OF less oP Pree nd d scales, these more or less purplish 
bluish green; tube and ovary bearing a few broad, short, round&¢ s down the center; inner perianth- 
on the edge; outer perianth-segments white with a broad green een ttered over the throat: 
segments pure white: throat broad, purple within, filaments a roblong. 
style short and thick, 2 cm. long; stigma-lobes cream-colored; ovary . 
