GYMNOCALYCIUM. 



159 



pi. 137; Doddiges, Bot. Cab. 16: pi. 1524; Reichenbach, Fl. Exot. pi. 326, as Cactus gib- 

 bosus; Pfeiffer, Abbild. Beschr. Cact. 2: pi. 12, as Gymnocalycium reductnm; Curtis's Bot. 

 Mag. 64: pi. 3561, as Echinocactus mackieanus; Curtis's Bot. Mag. 75: pi. 4443, as Cereus 

 reductus; Monatsschr. Kakteenk. 30: 181, as Echinocactus gibbosus nobilis. 



Figure 166 is from a photograph obtained by Dr. Rose from Dr. Spegazzini in 1915. 



11. Gymnocalycium multiflorum (Hooker) Britton and Rose, Addisonia 3:5. 1918. 



Echinocactus multiflorus Hooker in Curtis's Bot. Mag. 71: pi. 4181. 1845. 

 Simple or eespitose, globular or somewhat depressed or sometimes short-columnar, 9 cm. high or 

 more, sometimes 12 cm. in diameter; ribs 10 to 15, broad at base, somewhat tubercled, especially 

 above, acutish; areoles elliptic, 10 mm. long; spines 7 to 10, all radial, spreading, somewhat flattened, 

 stout, yellowish, the longest one 3 cm. long; flower-bud ovoid, covered with imbricate scales; flowers 

 3.5 to 4 cm. long, pinkish to nearly white, short-campanulate ; inner perianth-segments oblong, 

 3 cm. long, obtuse or acute; scales on the ovary broad and rounded, their margins scarious. 



Type locality: Not cited. 



Distribution: Reported from Brazil, Uruguay, Paraguay, and Argentina. We know 

 it definitely from Argentina, where it was collected by Dr. Rose in 1915, in Cordoba. 



Schumann (Gesamtb. Kakteen 405. 1898) describes briefly the three following varie- 

 ties: albispinus, parisiensis, and hybopleurus. 



Echinocactus ourselianus Monville (Salm-Dyck, 

 Cact. Hort. Dyck. 1849. 34. 1850) is cited by 

 Schumann as a synonym of this species, but it was 

 never published ; the name was attributed to Cels 

 by Salm-Dyck. Its variety albispinus (Monats- 

 schr. Kakteenk. 5: in. 1895) is sometimes met 

 with. 



Illustrations: Mollers Deutsche Gart. Zeit. 25: 

 474. f. 6, No. 22; Loudon, Encycl. PI. ed. 3. 1376. 

 f. 19369; Monatsschr. Kakteenk. 26: 67; Curtis's 

 Bot. Mag. 71: pi. 4181 ; Bliihende Kakteen i:pl. 

 30, as Echinocactus multiflorus; Addisonia 3: pi. 

 83, A. 



Plate xviii, figure 3, shows a flowering plant 

 brought by Dr. Rose from Cosquin, Argentina, to 

 the New York Botanical Garden in 1915, where it promptly bloomed. Figure 167 is from 

 a photograph of a plant from Catamarca, Argentina, contributed by Dr. Spegazzini. 



12. Gymnocalycium brachyanthum (Giirke). 



Echinocactus brachyanthus Giirke, Monatsschr. Kakteenk. 17: 123. 1907. 

 Stem simple, depressed-globose, 7 cm. high, 18 cm. in diameter; ribs 22, strongly tubercled; 

 tubercles 5 or 6-sided; areoles elliptic; spines 5 to 7, all radial, subulate, yellowish, 10 to 25 mm. long; 

 flowers, including the ovary, 3 to 5 cm. long, campanulate; inner perianth-segments white to rose- 

 colored ; scales of the ovary few, broader than long, rounded, the margin scarious. 



Type locality: Argentina. 

 Distribution: Northern Argentina. 



We have studied a plant sent to the New York Botanical Garden from Berlin in 

 1914 which has not yet flowered. 



13. Gymnocalycium anisitsii (Schumann). 



Echinocactus anisitsii Schumann. Bliihende Kakteen 1: pi. 4. 1900. 

 Simple, short-cylindric, about 1 dm. long, pale green; ribs 11, strongly tubercled, acute; spines 5 

 to 7, yellowish, slender, usually all radial, subulate, somewhat angled, tortuous, sometimes 6 cm. 

 long; flower 4 cm. long, somewhat funnelshaped ; scales and outer perianth-segments broad, greenish 

 white; inner perianth-segments white, broadly oblong, acute. 



Fie 



-Gymnocalycium ninltiflorutn. 



