MALACOCARPUS. 193 



Illustrations: Lemaire, Icon. Cact. pi. 6; Loudon, Encycl. PI. ed. 3. 1376. f. 19366; 

 Forster, Handb. Cact. ed. 2. 551. f. 70; Curtis's Bot. Mag. 70: pi. 41 15; Pfeiffer, Abbild. 

 Beschr. Cact. 2: pi. n ; Bluhende Kakteen 2: pi. 94; Anal. Mus. Nac. Montevideo 5: pi. 9; 

 Monatsschr. Kakteenk. 29: 141; Schelle, Handb. Kakteenk. 179. f. 113; 180. f. 114; Wiener 

 111. Gart. Zeit. 29: f. 104; Rumpler, Sukkulenten 178. f. 97; Palmer, Cult. Cact. 129; De 

 Laet, Cat. Gen. f. 8; Engler and Prantl, Pflanzenfam. 3 6 ": f. 63; Watson, Cact. Cult. 94. 

 f. 29; ed. 3. 50. f. 2i, as Echinocactus concinnus; Curtis's Bot. Mag. 112: pi. 6867, as 

 Echinocactus joadii. 



9. Malacocarpus tabularis (Cels). 



Echinocactus concinnus tabularis Cels in Forster, Handb. Cact. ed. 2. 552. 1885. 

 Echinocactus tabularis Cels in Schumann, Gesamtb. Kakteen 3S9. 1898. 



Simple, globose or short-columnar; ribs 16 to 18, somewhat crenate, obtuse, glaucous; radial 

 spines 16 to 18, acicular; central spines 4; flowers yellow, 6 cm. long; perianth-segments narrow, 

 acute; scales of ovary bearing dense wool and long brown bristles in their axils; seeds hemispheric 

 or dome-shaped with a broad truncate base, brownish, papillose-roughened, about 1 mm. broad. 



Type locality: Not cited definitely. 



Distribution: Brazil or Uruguay. 



In the first two illustrations cited, the flowers are not shown as coming from the apex 

 of the plant as one would expect. 



The illustration given by Schumann (Gesamtb. Kakteen f. 66) suggests Malacocarpus 

 concinnus. 



Echinocactus tabularis cristatus Rebut seems to be only a garden form. 



Illustrations: Bluhende Kakteen 1: pi. 23; (?) Schumann, Gesamtb. Kakteen f. 66; 

 Monatsschr. Kakteenk. 26: 57; 29: 141; Anal. Mus. Nac. Montevideo 5: pi. 6, as Echino- 

 cactus tabularis. 



Figure 205 is copied from the first illustration cited above. 



10. Malacocarpus scopa (Sprengel). 



Cactus scopa Sprengel, Syst. 2: 494. 1825.* 



Cereus scopa Salm-Dyck in De Candolle, Prodr. 3: 464. 1828. 



Echinocactus scopa Link and Otto, Icon. PI. Rar. 81. 1830. 



Echinocactus scopa candidus Pfeiffer, Enum. Cact. 64. 1837. 



Echinopsis scopa Carriere, Rev. Hort. 47: 374. 1875. 



Echinocactus scopa albicans Arechavaleta, Anal. Mus. Nac. Montevideo 5: 199. 1905. 



At first globular but becoming cylindric to clavate, 1 to 4.5 dm. high; ribs 30 to 40, low, obtuse, 

 almost hidden by the spines; radial spines 40 or more, white, setaceous, spreading; central spines 

 about 4, brown or purple, much stouter than the radials; flowers lemon-yellow, widely spreading 

 and then 6 cm. broad; inner perianth-segments in 2 series, spatulate, somewhat toothed above; 

 stigma-lobes about 10, bright red; scales on the ovary bearing wool and conspicuous brown bristles. 



Type locality: Not cited. 



Distribution: Southern Brazil and Uruguay. 



Echinocactus scopa candidus cristatus, E. scopa cristatus Hortus, E. scopa ruberrimus, 

 and E. scopa rubrinus Link and Otto may or may not be published varietal names. 



Illustrations: Cact. Journ. 1: 57; Gartenwelt 15: 539; Watson, Cact. Cult. 119. f. 45, 

 as Echinocactus scopa cristatus; Cact. Journ. 1: 67; Gartenwelt 9: 267; Schelle, Handb. 

 Kakteenk. 176. f. 107; 177. f. 109, as E. scopa candidus cristatus; Anal. Mus. Nac. Monte- 

 video 5: pi. 8, as E. scopa albicans; Mollers Deutsche Gart. Zeit. 25: 474. f. 6, No. 13 ; Schelle, 

 Handb. Kakteenk. 175. f. 106, as E. scopa candidus; Rev. Hort. 47: 374. f. 60, as Echinopsis 



*We have credited the name, Cactus scopa, to Sprengel, as above. He marks it with an asterisk (*) as he does 

 all his new names. The usual citation is to Link (Enum. Hort. Berol. 2:21. 1822) who in the place cited does list a 

 number of species of Cactus but not C. scopa. It is remarkable how general this error has become for we find it in 

 De Candolle (Prodr. 3: 464. 1828), Pfeiffer (Enum. Cact. 64. 1837), Forster (Handb. Cact. 304. 1846), Labouret 

 (Monogr. Cact. 238. 1853), Hooker (Curtis's Bot. Mag. 90: pi. 5445), Schumann (Gesamtb. Kakteen 381. 1898), the 

 Index Kewensis, and elsewhere. 



