136 THE CACTACEAE. 
Echinocactus robustus prolifer (Pfeiffer, Enum. Cact. 61. 1837) to which Echinocactus 
agglomeratus Karwinsky was assigned as a synonym seems to be the normal form o the 
species, while var. monstrosus (Pfeiffer, Enum. Cact. 61. 1837) is an abnormal form. oO it 
were referred also as synonyms Echinocactus spectabilis and E. subuliferus (Pfeiffer, Enum. 
Cact. 61. 1837). This latter name, according to Pfeiffer, is different from E. subuliferus 
Link and Otto (Verh. Ver. Beférd. Gartenb. 3: 427. pl. 27. 1827) collected in Mexico by 
. flowers and fruit were unknown. 
oP stron Nov. Act. Nat. Cur. 19: pl. 16, f. 3, 6; Contr. U. S. Nat. Herb. ro: pl. 16, 
f. A; Mollers Deutsche Gart. Zeit. 25: 474. f.6, No. 9; 29: 441. f. 17; Karsten and Schenck, 
Vegetationsbilder 1: pl. 44, as Echinocactus robustus; Verh. Ver. Beford. Gartenb. 3: pl. 
27, as [Echinocactus] subuliferus. 
Figure 141 shows the flower, copied from the first illustration above cited. Figure 143 
is from a photograph of the plant taken by 
Dr. Rose at El Reago, Puebla, Mexico, in 
1905. 
Fic. 143.—Ferocactus robustus. 
Fic. 144.—Ferocactus echidne. 
17. Ferocactus echidne* (P. De Candolle). 
Echinocactus echidne P. De Candolle, Mém. Cact. 19. 1834. 
Echinocactus vanderaeyi Lemaire, Cact. Alig. Nov. 20. 1838. 
Echinocactus dolichacanthus Lemaire, Cact. Aliq. Nov. 25. 1838. 
Echinofossulocactus vanderaeyi Lawrence in Loudon, Gard. Mag. 17: 318. 1841. 
Echinofossulocactus vanderaeyi ignotus-longispinus Lawrence in Loudon, Gard. Mag. 17: 318. 1841. 
Echinofossulocactus echidne Lawrence in Loudon, Gard. Mag. 17: 318. 1841. 
Echinocactus gilvus Dietrich, Allg. Gartenz. 13: 170. 1845. 
Echinocactus echidne gilvus Salm-Dyck, Cact. Hort. Dyck. 1849. 27. 1850. 
Echinocactus victoriensis Rose, Contr. U. S. Nat. Herb. 12: 291. 1909. 
Depressed-globose, 12.5 em. high, 18 cm. in diameter, green; ribs 13, acute, broad at base; 
areoles remote, velvety when young, oval in shape; radial spines rigid, about 7, about 2 cm. long, 
yellow; central spine solitary, porrect, 3 cm. long or more; flowers lemon-yellow; perianth-segments 
linear-oblong, acute, sometimes toothed near the apex; stigma-lobes about 10, elongated, spreading or 
reflexed; scales on the Ovary ovate, acute. 
Type locality: Mexico. 
Distribution: Hidalgo, Mexico. 
Echinocactus dolichocentrus Salm-Dyck (Cact. Hort. Dyck. 1844. 22. 1845) is usually 
referred here as a synonym but it was never described. 
Lllustrations: Blithende Kakteen 3: pl. 146; Schelle, Handb. Kakteenk. 156. f. 83; 
De Candolle, Mém. Cact. pl. 11, as Echinocactus echidne. 
Figure 144 is copied from the last illustration above cited. 
*Schumann has changed the spelling of this name to E. echidna. 
