FEROCACTUS. 143 



(and as a synonym only) to Steud. Norn. Bot. Phan. 132. 1S21, where it appears as a synonym of 

 Cactus nobilis. I doubt if the name was ever published anywhere, but do not think that at any time 

 in its history it had anything to do with Cercus multangularis." 



Echinocactus glaucus Karwinsky (Pfeiffer, Enum. Cact. 57. 1S37), although never 

 described, was referred to this species as a synonym. Dr. Rose examined the type of Echino- 

 cactus spiralis in Munich in 191 2 and believes that it belongs here; Echinocactus agglo- 

 meratus (Pfeiffer, Enum. Cact. 60. 1837) was referred as a synonym of Echinocactus 

 spiralis. 



The following varieties seem to be only color or spine forms: Echinocactus recurvus 

 latispinus, E. recurvus solcnacanthus, and E. recurvus tricuspidatus (Forster, Handb. Cact. 



317. 1846) and E. recurvus bicolor (Monatsschr. Kakteenk. 20: 144. 1910). 

 Illustrations: Schelle, Handb. Kakteenk. 162. f. 91; Monatsschr. Kakteenk. 16: 73; 



21: 149; Mollers Deutsche Gart. Zeit. 29: 440. f. 16; Abh. Bayer. Akad. Wiss. Miinchen 2: 

 (see 738) pi. 1, sec. 7, f. 4; Knippel, Kakteen pi. 10; R. Grassner, Haupt-Verz. Kakteen 

 191 2: 13, as Echinocactus recurvus; Verh. Ver. Beford. Gartenb. 3: pi. 20, as Melocactus 

 recurvus; Rev. Hort. 61: f. 140; Nov. Act. Nat. Cur. 19: pi. 16, f. 4, 7, as Echinocactus 

 spiralis. 



Figure 150 is copied from the last illustration above cited. 



26. Ferocactus latispinus (Haworth). 



Cactus latispinus Haworth, Phil. Mag. 63: 41. 1824. 



Echinocactus cornigerus P. De Candolle, Mem. Mus. Hist. Nat. Paris 17: 36. 1828. 

 Mammillaria latispina Tate in Loudon, Gard. Mag. 16: 26. 1840. 

 Echinofossulocactus cornigerus Lawrence in Loudon, Gard. Mag. 17: 318. 1841. 

 Echinofossulocactus cornigerus elatior Lawrence in Loudon, Gard. Mag. 17: 318. 1841. 

 Echinofossulocactus cornigerus rubrospinus Lawrence in Loudon, Gard. Mag. 17: 318. 1841. 

 Echinofossulocactus cornigerus angustispinus Lawrence in Loudon, Gard. Mag. 17: 318. 1841. 

 Echinocactus latispinus Hemsley, Biol. Centr. Amer. Bot. 1: 533. 1880. 

 Echinocactus latispinus flavisp-inus Weber, Diet. Hort. Bois 467. 1896. 



Plant simple, globular or somewhat depressed, 2.5 to 4 dm. high, 4 dm. in diameter; ribs 15 to 23, 

 but usually 21, prominent; areoles large; radial spines 6 to 10, slender, annulate, white to rose, 2 to 

 2.5 cm. long; central spines 4 or more, stouter and more highly colored than the radials, all straight 

 except one, this much flattened and hooked; flowers campanulate, 2.5 to 3.5 em. long, rose to purple; 

 perianth-segments narrowly oblong, acute; scales on the ovary closely imbricated, thin and papery, 

 ovate, with thin ciliate margins; scales on flower-tube similar to those on ovary but more elongated; 

 fruit elongated, 4 cm. long (dehiscence not known); seeds described as reniform, slightly pitted, 

 1.5 mm. long. 



Type locality: Mexico. 



Distribution: Widely distributed in Mexico; reported from Guatemala by De Candolle. 



A plant sent to the New York Botanical Garden by A. de Lautreppe from Mexico 



in 1905 flowered in November 1913, the same flower opening successively for four days. 



Echinocactus cornigerus var. flavispinus and var. latispinus (Forster, Handb. Cact. 



318. 1846), published as synonyms, belong here. 



Melocactus latispinus (Pfeiffer, Enum. Cact. 56. 1837) is also to be referred here. 

 Echinocactus cornigerus Mocino and Sesse (De Candolle, Prodr. 3: 461. 1828) occurs as 

 a synonym of this plant. 



Echinocactus cornigcr rubrispinosus (Monatsschr. Kakteenk. 12: 59. 1902) is probably 

 a form of this species. 



Illustrations: Abh. Bayer. Akad. Wiss. Miinchen 2: pi. 3, f. 2; Schumann, Gesamtb. 

 Kakteen f. 4, 62; Mem. Mus. Hist. Nat. Paris 17: pi. 7; De Candolle, Mem. Cact. pi. 10; 

 Cact. Journ. 1 : 54; 2: 173; Schelle, Handb. Kakteenk. 164. f. 94; Ann. Rep. Smiths. Inst. 

 1908: pi. 13, f. 6; Forster, Handb. Cact. ed. 2. 507. f. 60; Diet. Gard. Nicholson 4: 538. f. 

 19; Suppl. 334. f. 354; Riimpler, Sukkulenten 184. f. 102; Watson, Cact. Cult. 96. f. 31, as 

 Echinocactus cornigerus; Cact. Journ. 1: pi. for March; Monatsschr. Kakteenk. 21: 11, as 

 E. comiger flavispinus. 



