ECHINOCACTUS. 177 



Cactus depressus Haworth (Syn. PI. Succ. 173. 1812). Haworth's plant, however, was 

 described as having 10 ribs and was believed to be related to Cactus gibbosus, that is to 

 Malacocarpus. 



Echinocactus echinatus Forbes, Journ. Hort. Tour Germ. 152. 1837. 

 Like a hedgehog cactus; ribs 19; spines light brown, elongated. 



This species is so briefly described that it can not be definitely identified. It is perhaps 

 a Ferocactus. It is said to have come from Mexico. 



Echinocactus geissei Poselger in Schumann, Gesamtb. Kakteen 406. 1898. 



Echinocactus geissei albicans Hildmann in Schumann, Gesamtb. Kakteen 406. 1898. 



Neither has this species nor its variety been known to flower and as we have not seen 

 the plants we are not able to suggest their relationship. The only illustration which we 

 have seen (Mollers Deutsche Gart. Zeit. 25: 474. f. 6, No. 14) indicates that it is not a true 

 Echinocactus. It is recorded as from Chile or Bolivia. 



Echinocactus hamatus Forbes, Journ. Hort. Tour Germ. 152. 1837. 



Undoubtedly different from Miihlenpfordt's species of the same name. It presumably 

 had hooked spines judging from the name ; and was briefly described as having a depressed 

 stem, 21 ribs, and 7 gray spines. Forbes reports it was introduced from Buenos Aires in 

 1833. It does not answer to any Argentine plant we know. 



Echinocactus malletianus Lemaire, Allg. Gartenz. 13: 387. 1845. 



Stems Jsimple, depressed-globose or somewhat cylindric, very woolly at the top, 1 dm. high; 

 ribs 15 to 17, more or less repand; spines straight, acicular, black; radial spines 5 or 6, suberect; 

 central spine solitary; flowers and fruit unknown. 



Type locality: Not cited. 



Distribution: According to Schumann, Chile or Bolivia. 



Dr. Rose obtained from L. Quehl a photograph of this species as it is now represented 

 in collections. Its relationship is doubtful but it should certainly not be placed just after 

 E. horizonthalonius as it was by Schumann. 



Echinocactus mutabilis Forster, Hamb. Gartenz. 17: 161. 1861. 



Simple, globose; ribs 10, sinuate and tuberculate, yellowish green to violet; radial spines 7 or 8, 

 spreading, straight or somewhat curved, dull yellow; central spine solitary, straight, porrect. 



Type locality: Peru. 



Distribution: Reported from Peru, but since this species was discovered the southern 

 provinces have been annexed by Chile. It is not of this genus. 



Echinocactus odieri Lemaire in Salm-Dyck, Cact. Hort. Dyck. 1849. 174. 1850. 



Echinocactus araneifer Labouret, Monogr. Cact. 248. 1853. 

 Echinocactus odierianus Monville in Weber, Diet. Hort. Bois 470. 1896. 



Small, nearly globular, 5 cm. in diameter, purplish; ribs indefinite, broken up into tubercles, 

 more or less spiraled; spines all radial, brownish to gray, 6 to 9, appressed, small, about 2 mm. long; 

 flowers white, rose-colored without, about 5 cm. broad; outer perinth-segments narrowly lanceolate, 

 acuminate, reddish green with dark purple tips; inner perianth-segments broadly lanceolate, acute, 

 the margins serrate, white within, pale rose without; filaments white; style red, longer than the 

 stamens; stigma-lobes 14, erect, flesh-colored. 



Type locality: Not cited. 



Distribution: Copiapo, Chile. 



We do not know this species. It seems to have been well known in Europe at one time. 

 Mr. Sohrens of Chile tells us he has seen it near Huasco, Chile. We are very uncertain 

 as to its generic relationship. It may be a near relative of Lobivia cumingii. 



