NEOMAMMILLARIA. 1 75 



Mammillaria Tomentosa Ehrenberg, Allg. Gartenz. 17: 262. 1849. 



Cactus tomentosiis Kuntze, Rev. Gen. PI. i: 261. 1891. 

 Mammillaria varimamma Ehrenberg, Allg. Gartenz. 17: 242. 1849. 



Cactus varimamma Kuntze, Rev. Gen. PI. i: 261. 1891. 

 Mammillaria wegbneri Ehrenberg, Bot. Zeit. i: 738. 1843. 



Cactus wegeneri Kuntze, Rev. Gen. PI. i: 261. 1891. 

 Mammillaria zegschwitzii Terscheck, Suppl. Cact. Verz. i. 



Cactus zegschwitzii Kuntze, Rev. Gen. PI. i: 261. 1891. 

 Mammillaria zepnickii Ehrenberg, Bot. Zeit. 2: 835. 1844. 



Cactus zepnickii Kuntze, Rev. Gen. PI. i: 261. 1891. 



NAMES TO BE EXCLUDED FROM THIS GENUS. 



The names Mammillaria solitaria, M. spinosa, M. caudata, M. amhigiia, and M. 

 quadrata, credited to G. Don, with the synonyms Cactus solitarius, C. spinosus, C. caudatus, 

 C. ambiguus [Not Bonpland, 1813], and C. quadratus, credited to Gillies, respectively, each 

 with a single word description, viz., solitary, spiny, tailed, ambiguous, quadrate, appeared 

 in 1830 (Loudon, Hort. Brit. 194). As they all are said to come from Chile they can not 

 be of this alliance. 



Mammillaria brachydelphys Schumann (Just, Bot. Jahresb. 26: 343. 1898) seems to 

 have been intended for Maihuenia brachydelphys. 



Cereiis caudatus Gillies (Sweet, Hort. Brit. ed. 3. 285. 1839) is probably the same as 

 M. caudata. 



Mammillaria corioides Bosch (Sweet, Hort. Brit. ed. 3. 281. 1839) was described as 

 leather-like and native of South America. It can not be identified, but it is not of this 

 relationship if it comes from South America. Schumann referred it to Echinocactus, but 

 it does not belong to that genus as we now define it. 



Mammillaria dichotoma (Sweet, Hort. Brit. ed. 3. 281. 1839), described only as 

 forked, can not be identified. 



Mammillaria mitis (De Candolle, Prodr. 3 : 460. 1828), without description, is credited 

 to Miller (Diet. Gard.), but Miller never used the generic name Mammillaria. Pfeiffer 

 and Forster also refer this name to Miller. Steudel states that it is from South America. 

 Kuntze also refers to the same as Cactus mitis (Rev. Gen. PI. i: 259. 1891). Schumann 

 thought that it might be an Echinocactus and, if it really came from South America, as 

 stated by the Index Kewensis, it is probably of the Echinocactanae . 



Mammillaria speciosa Gillies (Sweet, Hort. Brit. ed. 2. 235. 1830), to which Cactus 

 speciosus GilUes is referred as a synonym, is based upon some Chilean plant. 



Mammillaria subulata Miihlenpfordt is listed both by Schumann and the Index 

 Kewensis but the name intended was Pereskia subulata! 



Mammillaria childsi Blanc, Illustr. Cat. 14. 1894. 



"This fine Mammillaria was sent out by us as M. pectinata before we bloomed it, from the fact 

 that small plants answered the description exactly. After blooming, however, we discovered that 

 it was a valuable new variety and named it as above. When small, the spines are regular, short and 

 white; as the plant becomes older the spines also increase in size and assume a beautiful purple 

 color. Flowers very numerous, even on small plants; color a clear pink." 



We have not been able to identify this plant definitely. From the illustration, which 

 shows large flowers from the center of the plant, we judge that it can not be referred to 

 Neomammillaria nor to any of its near relatives. It may be a Coryphantha; in fact,|at 

 first it was taken for C. pectinata. The spines, however, are shown as arranged on vertical 

 ribs, while the central spine is shown as erect; these two characters along with the central 

 purple flowers suggest Echinomastus erectocentrus . 



Illustration: Blanc, Illustr. Cat. 14. 



