NEOMAMMILLARIA. 1 23 



Mammillaria pyrrhocentra Otto, its var. gracilior (Salm-Dyck, Cact. Hort. Dyck. 

 1844. 8. 1845), and M. fulvispina pyrrhocentra Salm-Dyck (Cact. Hort. Dyck. 1849. 10. 

 1850) were referred as synonyms of M. rhodantha by Schumann, but were not described at 

 the places cited. 



Mammillaria aurea Pfeiffer (Forster, Handb. Cact. 200. 1846; M. rhodantha aurea 

 Salm-Dyck, Cact. Hort. Dyck. 1849. 11. 1850) is referred here. We have found no 

 description of it. M. odieriana aurea Salm-Dyck (Cact. Hort. Dyck. 1844. 7. 1845), 

 also un described, may be the same. 



Mammillaria rhodantha cristata (Forster, Handb. Cact. ed. 2. 292. 1885) is only an 

 abnormal form. 



Mammillaria recurvispina Hildmann (Schelle, Handb. Kakteenk. 257. 1907) is given 

 without synonymy or description. M. rhodantha schochiana (M. schochiana Hortus) is 

 also given at the same place, but so far as we can learn has not been published. 



Mammillaria tentaculata conothele Monville is given by Labouret (Monogr. Cact. 55. 

 1853) as a synonym of M. stueberi, while he refers M. tentaculata fulvispina (Monogr. Cact. 

 44. 1853) to M. fulvispina. 



Mammillaria tentaculata rubra (Forster, Handb. Cact. 207. 1846) was given as a 

 synonym of M. tentaculata ruficeps. 



Mammillaria olivacea was cited by Pfeiffer (Enum. Cact. 180. 1837) as a synonym of 

 M. tentaculata. 



Mammillaria neglecta was given as a synonym of M. rhodantha neglecta by Salm-Dyck 

 (Cact. Hort. Dyck. 1849. 11. 1850). 



Mammillaria rhodantha var. inuncta Hoffmannsegg was listed by Labouret (Monogr. 

 Cact. 45. 1853) as one of the synonyms of M. rhodantha. M. rhodantha rubra was given by 

 Riimpler (Forster, Handb. Cact. ed. 2. 292. 1885) as a synonym of M. rhodantha ruficeps,h\xt 

 afterwards was formally published by Schumann. 



Mammillaria rhodantha celsii Lemaire (Labouret, Monogr. Cact. 48. 1853) was given 

 as a synonym of M. lanifera. It probably belongs to M . rhodantha. Cactus capillaris was 

 made by Coulter because of the older Mammillaria lanifera of Haworth. Palmer's plant 

 from Saltillo (1880), preserved in the Missouri Botanical Garden, is very different and sug- 

 gests that the labels have been mixed. 



Illustrations: Knippel, Kakteen pi. 24; De Laet, Cat. Gen. f. 50, No. 9; Wiener lUustr. 

 Gart. Zeit. 29 : f . 22, No. 9 ; Haage and Schmidt, Haupt-Verz. Cact. 1912 : 37 ; Link and Otto, 

 Icon. PI. Rar. pi. 26; Gard. Chron. iii. 42: 290. f. 116; Schelle, Handb. Kakteenk. 256. f. 

 179; Gartenwelt 12: 200; Abh. Bayer. Akad. Wiss. Miinchen 2: pi. i, i. f. 3; Mollers 

 Deutsche Gart. Zeit. 25: 475. f. 8, No. 22, as Mammillaria rhodantha; Grassner, Haupt- 

 Verz. Kakteen 1912: 24; Schelle, Handb. Kakteenk. 258. f. 181, as Mammillaria rhodantha 

 pfeifferi; Grassner, Haupt-Verz. Kakteen 1912 : 24, as M. rhodantha fuscata; Schelle, Handb. 

 Kakteenk, 258. f. 180, as M. rhodantha fulvispina; Blanc, Cacti 73. No. 1434; Cact. Journ. 

 1 : 43, as M. odieriana; Cact. Journ. i : 43 ; pi. for February, as M. pfeifferi; Edwards's Bot. 

 Reg. 16: pi. 1329, as M. pulchra; Nov. Act. Nat. Cur. 19: pi. 16, f. 8, as Mammillaria 

 tentaculata. 



Figure 129 is from a photograph of a plant obtained by Dr. Rose through W. Mundt in 

 1913, which is now growing at Washington. 



81. Neomanunillaria pitimosa (Weber). 



Mammillaria plumosa Weber, Diet. Hort. Bois 804. 1898. 



Small, growing in dense clusters sometimes 15 cm. broad, entirely covered by the mass of white 

 spines; tubercles small, somewhat woolly in their axils, 2 to 3 mm. long; spines about 40, all radial, 

 weak, plumose, 3 to 7 mm. long; flowers white, small, 3 to 4 mm. long; perianth-segments with a red 

 Hne running down the center; seeds black. 



