NEOMAMMILLARIA. I7I 



a distinct species. The plant figured by Grassner (Haupt-Verz. Kakteen 38. 1914) shows 

 nearly upright branches. 



Illustration: Monatsschr. Kakteenk. 23: 21, as Mammillaria viperina. 



Mammillaria zeyeriana Haage jr. in Schumann, Gesamtb. Kakteen 574. 1898. 



Simple, hemispheric to short-cylindric, up to 10 cm. high, pale glaucous-green; tubercles in 13 

 or 21 spirals, terete, 10 to 12 mm. long, their axils naked; spine-areoles elliptic, 3 mm. long; radial 

 spines 10, white; central spines 4, the uppermost one curved, 15 mm. long, brownish; flowers and 

 fruit unknown. 



Described from Mexican plants; supposed to be of Mexican origin. 

 PLANTS KNOWN BY NAME ONLY. 



Mammillaria acicularis Lemaire (Cact. Gen. Nov. Sp. 34. 1839) was described without 

 the flowers, fruit, or native country being known and has not been identified ; here belongs 

 Cactus acicularis (Kuntze, Rev. Gen. PI. i: 261. 1891), but C. acicularis (Kuntze, Rev. 

 Gen. PI. i: 260. 1891) based on some name of Lehmann we have not been able to find. 



Mammillaria aulacantha, referred by Schumann and the Index Kewensis to De 

 Candolle's Revision (Mem. Mus. Hist. Nat. Paris 17: 113. 1828), is not to be found at the 

 place cited by them; here probably belongs Cactus aulacanthus Kuntze (Rev. Gen. PI. i : 

 260. 1891). 



Mammillaria beneckei Ehrenberg (Forster, Handb. Cact. 210. 1846; Cactus beneckei 

 Kuntze, Rev. Gen. PI. i : 260. 1891) was referred to M. coronaria by Schumann. 



Mammillaria brandi is described in Blanc, Hints on Cacti, p. 67, as "a rare Mexican 

 sort, with very long straw-colored spines deflecting from the plant. Flowers cream-colored 

 and very fragrant." 



Mammillaria centa is mentioned by C. A. Purpus in a short article in Die Gartenwelt 

 (9: 249. 1905). 



Mammillaria chrysantha is listed by De Candolle (Prodr. 3: 460. 1828) among species 

 little known but not described. It is said to have been in the Berlin Botanic Garden. 



Mammillaria circumtexta Martius (Hort. Reg. Monac. 127. 1829) seems never to have 

 been described. 



Mammillaria hochderjeri is mentioned by C. A. Purpus in a short article in Die Garten- 

 welt (9:249. 1905). 



Mammillaria multiradiata (Martius, Hort. Reg. Monac. 127. 1829) is only a name. 



Mammillaria nigra Ehrenberg (Allg. Gartenz. 17: 287. 1849) was referred to M. 

 coronaria by Schumann; Cactus niger Kuntze (Rev. Gen. PI. i: 261. 1891) is a synonym 

 of it. 



Mammillaria parmentieri Link and Otto (Verh. Ver. Beford. Gartenb. 6: 429. 1830), 

 without description, was doubtfully referred to M. flavescens. It was supposed, however, 

 to have come from Mexico. 



The following species, briefly described by F. Schlumberger (Rev. Hort. IV. 5: 404. 

 1856), we do not know, nor do we find them mentioned elsewhere: 



Mammillaria albiseta, with flowers like those of M. spinosissima. 

 Mammillaria bocasiana, with clear yellow flowers. 

 Mammillaria cunendstiana, with flowers like those of M. clillifera. 

 Mammillaria decholara, with very small red flowers. 

 Mammillaria klenneirii, with rose-colored flowers. 

 Mammillaria roematactina, with abundant small rose-red flowers. 

 Mammillaria saluciana, flowers 1.5 cm. long and of the same diameter, flesh-colored. 

 The following names, without descriptions, appear in Forster's Handbuch (254, 255, 

 1846). Some of the names have been used subsequently, but so far as our observation goes 



