NEOMAMMILLARIA. 93 



Mammillaria maschalacatUha xantotricha Monville in Labouret, Monogr. Cact. io6. 1853. 



Cactus funckii Kuntze, Rev. Gen. PI. i: 260. 1891. 



Cactus maschalacanlhus Kuntze, Rev. Gen. PI. i: 260. i8gi. 



Cactus leucotrichus Kuntze, Rev. Gen. PL i: 261. 1891. 



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



Cactus mystax Kuntze, Rev. Gen. PL i: 261. 1891. 



Cactus xanthotrichiis Kuntze, Rev. Gen. PL i: 261. 1891. 



Globose to short-cylindric, 7 to 15 cm. high, flat-topped; tubercles in as many as 34 rows, thickly 

 set, full of milk which freely flows when pricked or cut; radial spines 8 to 10, small, white; central 

 spines 4, 3 about twice as long as the radial ones, the other much elongated, 6 to 7 cm. long; flowers 

 1.5 to 2 cm. long, appearing in 2 or 3 rows, very abundant; inner perianth-segments dark red, 12 mm. 

 long; stigma-lobes 4 or 5, greenish; fruit red, 2 to 2.5 cm. long. 



Type locality: Mexico. According to Hemsley, Karwinsky's plant, which is the type, 

 came from Ixmiquilpan and San Pedro Nolasco at about 6,000 feet altitude. 



Distribution: Highlands of southern central Mexico. 



This species is characterized by the long, erect, central spines which overtop the plant 

 in the wild state ; in cultivation these elongated spines do not always occur. The species is 

 common in cultivation; in collections it is usually known as Mammillaria mutabilis. 



Fig. 89. — Neomammillaria mystax. 



90. — Neomammillaria petterssonii. 



Mammillaria krauseana, a name from Gruson's Catalogue, is cited by Schumann 

 (Gesamtb. Kakteen 595. 1898) as a synonym of M. mutabilis. 



Mammillaria meschalacantha Hortus (Salm-Dyck, Cact. Hort. Dyck. 1844. 10. 1845), 

 according to the Index Kewensis, is a misspelling for M. maschalacantha. 



Mammillaria maschalacantha dolichacantha Monville was given as a doubtful synonym 

 of M. maschalacantha by Labouret (Monogr. Cact. 106. 1853). 



Mammillaria mutabilis autumnalis (Monatsschr. Kakteenk. 30: February 1920) is 

 offered for sale by Grassner. 



Mammillaria mutabilis laevior Salm-Dyck (Cact. Hort. Dyck. 1849. 17, 120. 1850), 

 with M. leucocarpa Scheidweiler as a synonym, was given as a variety of M. mutabilis, but 

 it was not described. M. xanthotricha laevior Salm-Dyck (Cact. Hort. Dyck. 1844. 11. 

 1845), also undescribed, seems to be the same. 



