NEOMAMMILLARIA. 85 



23. Neomammillaria gigantea (Hildmann). 



Mammillaria gigantea Hildmann in Schumann, Gesamtb. Kakteen 578. 1898. 



Solitary or cespitose, depressed-globose, 10 cm. high, 15 to 17 cm. in diameter; axils of tubercles 

 lanate; radial spines 12, subulate, white, 3 mm. long; central spines 4 to 6, stout, 2 cm. long, curved, 

 yellowish brown ; flowers yellowish green. 



Type locality: Guanajuato, Mexico. 

 Distribution: Known only from the type locality. 



Mammillaria macdowellii Heese and M. guanajuatensis Riinge are two names referred 

 here by Schumann (Gesamtb. Kakteen 578. 1898), but they were not published. 



Plate XI, figure 3, shows a plant in fruit, collected by Dr. Safford at the type locality. 



24. Neomammillaria peninsularis sp. nov. 



Plants solitary or in clusters, deeply seated in the ground, more or less flat-topped, bluish green, 

 the stems and tubercles very milky; tubercles erect, pointed, 4-angled, pale green; radial spines 4 to 8, 



Fig. 77. — Neomammillaria meiacantha. 



Fig. 78. — Neomammillaria scrippsiana. 



nearly erect, short and pale with brown tips, one sometimes nearly central ; axils of tubercles bearing 

 long wool but in age naked; flowers 1.5 cm. long, arising from old tubercles but near the center; 

 outer perianth-segments narrow, reddish; inner perianth-segments narrow, acuminate, green 

 or light yellow with erose margins; stamens pale; style longer than stamens; stigma-lobes green, 

 linear. 



Collected by Dr. Rose at Cape San Lucas, Lower California, March 23, 191 1 (No. 16377). 



25. Neomammillaria flavovirens (Salm-Dyck). 



Mammillaria flavoviretis Sa.]m-X)yck, Cact. Hort. Dyck. 1849. 117. 1850. 



Either solitary or somewhat cespitose, globose or short-cylindric, 6 to 8 cm. high, light or 

 yellowish green ; tubercles somewhat 4-angled ; axils naked ; radial spines 5, slender, subulate; central 

 spines solitary, porrect; flowers white, streaked with rose. 



Type locality: Not cited. 



Distribution: Mexico. 



The above description is compiled, since the species is not otherwise known to us. 



