NEOMAMMILI.ARIA. 



141 



axils of old tubercles ; inner perianth-segments lanceolate, acute ; filaments half length of perianth- 

 segments, white; stigma-lobes 4, yellowish; fruit slender, clavate, probably red; seeds minute, 

 brown. 



Type locality: Mexico. 



Distribution: Mexico, but range not known. 



Schumann referred both Cactus cylindricus and Mammillaria hamata to M. coronaria, 

 but the last name must be excluded from this genus. The specific name, cylindricus, 

 which has been used four times in the genus Cactus, can not be transferred to Neomam- 

 niillaria on account of the earlier use of this specific name by Lamarck. 



Mammillaria hamata was first mentioned in the Seed Catalogue of the Hamburg 

 Garden in 1832. 



Fig. 154. — Neomammillaria hamata. 



Fig. 155. — Neomammillaria wildii. 



The following are usually referred as sjoionyms of Mammillaria coronaria, but probably 

 belong here : Mammillaria hamata brevispina and M. hamata principis Salm-Dyck (Labouret, 

 Monogr. Cact. 34. 1853) and M. hamata longispina Salm-Dyck (Cact. Hort. Dyck. 1844. 8. 

 1845). Mammillaria principis Monville (Labouret, Monogr. Cact. 34. 1853) was given 

 as a synonym of the last variety here cited. 



Illustration: Ortega, Nov. Rar. PI. pi. 16, as Cactus cylindricus. 



Figure 154 is reproduced from the illustration above cited. 



107. Neomammillaria rekoi sp. nov. 



Globular to short-cylindric, becoming 12 cm. long, 5 to 6 cm. in diameter, sometimes milky; 

 tubercles green, terete, 8 to 10 mm. long, not very closely set, each bearing in its axil a tuft of short 

 white wool and i to 8 long white bristles ; radial spines spreading, about 20, white, delicately acicular, 

 4 to 6 mm. long; central spines 4, brown, much stouter than the radials, 10 to 15 mm. long, the 



