NEOMAMMILLARIA. I4I 
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- 
millaria 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. 
Fic. 155.—Neomammillaria wildii. 
Fic. 154.—Neomammnillaria hamata. 
The following are usually referred as synonyms of M ammillaria 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. pl. 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, sree ky 
tubercles green, terete, 8 to 10 mm. long, not very closely set, each bearing in its del _ ors far 
white wool and 1 to 8 long white bristles; radial spines spreading, about 20, white, delicate re the 
4 to 6 mm. long; central spines 4, brown, much stouter than the radials, 10 to 15 mm. long, 
