108 THE CACTACEAE. 
which have passed as M. elegans have recently been described as Mammillaria pseudo- 
perbella and M. perbella. 
Mammillaria supertexta caespitosa Monville (Salm-Dyck, Cact. Hort. Dyck. 1844. 6. 
1845) is only a name; M. supertexta compacta Scheidweiler (Labouret, Monogr. Cact. 61. 
1853) was given as a synonym of M. supertexta tetracantha but may not belong here. 
The name Mammillaria leucocephala Hortus is given by Pfeiffer as a synonym of M. 
acanthophlegma. M. recta Miquel (Labouret, Monogr. Cact. 63. 1853) occurs only as a 
synonym for the same species. 
Illustrations: Blithende Kakteen 3: pl. 139; Cact. Journ. 1: pl. for February; Schelle, 
Handb. Kakteenk. 261. f. 183; Schumann, Gesamtb. Kakteen 564. f. 92, as Mammil- 
laria elegans; Mém. Mus. Hist. Nat. Paris 17: pl. 3, as Mammillaria gemintspina; Cact. 
Journ. 1: pl. for February in part, as Mammillaria supertexta; Méllers Deutsche Gart. 
Zeit. 25: 475. f. 8, No. 24, as Mammillaria dyckiana. 
Fic. 108.—Neomammiillaria tetracantha. Fic. 109.—Neomammiillaria elegans. 
Figure 109 is from a photograph of the plant grown in the Huntington Collection near 
Los Angeles, California, as this species. 
Of this relationship are the following : 
MAMMILLARIA CONSPICUA J. A. Purpus, Monatsschr. Kakteenk. 22: 163. I912. 
Simple, cylindric to globose, not milky; spine-areoles small, short-elliptic, when young a little 
woolly, in age glabrate; radial spines 10 to 25, rigid; central spines 2, a little curved; fruit red; seeds 
I mm. long. 
Type locality: Near Zapotitlan, Puebla, Mexico. 
Illustration: Monatsschr. Kakteenk. 24: 37. 
MAMMILLARIA MICROTHELE Miithlenpfordt, Allg. Gartenz. 16: 11. 1848, 
Cactus bispinus Coulter, Contr. U. S. Nat. Herb. 3: 101. 1894. 
Cespitose, many-headed ; joints globose, small; tubercles when dry 6 mm. long, naked or woolly 
in their axils; radial spines 22 to 24, white-setiform, spreading, 2 to 4 mm. long; central spines 2, 
much stouter than the radials, 2 mm. long or less; flowers flesh-colored without, white within, small, 
only 3 to 4 mm. long when dried: fruit clavate, 10 mm. long; seeds rather large, probably black. 
Type locality: Not known but supposed to be Mexico. 
Distribution: Mexico. 
