NEOMAMMILLARIA. 



153 



Illustrations: Cact. Mex. Bound, pi. 8, f. i to 8; Monatsschr. Kakteenk. 14: 9; 

 Mollers Deutsche Gart. Zeit. 25: 475. f. 8, No. 5 ; West Amer. Sci. 13 : 40; Forster, Handla. 

 Cact. ed. 2. 249. f. 23 (as f. 31, in error); Schelle, Handb. Kakteenk. 255. f. 177; Remark, 

 Kakteenfreund 16, 17, as M. wrightii. 



Figure 171 is a reproduction of the first illustration cited above. 







m\Y 



Fig. 171. — Neomammilla 



vrightii. 



Fig. 172, — NeomammiUaria mainae. 



127. NeomammiUaria viridiflora sp. nov. 



Globular to short-oblong, 5 to lo cm. long, the plant-body well hidden under the closely appressed 

 radial spines; tubercles terete, small, naked in their axils; radial spines 20 to 30, widely spreading, 

 white with brown tip, bristle like, 10 to 12 mm. long; central spines much stouter than the radials, 

 1.5 to 2 cm. long, brown, one or more of them hooked; flowers greenish, narrowly campanulate, 1.5 

 cm. long; fruit globose to ovoid, 10 to 15 mm. long, purplish, very juicy; seeds [minute, i mm. long. 



Collected by C. R. Orcutt on Superior-Miami Highway, near Boundary Monument, 

 between Pinal and Gila counties, Arizona, 4,700 feet elevation, July, 1922 (No. 608, type), 

 and by Mrs. Ruth C. Ross near Tula Spring, south of Aravaipa, Arizona, June 1922 

 (No. 14). 



Here perhaps are to be referred plants collected in New Mexico by O. B. Metcalfe 

 (Nos. 797, 803, and 820) and probably that part of Mammillaria wrightii which came from 

 Santa Rita. Mr. Orcutt has repeatedly written to us about this green-flowered species, 

 which we are now able to separate very distinctly from both M. wrightii and M. wilcoxii. 



Dr. Forrest Shreve has also reported a green-flowered species from Arizona which he 

 states is common in oak-woods. 



128. NeomammiUaria wilcoxii (Toumey). 



Mammillaria wilcoxii Toumey in Schumann, Gesamtb. Kakteen 545. 1898. 



Solitary, almost globose, flabby in texture, 10 cm. in diameter, almost covered by a mass of 

 interlocking spines; axils of tubercles naked; radial spines 14 to 20, widely spreading, often 15 mm. 

 long, bristle-like, white with colored tips; central spines i to 3, brown, 2 cm. long, i or more hooked; 

 flowers pink tp purple, large, 3 cm. long, 4 cm. broad when fully expanded; outer perianth-segments 

 about 20, fringed with white hairs; inner perianth-segments about 40, in 2 rows. 



Type locality: Arizona. 

 Distribution: Southeastern Arizona. 



It should be looked for in northern Sonora. 



