84 THE CACTACEAE. 
21. Neomammillaria meiacantha (Engelmann). 
‘© Mammiillaria meiacantha Engelmann, Proc. Amer. Acad. 3: 263. 1856. 
Cactus metacanthus Kuntze, Rev. Gen. Pl. 1: 260. 1891. 
Somewhat depressed, 12 cm. broad or more; tubercles milky, bluish green, more or less angled, 
somewhat flattened dorsally, their axils naked; spines 5 to 9, ascending, pale flesh-colored, the tips 
darker, the lower a little stouter than the upper; central spines porrect, similar to but a little stouter 
than radials and often subradial ; spine-areoles short-woolly at first ; flowers not very abundant, at least 
on cultivated plants; inner perianth-segments white with a pink stripe along inside of midrib, one- 
fourth its width, greenish brown on outside; filaments white; style pink; stigma-lobes yellow; fruit 
scarlet, 22 mm. long; seeds brownish. 
Type locality: Western Texas and New Mexico. 
Distribution: Texas, New Mexico, and northern Mexico. 
According to Dr. Engelmann, this species was first obtained in New Mexico by the 
Missouri Volunteers in 1847 and it has frequently been collected since that time. In 
Mexico it extends as far south as Zacatecas, but develops into some unusual forms. It was 
repeatedly collected in Zacatecas by F. E. Lloyd in 1908. 
Fic. 76.—Neomammillaria ortegae. 
Illustrations: Blithende Kakteen 1: pl. 47*; Blanc, Cacti 71. No. 1 388; Cycl. Amer. 
Hort. Bailey 2: f. 1357; Stand. Cycl. Hort. Bailey 4: f. 2316; West Amer. Sci. 13: 39; 
Schelle, Handb. Kakteenk. 258. f. 190; Cact. Mex. Bound. pl. 9, f. 1 to 3; Cact. Journ. I: 
pl. for October, as Mammillaria meiacantha. 
Figure 77 shows the plant illustrated in the Mexican Boundary Report as cited above. 
22. Neomammillaria scrippsiana sp. nov. 
Globose or becoming short-cylindric, 6 cm. high; tubercles milky, in 26 rows, bluish green, very 
woolly in axils when young; spine-areoles very woolly at first ; radial spines 8 to 10, slender, pale with 
reddish tips; central spines generally 2, a little longer than radials, brown throughout, slightly 
divergent ; flowers borne near top of plant but not in axils of youngest tubercles, about 1 cm. long, 
pinkish, with margins of perianth-segments paler; anthers pinkish; stigma-lobes about 6, recurved, 
cream-colored. 
Collected by Dr. Rose in the barranca of Guadalajara, Jalisco, in September 1903 
(No. 871, type). The plant has flowered repeatedly in Washington since April 1906. 
Specimens were afterward collected near the same place by C. R. Orcutt. It is named in 
honor of E. W. Scripps, the founder of Science Service and The Scripps Institution for 
Biological Research of the University of California. 
Figure 78 is from a photograph of the type specimen. 
* This plate is labeled Mammillaria metonacantha, but described under M. meonacantha. 
