98 THE CACTACEAE. 
The species is named for Dr. Barton W. Evermann, Director of the Museum of the 
California Academy of Sciences, who organized the scientific expedition to the Gulf of 
California in 1921, which obtained this as well as many other new and rare plants. 
Related to this species, but perhaps distinct from it, is Johnston’s No. 3121 from 
Nolasco Island, Gulf of California. It has fewer spines (about 10 radials and 1 or 2 
centrals). 
Figure 95 is from a photograph of plants from the type collection. 
> 42. Neomammillaria parkinsonii (Ehrenberg). 
* Mammillaria parkinsoniu Ehrenberg, Linnaea 14: 375. 1840. 
Cactus parkinsonit Kuntze, Rev. Gen. Pl. 1: 261. 1891. 
Cespitose, somewhat depressed to cylindric, 15 cm. high, 7.5 cm. in diameter, globose, glaucous, 
green; axils of tubercles lanate and setose; tubercles milky, short, conic; radial spines numerous 
(20 or more), setaceous, short, white; central spines 2 or sometimes 4 or 5, brownish at tip; flowers 
surrounded by a mass of wool, small, yellowish; inner perianth-segments apiculate; stigma-lobes 
elongated; fruit clavate, scarlet, 1 cm. long; seeds brown. 
Type locality: At San Onofre in the Mineral del Doctor, Mexico. 
Distribution: Central Mexico. 
We have a photograph, identified as this plant, sent us by L. Quehl in 1921, and also 
specimens which are like this photograph, collected by Dr. Rose near Higuerillas, Querétaro, 
Mexico, in 1905 (No. 9798). 
The plant was named for John Parkinson, at one time British Consul-General in 
Mexico, who died in Paris, April 3, 1847. : . 
Mammiullaria parkinsonit rubra (Forster, Handb. Cact. 196. 1846) is only a name. 
Mammillaria parkinsoni waltonit we do not know, although it is frequently referred 
to in cactus literature. Haage and Schmidt offer it for sale in their catalogue (1920) under 
the name of M. waltonii Quehl. 
Illustrations: Cact. Journ. 1: pl. for March, as Mammillaria waltonii; Gartenwelt 14: 
232; Mdllers Deutsche Gart. Zeit. 25: 475. f. 8, No. 15; Rother, Praktischer Leitfaden 
Kakteen 39, as M. parkinsonit. 
Figure 94 is from a photograph sent by L. Quehl. 
>43. Neomammillaria geminispina (Haworth). 
Mammillaria geminispina Haworth in Gillies, Phil. Mag. 63: 42. 1824. 
Mammillaria bicolor Lehmann, Samen. Hamb. Gartz. 7. 1830. 
Mammillaria nivea Wendland in Pfeiffer, Enum. Cact. 27. 1837. 
Mammillaria daedalea Scheidweiler, Hort. Belge 4:16. 1837. 
Mammillaria toaldoae Lehmann, Linnaea 12: 13. 1838. 
Mammillaria eburnea Miquel, Linnaea 12: 14. 1838. 
Mammillaria nivea daedalea Lemaire, Cact. Gen. Nov. Sp. tor. 1839. 
Mammillaria nobilis Pfeiffer, Allg. Gartenz. 8: 282. 1840. 
Mammillaria bicolor longispina Salm-Dyck, Cact. Hort. Dyck. 1844.6. 1845. 
2 Mamamillaria bicolor cristata Salm-Dyck, Cact. Hort. Dyck. 1844.6. 1845. 
Mammillaria bicolor nobilis Forster, Handb. Cact. 198. 1846. 
Cactus geminispinus Kuntze, Rev. Gen. Pl. 1: 260. 1891. 
Cactus niveus Kuntze, Rev. Gen. Pl. 1: 261. 1891. 
Cactus nobilis Kuntze, Rev. Gen. Pl. 1: 261. 1891. Not Lamarck, 1783. 
Mammillaria bicolor nivea Schumann, Gesamtb. Kakteen 569. 1898. 
Cespitose, or single in cultivation, cylindric, somewhat glaucous; axils woolly ; tubercles terete, 
conic; radial spines numerous (16 to 20), very short, setaceous, white; central spines 2 to 4, stouter 
and longer than the radials, about 25 mm. long, black-tipped; flowers dark red; inner perianth- 
segments oblong, obtuse, serrate. 
Type locality: Mexico. 
Distribution: North-central Mexico. 
Mammillaria daedalea, which is referred here by Schumann, is based on an abnormal 
specimen which has elongated, contorted stems and looks very unlike the typical plant. 
Scheidweiler illustrated his species. 
