NEOMAMMILLARI A . 



135 



Walpers (Repert. Bot. 2: 272. 1843) records M. intertexta rufocrocea, but without any 

 description. 



Labouret (Monogr. Cact. 67. 1853) records the variety M. stella-aurata minima 

 Salm-Dyck. 



The two varieties of Mammillaria subcrocea, anguinea, and rutila (Walpers, Repert. 

 Bot. 2: 272. 1843) are without descriptions. 



Mammillaria elongata rufescens Salm-Dyck (Cact. Hort. Dyck. 1844. 12. 1845) was 

 not described at the place here cited, while the variety straminea was a garden name 

 (Forster, Handb. Cact. 240. 1846). 



Illustrations: Schumann, Gesamtb. Kakteen 519. f. 85; Bliihende Kakteen 3: pi. 

 174, as Mammillaria elongata ; Schelle, Handb. Kakteenk. 247. f. 165, as M. elongata minima ; 

 Blanc, Cacti 72. No. 1398, as M. minima; Link and Otto, Icon. PI. Rar. pi. 35, as M. 

 densa; Abh. Bayer. Akad. Wiss. Miinchen 2: pi. i. viii. f. 5, as M. stella-aurata] Curtis's 

 Bot. Mag. 65: pi. 3646; Edwards's Bot. Reg. 18: pi. 1523; De Candolle, Mem. Cact. pi. i; 

 Loudon, Encycl. Pi. ed. 2 and 3. 1201. f. 17359, 3-s M- tenuis. 



Figure 146 is from a photograph of the common form in cultivation. 





W:f:.-^i- 







Fig. 147. — Neomammillaria oliviae. 



97. Neomammillaria oliviae (Orcutt). 



Mammillaria oliviae Orcutt, West Amer. Sci. 12: 163. 1902. 



Globose to short-cylindric, up to 10 cm. high, simple or becoming cespitose, sometimes as many 

 as 8 together; tubercles ovoid, their axils naked; radial spines 25 to 36, snowy white or sometimes 

 reddish brown, slender, rigid, 6 mm. long, the upper ones shorter; central spines i to 3, the lower 

 one erect, rigid, white or tipped with chocolate brown ; flowers about 3 cm. broad ; perianth-segments 

 lanceolate, acute, magenta, the upper part of the margins and tip with a narrow band of white; 

 filaments deep magenta; style light pink; stigma-lobes olive-green; fruit scarlet, clavate, up to 2.5 

 cm. long; seeds small, black. 



Type locality: West of Vail, a flag station on the Southern Pacific Railroad, near 

 Tucson, Arizona. 



Distribution: Mountains and deserts of Arizona. 



Our description of the flowers is drawn from the notes and photograph of F. E- 

 Lloyd's specimen sent us from Oro Blanco Mountains, Arizona. This is the only record we 

 have had of this plant blooming, but fruiting plants were collected by C. R. Orcutt in 1922 

 (No. 802). It was first collected in considerable quantity by Mr. Orcutt, but his supply 

 soon died out and most of the skeletons were sent to the U. S. National Herbarium, where 



