NEOMAMMIIvLARIA. 



147 



1905. It differs considerably from Neomammillaria kunzeana, from the same region, in 

 its hair-like radial spines. It is perhaps nearest M. bocasana, but that species has single 

 central spines. 



Illustration: Aim. Rep. Smiths. Inst. 1908: pi. 4, f. 4, as Mammillaria bocasana. 



Figure 162 is from a photograph of a plant (type) collected b}^ Dr. E. Palmer near San 

 Luis Potosi in 1905 and figure 165 shows a cluster of plants from the same colony. 



118. Neomammillaria bocasana (Poselger). 



Mammillaria bocasana Poselger, Allg. Gartenz. 2i: 94. 1853. 

 Cactus bocasanus Coulter, Contr. U. S. Nat. Herb. 3: 104. 1894. 



Cespitose, often forming large mounds; individual plants globose, 3 to 4 cm. in diameter, light 

 green; tubercles slender, 6 to 8 mm. long, terete, their axils sometimes hairy or bristly; radial 

 spines represented by numerous long white silky hairs; central spines solitary, 5 to 8 mm. long, 

 brown, but paler at base, hooked, much shorter than the radial hairy ones; flower-buds rose- 

 colored; flowers described as white; perianth-segments lanceolate-linear, acute, spreading; fruit 

 ''green, 4 mm. long; seeds cinnamon brown, oblique, broadly obovate, with narrowly basal hilum." 



Fig. 162.— N 



Neomammillaria bocasana. 



Type locality: Sierra de Bocas,* Mexico. 



Distribution: Northern central Mexico, especially in San Luis Potosi. 



This species has not been well understood and is usually misnamed in collections. 



The two varieties of Mamillaria bocasana, cristata and glochidiata, are listed by Schelle 

 (Handb. Kakteenk. 250. 1907), but not described. The former is offered for sale by 

 Grassner in his Kakteen for 19 14. We do not find that M. bocasana splendens Liebner and 

 M. bocasana sericata Lemaire, mentioned by Quehl (Monatsschr. Kakteenk. 19: 46. 1909), 

 have ever been described. 



Mammillaria schelhasei lanuginosior Hildmann (Schumann, Gesamtb. Kakteen 531. 

 1898) we have not seen but it may belong here. 



Mammillaria bocasana splendens, credited to Schlechtendal, is offered for sale by 

 Haage and Schmidt in their 1922 Catalogue. 



Illustrations: Schelle, Handb. Kakteenk. 250. f. 170; Blanc, Cacti 67, No. 1148; 

 West Amer. Sci. 13 : 40 (these three illustrations are from the same source) ; Bliihende 

 Kakteen i: pi. 35; Monatsschr. Kakteenk. 31: 103; Schumann, Gesamtb. Kakteen f. 89, 

 as Mammillaria bocasana; De Laet, Cat. Gen. 28. f. 42 ; Schelle, Handb. Kakteenk. 251. f. 



* Coulter (Contr. U. S. Nat. Herb. 3: 104) states that Poselger says the plant is from Texas "auf der Seira de 

 Bocas," but in the original place of publication he does not give the state. Bocas, however, is in San Luis Potosi. 



