. The Cactaceae : descriptions and illustrations of plants of the cactus family. 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
. The Cactaceae : descriptions and illustrations of plants of the cactus family. 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 ;. 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 1914. 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 s
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