88 THE CACTACEAE. 



29. Neomammillaria poljrthele (Martius). 



Mamniillaria polythele Martius, Nov. Act. Nat. Cur. 16: 328. 1832. 

 Mammillaria quadrispina Martius, Nov. Act. Nat. Cur. 16: 329. 1832. 

 Mammillaria cohimnaris Martius, Nov. Act. Nat. Cur. 16: 330. 1832. 

 Mammillaria affinis De Candolle, Mem. Cact. 11. 1834. 

 Mammillaria setosa Pfeiffer, Allg. Gartenz. 3: 379. 1835. 



Mammillaria polythele quadrispina Salm-Dyck in Walpers, Repert. Bot. 2: 271. 1843. 

 Mammillaria polythele cohimnaris Salm-Dyck in Walpers, Repert. Bot. 2: 271. 1843. 

 Mammillaria polythele setosa Salm-Dyck, Cact. Hort. Dyck. 1844. 9. 1845. 

 Mammillaria polythele hexacantha Salm-Dyck, Cact. Hort. Dyck. 1849. 15. 1850. 

 Mammillaria polythele latimamma Salm-Dyck, Cact. Hort. Dyck. 1849. 112. 1850. 

 Cactus affinis Kuntze, Rev. Gen. PI. i: 260. 1891. 

 Cactus quadrispinus Kuntze, Rev. Gen. PI. i: 261. 1891. 

 Cactus setosus Kuntze, Rev. Gen. PI. i: 261. 1891. 

 Cactus polythele Kuntze, Rev. Gen. PI. i: 261. 1891. 

 ? Mammillaria hidalgensis Purpus, Monatsschr. Kakteenk. 17: 118. 1907. 



Elongated, cylindric, often 3 to 5 dm. high, 7 to 10 cm. in diameter; tubercles milky, in about 

 21 spirals, 10 to 12 mm. long, nearly terete, somewhat narrowed toward apex, dull green; axils of 

 young tubercles densely long-woolly, the wool nearly covering the top of the plant, in age becoming 

 naked; spines 2 to 4, sometimes 6, all radial, somewhat spreading, i to 2.5 cm. long, reddish, straight 

 or a little curved; flowers from near top of plant, reddish, 8 to id mm. long; perianth-segments 

 narrow, acuminate; fruit red, clavate; seeds small, brownish. 



Type locality: Mexico. 



Distribution: State of Hidalgo. 



In 1905 Dr. Rose collected living plants of this species near Ixmiquilpan. It is a 

 rather striking plant, growing very tall and flowering near the top. 



Schumann places this species in the Section Hydrochylus, in which the sap is watery, 

 but Martius in his original description says definitely that it is milky. 



Mammillaria aciculata Otto (Pfeiffer, Enum. Cact. 29. 1837; M. polythele aciculata 

 Salm-Dyck, Cact. Hort. Dyck. 1844. 9. 1845) is referred here by Schumann but should be 

 excluded; it came from the cold regions of Mexico and was described as having 20 white 

 slender radial spines. 



'Mammillaria columnaris minor Martius and M. quadrispina major, mentioned by 

 Forster (Handb. Cact. 214, 215. 1846), probably belong here. 



Mamniillaria cataphracta Martius was given by Pfeiffer (Enum. Cact. 11. 1837) as a 

 synonym of M. affinis and by Salm-Dyck (Hort. Dyck. 155. 1834) as a synonym of M. 

 angularis. 



Illustrations: Nov. Act. Nat. Cur. 16: pi. 19, as Mammillaria polythele; Monatsschr. 

 Kakteenk. 17: 119; Mollers Deutsche Gart. Zeit. 25: 475. f. 8, No. 10, as M. hidalgensis; 

 De Candolle, Mem. Cact. pi. 6, as M. affinis; Abh. Bayer. Akad. Wiss. Miinchen 2: pi. 

 I, I. f. 2, as M. columnaris. 



Figure 80 is from a photograph of a plant collected in the state of Hidalgo in 1905 

 which has heretofore passed as Mammillaria hidalgensis. 



30. Neomammillaria camea (Zuccarini). 



Mammillaria camea Zuccarini in Pfeiffer, Enum. Cact. 19. 1837. 

 Mammillaria subtetragona Dietrich, Allg. Gartenz. 8: 169. 1840. 

 Mammillaria aeruginosa Scheidweiler, Allg. Gartenz. 8: 338. 1840. 

 JlfowiOTiWaria /)aM«jcen5 Scheidweiler, Allg. Gartenz. 9: 42. 1841. 

 Mammillaria villifera camea Salm-Dyck, Cact. Hort. Dyck. 1849. 16. 1850. 

 Mammillaria villif era aeruginosa Salm-Dyck, Cact. Hort. Dyck. 1849. i6. 1850. 

 Mammillaria villifera cirrosa* Salm-Dyck, Cact. Hort. Dyck. 1849. 115. 1850. 

 Cactus aeruginosus Kuntze, Rev. Gen. PI. i: 260. 1891. 

 Cactus carneus Kuntze, Rev. Gen. PI. i: 260. 1891. 

 Cactus pallescens Kuntze, Rev. Gen. PI. i: 261. 1891. 

 Cactus subtetragonus Kuntze, Rev. Gen. PI. i: 261. 1891. 

 Mammillaria camea cirrosa Giirke, Bliihende Kakteen i: under pi. 60. 1905. 

 Mammillaria camea aeruginosa Gtirke, Bliihende Kakteen i : under pi. 60. 1905. 



Plants solitary, cylindric, 8 to 9 cm. high; tubercles 4-angled, milky, their axils woolly, the upper 

 ones erect; spines 4, straight, reddish, the lower one 10 mm. long, twice as long as the other 3 ; flowers 



* Forster (Handb. Cact. ed. 2. 342. 1885) spells this name, cirrhosa. 



