NEOLLOYDIA. 



15 



2. Neolloydia clavata (Scheidweiler) . 



Mammiltaria clavata Scheidweiler, Bull. Acad. Sci. Brux. 5: 494. 1838. 

 Mammillaria stipitala Scheidweiler, Bull. Acad. Sci. Brux. 5: 495. 183S. 

 Mammillaria rhaphidacantha Lemaire, Cact. Gen. Nov. Sp. 34. 1839. 

 Mammillaria ancistracantha Lemaire, Cact. Gen. Nov. Sp. 36. 1839. 

 Mammillaria rhaphidacantha humilior * Salm-Dyck in Forster, Handb. Cact. 244. 



1846. 

 1850. 



Mammillaria scolymoides raphidacantha Salm-Dyck, Cact. Hort. Dyck. 1849. 132. 

 Echinocactus corniferus rhaphidacanthus Poselger, Allg. Gartenz. 21: 102. 1853. 

 ? Mammillaria potosiana Jacobi, Allg. Gartenz. 24: 92. 1856. 

 Mammillaria sulcoglandulifera Jacobi, Allg. Gartenz. 24: 92. 1856. 

 Coryphantha raphidacantha Lemaire, Cactees 34. 1868. 

 Coryphantha ancistracantha Lemaire, Cactees 34. 1868. 

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

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

 Cactus brunneus Coulter, Contr. V. S. Nat. Herb. 3: 117. 1894. 

 Cactus maculatus Coulter, Contr. U. S. Nat. Herb. 3: 117. 1894. 



Mammillaria raphidacantha] ancistracantha Schumann, Gesamtb. Kakteen 506. 1898. 

 Mammillaria radicantissima Quehl, Monatsschr. Kakteenk. 22: 164. 1912. 



Plants simple, elongated, cylindric, 10 to 15 cm. high, dark bluish green; tubercles in rows of 

 5, 8, and 13, conic, grooved above, the axils when young bearing short white wool; glands in the 

 groove I to several, large, red; radial spines 6 to 12, with reddish or black tips; central spine i, some- 

 what longer than radials, curved or even hooked ; flowers small for the genus, about 2 cm. long; outer 

 perianth-segments linear, acute, entire, with broad brownish midrib; inner perianth-segments 

 linear, entire, narrow, creamy white; stamens pinkish, much shorter than the perianth-segments; 

 style pinkish; stigma-lobes 5 or 6, short, greenish. 



Fig. 14. — Neolloydia clavata. 



Fig. 15. — Neolloydia conoidea. 



Type locality: Not cited. 



Distribution: San Luis Potosi, Mexico. 



The two species of Coulter, Cactus brunneus and Cactus maculatus, as well as Mam- 

 millaria radicantissima, came from San Luis Potosi, and all seem to be so much alike that 

 we do not hesitate to reduce them as above. 



Echinocactus raphidacanthus is credited by Schumann to Poselger, but he used the 

 name raphidacanthus only as a variety of E. corniferus. This binomial was used in 1850 

 by Salm-Dyck for a very different plant. 



Mammillaria humilior Forster we have seen only in Schumann's Index (Gesamtb. 

 Kakteen 824. 1898). He refers it to M. raphidacantha ancistracantha. 



* Schumann (Gesamtb. Kakteen 506, 824, Index, 1898), perhaps not intentionally, gives this name specific rank. 

 t Schumann has dropped the first "h" in Mammillaria rhaphidacantha and he is followed by the Monatsschrift 

 fiir Kakteenkunde. 



