CACTACEA. 7 505 
80. Mamillaria breviseta, Ehrb. in Otto & Dietr. Allg. Gartz. xvii. p. 251. 
MEXxIco. 
31. Mamillaria cespititia, DC. Rev. Cact. p. 112. 
Mamillaria nitida, Scheidw. ex Salm Dyck Cact. pp. 10 et 90. 
Mamillaria crebrispina, var. 8. nitida, Monv. Cat., ex Labour. Cact. p. 75. 
Mexico, without locality (Coulter), Mineral del Monte and Oaxaca, at an altitude of 
7000 feet (ex Forster). 
32. Mamillaria carnea, Zucc. in Pfeiff. Enum. p. 19. 
Soutn Mexico, Ismiquilpan (ex Pfeiffer), Oaxaca (ex Ehrenberg). 
33. Mamillaria castaneoides, Lem. Hort. Univ., ex Labour. Cact. p. 37. 
Mamillaria wegenerii, Ehrb. in Bot. Zeit. i. p. 788; Salm Dyck, Cact. ed. 2, p. 84. 
Sourn Muxico, Oaxaca, discovered in 1843 in several varieties (Ehrenberg). 
34, Mamillaria centricirrha, Lem. Cact. Gen. et Spec. Nov. Hort. Monv. p. 42. 
Norra Mexico, San Luis Potosi (ex Ehrenberg). Hort. Kew. 
35. Mamillaria centrispina, Pfeiff. Enum. p. 20. 
Sour Mexico, Oaxaca (Ehrenberg). 
36. Mamillaria cephalophora, Salm Dyck, Cact. ed. 2, p. 137, et in Otto & 
Dietr. Allg. Gartz. 1836, p. 148. 
MEXICco. 
37. Mamillaria ceratocentra, Bergm. in Otto & Dietr. Allg. Gartz. viii. p. 130. 
Mexico, near Alfajayuca (Ehrenberg). 
Labouret (Monogr. Cact. p. 124) refers this to MW. erecta, Lem. 
38. Mamillaria chrysacantha, Hort. Berol., ex Pfeiff. Enum. p. 28; Walp. Rep. 
ii. p. 289. 
Mexico, Mesa de la Magdalena, at 6000 feet, under oaks on vegetable mould above » 
basalt (Ehrenberg). Hort. Kew. 
39. Mamillaria cirrhifera, Mart. in Act. Nov. Nat. Cur. xvi. pt. 1, p. 334; 
Pfeiffer & Otto Abbild. i. t. 7. Hort. Kew. 
SourH Mexico, between Zimapan and Ismiquilpan (Ehrenberg). 
40. Mamillaria clava, Pfeiff. in Otto & Dietr. Allg. Gartz. vill. p. 282; Walp. 
Rep. ii. p. 295; Bot. Mag. t. 4358. 
Mexico, at Almolon, 5000 feet (Ehrenberg). 
41. Mamillaria compacta, Engelm. in Wisliz. Rep. p. 21. 
NortH Mexico, Cosiquiriachi, west of Chihuahua (Wislizenus). 
42, Mamillaria compressa, DC. Rev. Cact. p. 112. 
 Mamillaria angularis, Hort. Berol. ex Pfeiff. Enum. p. 12. 
Soura Mexico, Zimapan and Ismiquilpan (Ehrenberg, Coulter). Hort. Kew. 
BIOL. CENT.-AMER., Bot. Vol. 1, August 1880. 3¢ 
