CACTACEZ. 511 
95. Mamillaria goodrichii, Scheer, ex Salm Dyck, Cact. ed. 2, p. 91; Labour. 
Cact. p. 32. 
Mamiillaria benekei, Ehrb. in Bot. Zeit. ii. p. 883?, ex Salm Dyck, Cact. ed. 2, p. 91. 
CALIFORNIA.—MEXIco. 
96. Mamillaria grahami, Engelm. Cact. U.S. et Mex. Bound. Surv. p. 7, t. 6. 
figs. 1-8. 
New Mexico.—Norta-west Mexico (Parry, Schott, Bigelow). 
97. Mamillaria gracilis, Pfeiff. in Otto & Dietr. Allg. Gartz. vi. p. 275. 
Sovran Mexico, Puente de Dios, 5300 feet, all the barrancas of Mestitlan and 
Zimapan (Ehrenberg). Hort. Kew. 
98. Mamillaria grandicornis, Mihlpf. in Otto & Dietr. Allg. Gartz. xiv. p. 372. 
Mexico. 
99. Mamillaria grandiflora, Otto in Pfeiff. Enum. p. 33. 
Mexico. Hort. Kew. 
Perhaps the same as U/. conoidea, DC. 
99*, Mamillaria granulata, Meinsh. in Koch’s Wochenschr. i. p. 264. 
Mexico (Karwinski). 
100. Mamillaria grisea, Salm Dyck, Cact. ed. 2, p. 110. 
MEXICO. 
101. Mamillaria gummifera, Engelm. in Bost. Journ. Nat. Hist. vi. p. 21. 
Norra Mexico, Cosiquiriachi (Wislizenus). 
102. Mamillaria haageana, Pfeiff. in Otto & Dietr. Allg. Gartz. 1836, p. 257, 
et Enum. p. 26. 
Mamillaria perote, Hortul., ex Pfeiff. loc. cit. 
Mexico, Perote (ex Pfeiffer). 
103. Mamillaria hematactina, Ehrb. in Otto & Dietr. Allg. Gartz. xvi. 
p. 266; Walp. Ann. ii. p. 673. 
MExIco. 
104. Mamillaria hamata, Lehm. Delect. Sem. Hort. Hamb. 1832; Pfeiff. 
Enum. p. 34. 
Mexico. 
105. Mamillaria heinei, Ehrb. in Bot. Zeit. ii. p. 833. 
MEXICO. 
106. Mamillaria helicteres, DC. Rev. Cact. p. 31, t. 9. 
Mexico (Mogino). 
107. Mamillaria heteromorpha, Scheer in Seem. Bot. Voy. ‘ Herald,’ p. 289. 
Norra Mexico, near Chihuahua (Potts). 
