\ 
\ 
Type locality: Not cited, but Riimpler states that the plant was collected by Galeotti 
near Mineral del Monte, Hidalgo, in 1836. \ 
Distribution: Mexico, perhaps Hidalgo, but definite range unknown. 
Aulacothele sulcolanatum Monville (Lemaire, Icon. Cact. pl. 10. 1841-1847), referred 
here as ‘a synonym, seems never to have been published. 
Mammillaria retusa Scheidweiler is sometimes referred here also and the name has 
priority over M. sulcolanata, but we are treating it as distinct. 
Echinocactus conimamma Linke was cited by Schumann (Monatsschr. Kakteenk. 5: 
75. 1895) by mistake for Mammillaria conimamma Linke. M. conimamma major is listed 
by Haage (Cact. Kultur ed. 2. 179. 1900). 
The name Mammillaria sulcolanata macracantha (Walpers, Repert. Bot. 2: 273. 1843) 
was without description. 
Illustrations: Haage, Cact. Kultur ed. 2. 178, as Mammillaria bumamma; Blanc, 
Hints on Cacti 68. No. 1224, as Mammillaria elephantidens ; Lemaire, Icon. Cact. pl. 10; 
Forster, Handb. Cact. ed. 2. 408. f. 45; Schelle, Handb. Kakteenk. 238. f. 154; Watson, 
Cact. Cult. 178. f. 72; ed. 3. f. 49; Deutsche Gart. Zeit. 6: 65; Dict. Gard. Nicholson 4: 
565. f. 40; Suppl. 518. f. 558, as Mammillaria sulcolanata; Méllers Deutsche GArt. Zeit. 
25: 475. f. 8, No. 2, as Mammillaria conimamma; Lemaire, Cactées 35. f. 2. 
Figure 35 is from a photograph of the plant collected by Dr. Rose near Pachuca in 1905. 
38 THE CACTACEAE. 
Fic. 36.—Coryphantha retusa. 
Fic. 37.—Coryphantha salm-dyckiana. 
7 22. Coryphantha retusa (Pfeiffer). 
Mammiilaria retusa Pfeiffer, Allg. Gartenz. 5: 36 18 
Cactus retusus Kuntze, Rev. Gen. Pl. 1: cér 7 Bor. $7 
Plants depressed-globose, 5 to 10 cm. in diameter, th 
, eae te , : . , the top very woolly; tubercles rather large; 
areoies elliptic; spines 6 to 12, all radial, appressed, or even curved backward. yellowish to brownish, 
subulate, except 2 or 3 acicular ones at upper part of areoles; flowers central, yellow, about 3 cm. 
long; inner perianth-segments oblong, acute. 
Type locality: Mexico. 
Distribution: Oaxaca, Mexico. 
We have referred to this s 
Ve pecies a plant common in Oaxaca, which a igi 
description very well. nd by Conguttl in 
It was collected by Pringle in 1894 (No. 5706) and by Conzatti in 
~~ 
