2n 
Leuchtenbergia principis 
SHINER CACTUS NURSERY 
Hamatocactus setispinus 
Back row: Cephalocereus hoppenstedtii, Pereskiopsis chapistle, 
Leuchtenbergia principis, Pachycereus marginatus. 
Front row: Echinocereus luteus, Echinocereus knippelianus 
(graft), Thelocactus bicolor var schottii, Coryphan- 
tha cornifera. 
Four members of Echinofossulocactus 
1. E. albatus. 2. E. lancifer. 3. E. heteracanthus. 4. E. multicostatus. 
ECHINOCACTANAE 
Leuchtenbergia principis—Central to Northern Mexico. Very unlike all other cacti. Has 
elongated, angled tubercles; thin papery spines. From inaccessible sections. Rare in collections. 
Seedlings odd miniatures of parent plants. 
Hamatocactus setispinus—S. Texas, North Mexico. Yellow spines, hooked central. Yel¬ 
low flower with red center. Two or more varieties. Good in cultivation. 
Echinofossulocactus—Mexico. Of some 33 or more recognized species. Rather small plants, 
usually depressed globulars. Ribs numerous, in some 50 to 100, thin, wavy. Intricate spine de¬ 
signs make genus most interesting. 
