BRITTON AND ROSE, VOL. III 
PLATE Xxill 
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M. E, Eaton del. Flowering plant of Hickenta microsperma. | Meen &Co 
Flowering plant of A/a/acocarpus ottonis. 
Fruit of Sclerocactus polyancistrus. 
Seed of same. 
Flowering plant of Achinofossulocactus violacifiorus. 
(All natural size, except seed.) : 
bw 
