14: 1M(-. J,m.. l"lx 



I'hc W hiuwjlcr Sands. Miihlciil). 9: l.vM,S9, t. IMS. I'd).. 

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MamiUaria phtlosperma Engelm. Monats. Kakt. 17: 67, 68. 

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28 



