The Cactus’s Doppelgänger: Convergence in the Desert

[riky]

The Cactus’s Doppelgänger: Convergence in the Desert
      

<img alt="" src="You are not allowed to view links. Register or Login" width="270" height="180" align="right" />At least on this side of the pondâ€"Britannica's offices are in Chicagoâ€"mention of the desert is sure to evoke a landscape punctuated by towering, columnar plants armed with rows of spines: cacti. But what of the flora eking out an existence in the arid regions of the other side of the world?
         

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