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Aristolochia  s.str.


subgen. Aristolochia

The subgenus Aristolochia is the most diverse of the three main ones and can be further subdivided into the American section


sect. Gymnolobus


and the Afro-Eurasian and Australasian section


sect. Diplolobus


reaching as far as to Australia and several islands in the South Pacific Ocean. 

Hotspots of typical Gymnolobus species can be found in the Mata Atlantica in Espírito Santo, Brazil and presumably in Amazonia, where many species have been described yet but records of unidentifiable and presumably new species continue to appear regularly. 


Other mentionable regions include Hispaniola and Mexico, from where dozens of new species have been recently described and rediscovered.


The only diversity hotspot for Diplolobus  in Europe is located in SW Anatolia, Turkey + adjacent regions.

About 30 species, natural hybrids and quite a number of yet undescribed ones are known.

Other hotspots to be mentioned are Thailand & Vietnam from where more than a dozen species have been described in the past decades.



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