Convergent Life Histories and Fire-Driven Speciation: Research Brief

Wells  contended that  fire  was the  selective  force behind  the  convergent  evolution  of  the  obligate   seeding  strategy  in  Arctostaphylos and  Ceanothus,   and was  accompanied  by  prolific speciation,  due   in  part  to  a  much  greater  number  of  sexual   generations  for  seeders  than  for  resprouters. 
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Wells, P. V. 1969. The relation between mode of reproduction and extent of speciation in woody genera of the California chaparral. Evolution 23: 264-267.