[Taxacom] barcode of life

dipteryx at freeler.nl dipteryx at freeler.nl
Mon Jul 19 12:27:01 CDT 2010


Van: taxacom-bounces at mailman.nhm.ku.edu namens Steve Manning
Verzonden: ma 19-7-2010 18:10

> when I briefly considered synonymizing the Chinese and 
> American Catalpa species when evidence was published 
> that they were spontaneously and unintentionally 
> producing hybrids in a nursery where both were kept 
> for sale as ornamentals/shade trees, even though 
> in nature they are clearly morphologically distinguishable 
> as well as geographically isolated from each other.

***
It looks to me that it would be surprising if they did not
hybridize freely. They are geographically isolated, so why
should they have invested in developing an (additional)
reproductive barrier?

Paul



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