[Taxacom] Plant names

[Alan Franck]

Hi Joey,

As I understand it, Reynoutria is the generally accepted genus from recent literature. From a global perspective, Plants of the World Online is quite helpful and often up-to-date. For identification characters, FNA is a good resource, but the Polygonaceae treatment was published in 2005 when Fallopia was thought an appropriate genus for knotweed: http://beta.floranorthamerica.org/Fallopia

I would advise against using Polygonum cuspidatum, as listed by the USDA, since that reflects an old concept of Polygonum s.lat. I am not aware of any recent debate concerning the use of Reynoutria.

Kind regards,
 
Alan
-- 

Alan R. Franck, Ph.D.
Curator, Wertheim Conservatory
Institute of Environment
Dept. Biological Sciences, OE 167
Florida International University
11200 SW 8th St., Miami, FL 33199
 

On 2/9/21, 11:04 PM, "Taxacom on behalf of Joey Slowik via Taxacom" <taxacom-bounces at mailman.nhm.ku.edu on behalf of taxacom at mailman.nhm.ku.edu> wrote:

    Note: This message originated from outside the FIU Faculty/Staff email system.


    So this may be a simple question. I'm helping with a Knotweed EA and
    have realized that the recent publications all use a different name
    than the USDA. The USDA plants database, which is what we are told to
    use for reference, seems outdated, like 10+ years. And for some names
    there seems to be no justification but historical use. Is there a
    reason for this? I usually work with spiders and there is a general
    consensus on accepted names from the World Spider Catalog. But is
    there debate in the plant naming world? Is it ok to use old names?

    Thanks

    Jozef Slowik
    UAF Cooperative Extension Service
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