[Taxacom] Order Campanulales (worth maintaining?)

[John Grehan]

Whether one wants two groups or one may be less important (or maybe
interesting) than what criteria are presented for each choice.

John Grehan

-----Original Message-----
From: taxacom-bounces at mailman.nhm.ku.edu
[mailto:taxacom-bounces at mailman.nhm.ku.edu] On Behalf Of Richard Jensen
Sent: Wednesday, February 16, 2011 12:25 PM
To: taxacom at mailman.nhm.ku.edu
Subject: Re: [Taxacom] Order Campanulales (worth maintaining?)

I guess if the Association of Professional Genealogists, in their 3rd 
(sorry for the mistaken reference to their second) version, have 
declared these to be a single order, then so be it.  ;-)

Given the cladogram on which the classification is based, I understand 
Ken's point.  Whether we treat these putatively monophyletic groups as 
one order or two would seem to be a matter of preference, not evidence.

There is no rule I am aware of for deciding if the two groups in 
question are treated as two suborders or as orders.

Dick J

On 2/16/2011 10:12 AM, Kenneth Kinman wrote:
> Dear All,
>        It is not a matter of evidence in this case.  The present
evidence
> seems to show that Order Campanulales (families Campanulaceae and
> Rousseaceae) is sister group to my more traditional Order Asterales,
and
> this is how I coded it in my 2009 classification.
>        However, one could also treat them as sister Suborders rather
than
> sister Orders.  This would yield one very large Order Asterales (as
APG
> started doing in its second version).   The evidence is the same
either
> way, so it is just a matter of rank (and whether one doesn't mind
> sinking another Order into synonymy when it isn't really necessary).
> This is a matter of lumping vs. splitting, not evidence.
>              -------------Ken
>
>
> _______________________________________________
>
> Taxacom Mailing List
> Taxacom at mailman.nhm.ku.edu
> http://mailman.nhm.ku.edu/mailman/listinfo/taxacom
>
> The Taxacom archive going back to 1992 may be searched with either of
these methods:
>
> (1) http://taxacom.markmail.org
>
> Or (2) a Google search specified as:
site:mailman.nhm.ku.edu/pipermail/taxacom  your search terms here

-- 
Richard J. Jensen, Professor
Department of Biology
Saint Mary's College
Notre Dame, IN 46556
Tel: 574-284-4674


_______________________________________________

Taxacom Mailing List
Taxacom at mailman.nhm.ku.edu
http://mailman.nhm.ku.edu/mailman/listinfo/taxacom

The Taxacom archive going back to 1992 may be searched with either of
these methods:

(1) http://taxacom.markmail.org

Or (2) a Google search specified as:
site:mailman.nhm.ku.edu/pipermail/taxacom  your search terms here