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Date: Sun, 19 Sep 2004 15:43:41 -0400
From: [unknown]
To: phylocode@ouvaxa.cats.ohiou.edu
Subject: Fwd: Re: Fwd: Re: Fwd: Re: Fwd: PROPOSED ARTICLE X - autonym=
> > Louis Chinnery asked: >> >> >There are competing names, e.g. the typified Magnoliophyta. Coul= d the >> >existing typified names be used for one class of clade providing= that the >> >name is not currently being applied to a polyphyletic group? >> >> Magnoliophyta could be defined as applying to the panstem, but th= is >> would likely confuse people because Magnoliophyta and Angiosperma= e >> are widely understood by botanists to be alternative names for th= e >> same clade. The same applies to other pairs of typified versus >> untypified names (e.g., Equisetophyta and Sphenophyta, Pinophyta = and >> Coniferophyta, Lamiaceae and Labiatae). > Michael Keesey wrote: >This isn't my domain, as such, but couldn't the typified names, name= d after >genera, be crowns, while the untypified names, which seem to all be= =20 >named after >characters, be apomorphy-based? > Sure this could be done, but I would not want to reserve all of the= =20 untypified names for apomorphy-based clades for two reasons: 1) The= =20 untypified name is, in some cases, the most widely used one (e.g.,= =20 Angiospermae), and I support the premise that the most widely used= =20 name should be assigned to the crown. 2) Some apomorphies that are= =20 referred to in untypified names may be sufficiently difficult to=20 describe unambiguously that it would be better not to define a name= =20 based on that apomorphy. Furthermore, many people would prefer not= =20 to use apomorphy-based definitions at all (though I do not share this= =20 view); people who hold this view would not be able to define=20 untypified names if there were a convention to reserve these for=20 apomorphy-based clades. Phil --=20 Philip D. Cantino Professor and Associate Chair Department of Environmental and Plant Biology Ohio University Athens, OH 45701-2979 U.S.A. Phone: (740) 593-1128; 593-1126 Fax: (740) 593-1130 e-mail: cantino@ohio.edu