Taxacom: Question to botanical experts RE ICNafp Code - rank changes for descriptive names, with changed termination
Paul van Rijckevorsel
dipteryx at freeler.nl
Thu Mar 30 05:06:09 CDT 2023
Well, that interpretation would be a personal choice
(very likely not unique). As you say, for automatically
typified names the ending -/phyta/ does indicate a rank.
But outside that context this is just a word element that
can be used in a plural noun. "Phytum" is a noun by itself.
On the other hand, the ending -/idae/ by itself does not
mean anything; it is an ending to turn a word into a
plural adjective, which in turn is meaningful only when
used together with the (implied) noun "plantae". So, for
just about everybody the ending -/idae/ is used in only one
instance (in only one meaning, denoting a rank). It is
fairly heavily implied that if it is used, even for a
not-automatically typified name, that it is intended to
denote rank.
It is a matter of perspective: when I see an ending -/phyta/
I am not assuming any rank, just like when I see the name
/Magnoliophyta/ I am not assuming that I have any idea
what kind of group is intended (one author's circumscription
of a /Magnoliophyta/ can differ by orders of magnitude from
another author's use of that name).
Paul
//
On 30-Mar-23 10:21, Tony Rees wrote:
> Thanks, Paul for your thoughts. I would, however take slight issue
> with your third sentence; for typified names, -phyta does signify that
> rank = Division (=Phylum), even if literally it just means "plants",
> thus in the Code:
>
> /16.3./ Automatically typified names end as follows: the name of a
> division or phylum ends in /‑//phyta,/ unless it is referable to the
> fungi in which case it ends in /‑//mycota;/ the name of a subdivision
> or subphylum ends in /‑//phytina,/ unless it is referable to the fungi
> in which case it ends in /‑//mycotina;/ the name of a class in the
> algae ends in /‑//phyceae,/ and of a subclass in /‑//phycidae;/ the
> name of a class in the fungi ends in /‑//mycetes,/ and of a subclass
> in /‑//mycetidae;/ the name of a class in the plants ends in
> /‑//opsida,/ and of a subclass in /‑//idae/ (but not /‑//viridae/).
> Automatically typified names with a termination not in accordance with
> this rule or Art. 17.1
> <https://nam10.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.iapt-taxon.org%2Fnomen%2Fpages%2Fmain%2Fart_17.html%23Art17.1&data=05%7C01%7Ctaxacom%40lists.ku.edu%7C1eaf5aaf958f40b5a43b08db31066529%7C3c176536afe643f5b96636feabbe3c1a%7C0%7C0%7C638157675776989390%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=1gBuu2D4jLQkHU3WBUKIsXdybELNSiQmWNLYI309GJg%3D&reserved=0> are
> to be corrected, without change of authorship or date of publication
> (see Art. 32.2
> <https://nam10.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.iapt-taxon.org%2Fnomen%2Fpages%2Fmain%2Fart_32.html%23Art32.2&data=05%7C01%7Ctaxacom%40lists.ku.edu%7C1eaf5aaf958f40b5a43b08db31066529%7C3c176536afe643f5b96636feabbe3c1a%7C0%7C0%7C638157675776989390%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=ZdsSZlQrmz9UYZ1kJ96P0wcVfhoc4NwEtdsmhDeXiLE%3D&reserved=0>).
>
> So, using the same as an implied rank indication for descriptive names
> is at least consistent, as well as per user expectations...
>
> Tony Rees, New South Wales, Australia
> https://nam10.safelinks.protection.outlook.com/?url=https%3A%2F%2Fabout.me%2FTonyRees&data=05%7C01%7Ctaxacom%40lists.ku.edu%7C1eaf5aaf958f40b5a43b08db31066529%7C3c176536afe643f5b96636feabbe3c1a%7C0%7C0%7C638157675776989390%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=0iyYnOEC0WKb6rMa4N7JxWOgb5t%2BpkQukc9vITJYbJE%3D&reserved=0
>
>
> On Thu, 30 Mar 2023 at 19:10, Paul van Rijckevorsel via Taxacom
> <taxacom at lists.ku.edu> wrote:
>
> The /ICNafp/ makes no distinction between descriptive
> names with an ending that implies a rank and names
> without such an ending.
>
> It seems likely that authors do. So/Eophytidae/ Edwards,
> Morris, Axe, Duckett, Pressel&Kenrick (2021) can be
> used (unaltered in spelling and with that exact authorship)
> in any rank above that of family, but it seems unlikely
> that this will be popular (presumably somebody looking
> for a name at the rank of class may well be inclined to
> publish a new name /Eophytopsida/).
>
> A name like /Chlorophyta/ is just a Latin word (originating
> in Greek) for "green plants" and it would be a personal
> choice to say that the -/phyta/ implies a rank.
>
> Or to put it differently, if the authors of/Eophytidae/
> intended to publish a name that could easily be used
> generally, in any rank, they would have done better to
> publish a name in the form of /Eophyta/, or /Eospermae/,
> etc.
>
> There probably should be a Recommendation against
> publishing descriptive names with endings that imply a
> rank.
>
> Paul
>
> On 30-Mar-23 04:27, Tony Rees via Taxacom wrote:
> > Thanks Richard... however as I see it, there is a distinction, not
> > commented upon in the Code, between descriptive names that do
> not carry any
> > rank connotation - such as "Angiospermae" - and those that do,
> such as
> > "Chlorophyta" - the latter used almost exclusively to denote a
> Division
> > (Phylum), while at class level it is Chlorophyceae. I would
> contend that
> > "Eophytidae" carries the implied rak of subclass, as explained
> by the
> > authors who created the name, and that it would be perfectly
> reasonable -
> > in fact to be expected - for the termination to be changed if it
> were
> > re-used at another rank...
> >
> > After all, the Code says that descriptive names " _may_ be used
> unchanged
> > at different ranks", not " _must_ be used..." (my emphasis).
> >
> > Regards - Tony
> >
> >
> > On Thu, 30 Mar 2023 at 12:34, Richard Rabeler<rabeler at umich.edu>
> wrote:
> >
> >> Dear Tony:
> >>
> >> An interesting question to which I will offer an observation.
> >>
> >> From my reading of your explanation and the relevant Code
> sections, it
> >> looks like a descriptive name is not subject to following the
> terminations
> >> for ranks above family. Those endings are noted in Sect. 16.3
> which begins:
> >>
> >> *16.3.* Automatically typified names end as follows:
> >>
> >> That may explain the statements noting that descriptive names
> "may be
> >> used unchanged at different ranks"; they are not subject to
> standard
> >> terminations.
> >>
> >> Sincerely,
> >>
> >> Rich Rabeler, MICH
> >>
> >> On Wed, Mar 29, 2023 at 6:01 PM Tony Rees via Taxacom <
> >> taxacom at lists.ku.edu> wrote:
> >>
> >>> Dear all,
> >>>
> >>> I am seeking advice as to how a descriptive name above the
> rank of family
> >>> can be re-used, with a change in termination (to signify
> changed rank)
> >>> with
> >>> or without a change in cited authorship and/or "stat. nov." -
> the latter
> >>> presumably requiring a formal publication.
> >>>
> >>> The name in question is Eophytidae Edwards, Morris, Axe,
> Duckett, Pressel
> >>> &
> >>> Kenrick, 2021, erected as a subclass within class Embryopsida,
> consistent
> >>> with the treatment of land plants by Chase & Reveal, 2009,
> except that
> >>> "Embryopsida" replaces the latter's "Equisetopsida".
> >>>
> >>> This name is erected at a similar rank to bryophytes,
> marchantiophytes
> >>> atc.
> >>> which are at equivalent rank i.e. subclass in the Chase & Reveal
> >>> treatment.
> >>> However in other treatments such as that of Ruggiero et al., 2015,
> >>> followed
> >>> in my own IRMNG system and elsewhere, bryyophytes, etc. are
> treated as
> >>> separate phyla within Embryophyta, which is represented as a
> superphylum.
> >>>
> >>> So my requirement is to treat the "eophytes" (presently
> Eophytidae) as a
> >>> separate phylum, e.g. "Eophyta", where it will sit alongside
> >>> Anthocerotophyta, Bryophyta, Charophyta and so on. Note here,
> "Eophytidae"
> >>> is a "descriptive name" per the ICNafp (not based on a genus)
> so falls
> >>> under the provisions of Arts. 16 and 6.10, thus:
> >>> -------------
> >>> Article 16.1 Names above the rank of family
> >>> "… descriptive names … may be used unchanged at different ranks"
> >>> -------------
> >>> Article 6.10 Note 3
> >>> Note 3. A descriptive name (Art. 16.1(b)) used at a rank
> different from
> >>> that at which it was first validly published is not a name at
> new rank
> >>> because descriptive names may be used unchanged at different
> ranks.
> >>> -------------
> >>> So one reading of this is that Eophytidae may be recast as
> "Eophyta" (with
> >>> the same circumscription) without a change of authorship, and not
> >>> requiring
> >>> a published "stat. nov.". However the alternative reading
> would be that a
> >>> published change of authorship would be needed, plus a "stat.
> nov.", since
> >>> although the initial portion of the name is unchanged, the
> termination is
> >>> -
> >>> in other words the name is not "unchanged" in the sense of
> Art. 16.1.
> >>>
> >>> Thoughts, advice appreciated.
> >>>
> >>> Tony Rees, New South Wales, Australia
> >>>
> >>>
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