Taxacom: Species described based on a single collection

Wed Feb 22 12:49:49 CST 2023

Nice argument Scott. I follow the DIYD protocol - (damned if you do, damned
if you don't). Apologies to all that don't find that funny. I could not
help myself (and admit my ignorance about the DAMA protocol - I had to look
that up).

John Grehan

On Wed, Feb 22, 2023 at 12:27 PM Scott Monks <monks.scott at gmail.com> wrote:

> John wrote: "I figure better to name such specimens now and let the future
> work out synonymies if they exist."
>
>      I agree completely!  These days, when species are being lost so fast,
> we need to docuent  everything we can.  If specimens turn out just to be
> aberant members of a known species, they are still important as
> contributions to the knowledge about that species.
>      Years ago, my professor answered a similar question of mine with,
> "Don't bother with it!  If the species is extinct, it has no systematic
> value".  I don't know if he really believed that or was just trying to get
> me to defend a point of view--we professors often do that!  However, he was
> strongly against cladistic/phylogenetic studies, so I am sure that he
> didn't consider the usefulness of an extinct species in understanding of
> phylogenetic relationships to be important (or possible!).
>
>      Yes, we need to document everything we can before it disappears, and
> maybe that will even provide a basis for more protection.  (i.e., follow
> the DAMA protocol).
>
> Regards,
> Scott Monks
>
> On Mon, Feb 20, 2023 at 9:43 AM John Grehan via Taxacom <
> taxacom at lists.ku.edu> wrote:
>
>> Interesting question. With respect to "how many known only from the type",
>> one would require knowledge of revisions where a species may have
>> originally been described from a single type, but subsequently known for a
>> multitude of specimens. Of course, naming a new species from a single
>> specimen can often be tricky if the differences are limited. I am guilty
>> of
>> that myself, but in most cases it is likely I would be dead before
>> sufficient duplicate material was available, if ever (or they become
>> extinct). I figure better to name such specimens now and let the future
>> work out synonymies if they exist.
>>
>> John Grehan
>>
>> On Sun, Feb 19, 2023 at 3:53 PM Laurent Gautier via Taxacom <
>> taxacom at lists.ku.edu> wrote:
>>
>> > Dear all,
>> >
>> > We often hear or read: "A huge amount of Amazon plant species are known
>> > only from the type" or "Most XIXth century species descriptions are
>> based
>> > on a single specimen". But has anybody gone any further in metrics?
>> >
>> > I am looking for statistics (published or not) on the percentage of
>> > species descriptions based on a single specimen (or collection), and
>> > possibly its variation across time or geographical area considered.
>> >
>> > Does that ring a bell to anybody? My main focus is on flowering plants,
>> > but all living organisms welcome!
>> >
>> > Thanks in advance,
>> >
>> > Laurent Gautier
>> > Conservatoire et Jardin botaniques, Geneva, Switzerland
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>>
>> Nurturing nuance while assailing ambiguity and admiring alliteration for
>> about 36 years, 1987-2023
>>
>
>
> --
> --
> _____________________________________________________
>
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>
> Dr. Scott Monks
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