[Taxacom] Quick question regarding formation of some family names in botany

[Tony Rees]

Ruggiero et al., 2015 have the order Diniphys[i]ales (based on Dinophysis)
as Dinophysidales, also incorrect I am guessing...

- Tony


On Tue, 9 Feb 2021 at 05:50, Tony Rees <tonyrees49 at gmail.com> wrote:

> Of course the second instance of "Dinophysaceae" in my message above
> should read "Dinophysiaceae", sorry...
> <https://about.me/TonyRees>
> Regards - Tony
>
>
> On Tue, 9 Feb 2021 at 05:49, Tony Rees <tonyrees49 at gmail.com> wrote:
>
>> Dear Taxacomers,
>>
>> I have come across the following issue and believe the answer lies in the
>> relevant nomenclatural Code (ICNafp), but need some expert guidance since
>> my latin is not so good...
>>
>> The question concerns the correct formation of family names (and above)
>> based on genus names ending in -physis (examples in dinoflagellates,
>> treated under the botanical Code for this purpose: Oxyphysis, Dinophysis)
>> for which both types of derived family names have been used in the
>> literature, without or with the final "i", namely  Oxyphysaceae /
>> Oxyphysiaceae,  Dinophysaceae / Dinophysaceae. The same applies to names of
>> higher rank based on such genera, e.g. Dinophysales / Dinophysiales, etc.
>>
>> The relevant Article of the current ICNafp states:
>>
>> "*18.1.* The name of a family is a plural adjective used as a noun; it
>> is formed from the genitive singular of a name of an included genus by
>> replacing the genitive singular inflection (Latin *‑**ae,* *‑**i,* *‑*
>> *us,* *‑**is;* transcribed Greek *‑**ou, **‑**os,* *‑**es,* *‑**as,* or
>> *‑**ous,* and its equivalent *‑**eos*) with the termination *‑**aceae* (but
>> see Art. 18.5
>> <https://www.iapt-taxon.org/nomen/pages/main/art_18.html#Art18.5>). For
>> generic names of non-classical origin, when analogy with classical names is
>> insufficient to determine the genitive singular, *‑**aceae* is added to
>> the full word. Likewise, when formation from the genitive singular of a
>> generic name results in a homonym, *‑**aceae* may be added to the
>> nominative singular. For generic names with alternative genitives the one
>> implicitly used by the original author must be maintained, except that the
>> genitive of names ending in *‑**opsis* is always *‑**opsidis*."
>>
>> So I get the feeling that versions without the included "i" would be
>> correct in this instance (Oxyphysaceae, Dinophysaceae) but would welcome
>> confirmation from others who are more expert in this area than I.
>>
>> Regards - Tony
>> Tony Rees, New South Wales, Australia
>> https://about.me/TonyRees
>> www.irmng.org
>>
>