[Taxacom] valid species name question

[John Grehan]

Thank you! I also had an off list response the same. Appreciate the
clarification.

John Grehan

On Sun, Jan 31, 2016 at 3:28 PM, Richard Rabeler <rabeler at umich.edu> wrote:

> John:
>
> I would say that the authors are saying that Sonchus bourgeaui Sch. Bip.
> var. imbricatus (Svent.) Boulos is the currently accepted name for this
> taxon.
>
> Both names are available for the taxon - usage would depend on whether one
> believed it should be recognized at the species or varietal rank.
>
> Rich Rabeler, MICH
>
> On Sun, Jan 31, 2016 at 1:48 PM, John Grehan <calabar.john at gmail.com>
> wrote:
>
>> I would be grateful if anyone could clarify, with respect to the excerpt
>> below, which species name is being represented as the correct name -
>> whether Sonchus imbricatus or Sonchus bourgeaui. It is not obvious to me,
>> probably due to my lack of familiarity with formal taxonomic style.
>>
>> Thanks.John Grehan
>>
>>
>> 3a. Sonchus imbricatus Svent. (1960)
>> Accepted name: Sonchus bourgeaui Sch. Bip. var. imbricatus
>> (Svent.) Boulos (1973, p. 163).
>> Protologue: ‘ ‘ Archipielagus Canariensis in parva insula
>> “ Roque del Este ” dicta, ubi legi cum fl ore et fructu die
>> 16 Aprilis 1954. Valde rara ’ ’ .
>> Type: ‘ ‘ In parva insula “ Roque del Este ” dicta, versus 70 m
>> supra mare. In humosis inter rupes abruptas (locus classicus).
>> Plus minusve abundanter. 16-IV-1954, Sventenius ’ ’
>> (CAI, lectotype; Boulos 1973, p. 163), non vide. “ Parva
>> insula “ Roque del Este ” vulgo dicta. Habitat: in humosis
>> inter rupes abruptas. Plus minusve abundanter. 70 m supra
>> mare. Leg. 16 Aprilis 1954 ’ ’ , E. R. Sventenius (typewritten
>> label, ORT 9029!; isolectotype). “ Roque del Este. 16-IV-54.
>>   /  abundante. 70 m. Sitio semi sombr í o en humus ’ ’ , E. R.
>> Sventenius (handwritten label; ORT 17066!; isolectotype).
>> Icones: Svent., Addit. Fl. Canar. 76 (1960, Table XXX).
>>
>> from Mejías, J.A., Santos-Guerra, A., & Kim, S.C. 2013. Revision and
>> typification of names in
>>
>> Canarian *Sonchus* (Asteraceae: Cichorieae) published by or based on
>> material from E. R. Sventenius. *Nordic Journal of Botany* 31: 734–745.
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>
>