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  2. POR-3065

Senecio jacobaea exists 4 times in new backbone

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      Description

      Senecio jacobaea Brot. ex Willk. & Lange species
      -> accepted, 149k occurrences

      Senecio jacobaea L.
      -> synonym of Jacobaea vulgaris Gaertn., 3,5k occurrences

      Senecio jacobaea Kunze species
      -> doubtful, 2,5k European occurrences, 2 child varieties

      Senecio jacobaea D.Don species
      -> doubtful, no occurrences

      http://mdoering.github.io/nub-browser/app/#/taxon/3097243

      From Euro+Med & Tropicos it appears only the Linnean synonym is recognized

      The Plant List does contain all those names above, treats the Linnean version as a synonym and has all others as "unresolved":
      http://www.theplantlist.org/tpl1.1/search?q=Senecio+jacobaea

      It seems correct that all those names are in the backbone, but as far as I have reviewed all occurrences come in as plain "Senecio jacobea" or "Senecio jacobea L." and should therefore not be attached to any of the non Linnean names. Examples:
      http://www.gbif-uat.org/occurrence/1075246666/verbatim

      The occurrences attached to S. jacobea Kunze appear to be linked to the 2 varieties:
      Senecio jacobaea var. jacobaea
      http://www.gbif-uat.org/occurrence/1096936442/verbatim
      (verbatim=Senecio jacobaea subsp. jacobaea)

      Jacobaea vulgaris subsp. gotlandica (Neuman) B.Nord.
      http://www.gbif-uat.org/occurrence/1123210939/verbatim
      (verbatim=Jacobaea vulgaris subsp. gotlandica)

      So this is mostly an issue with occurrence name matching which has to be improved to deal with authorship and probably better consider ranks.

      In order to allow the species matching to prefer matches to Linnee instead of the accepted Willk. & Lange name that name should also be doubtful and not accepted.
      As improved species matching is handled in POR-2768 this issue should focus on making Senecio jacobaea Brot. ex Willk. & Lange doubtful instead

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          Markus Döring added a comment -

          The occurrence matching is resolved now, but the Senecio/Jacobaea taxonomy is a bit messed up in our backbone as far as I can tell:

          Jacobaea vulgaris Gaertn.
             *Jacobaea vulgaris Moench, 1794
             *Jacobaea vulgaris var. vulgaris
             *Senecio jacobaea L. 
             *Senecio jacobaea subsp. jacobaea
             *Senecio jacobaea var. jacobaea
             *Senecio flosculosus Jord.
             *Senecio jacobaeoides Willk.
             *Senecio montanus Kit., 1814
             *Senecio nemorosus Jord.   
            Jacobaea vulgaris subsp. vulgaris
            Jacobaea vulgaris subsp. dunensis (Dumort.) Pelser & Meijden
               *Senecio dunensis Dumort.
               *Senecio jacobaea subsp. dunensis (Dumort.) Kadereit & P.D.Sell
               *Senecio jacobaea subsp. nudus (Weston) Soják, 1980
               *Senecio jacobaea var. discoideus Wimm. & Grab.
               *Senecio jacobaea var. flosculosus DC., 1805
               *Senecio jacobaea var. nudus Weston, 1777
           
          Jacobaea erratica (Bertol.) Fourr.
             *Senecio jacobaea var. barbareifolius Fiori
          
          Jacobaea aquatica (Hill) G.Gaertn., B.Mey. & Scherb.
             *Senecio jacobaea subsp. barbareifolius Krock.
          
          Hippolytia tomentosa (DC.) Tzvelev
             *Senecio jacobaea var. grandiflorus Turcz. ex DC.
          
          Senecio jacobaea Brot. ex Willk. & Lange
            Senecio jacobaea L. var. gotlandicus Neuman
               *Jacobaea vulgaris subsp. gotlandica (Neuman) B.Nord.
          

          As Senecio jacobeae appears to be moved to its own genus Jacobaea, the subspecies Jacobaea vulgaris subsp. gotlandica should probably be accepted and the currently accepted Senecio variety be synonymized under it. See also a recent paper about the origins of J.v. gotlandica: http://www.jstor.org/stable/27757007?seq=1#page_scan_tab_contents

          I will add the gotlandica subspecies to our patch list

          Show
          Markus Döring added a comment - The occurrence matching is resolved now, but the Senecio/Jacobaea taxonomy is a bit messed up in our backbone as far as I can tell: Jacobaea vulgaris Gaertn. *Jacobaea vulgaris Moench, 1794 *Jacobaea vulgaris var. vulgaris *Senecio jacobaea L. *Senecio jacobaea subsp. jacobaea *Senecio jacobaea var. jacobaea *Senecio flosculosus Jord. *Senecio jacobaeoides Willk. *Senecio montanus Kit., 1814 *Senecio nemorosus Jord. Jacobaea vulgaris subsp. vulgaris Jacobaea vulgaris subsp. dunensis (Dumort.) Pelser & Meijden *Senecio dunensis Dumort. *Senecio jacobaea subsp. dunensis (Dumort.) Kadereit & P.D.Sell *Senecio jacobaea subsp. nudus (Weston) Soják, 1980 *Senecio jacobaea var. discoideus Wimm. & Grab. *Senecio jacobaea var. flosculosus DC., 1805 *Senecio jacobaea var. nudus Weston, 1777 Jacobaea erratica (Bertol.) Fourr. *Senecio jacobaea var. barbareifolius Fiori Jacobaea aquatica (Hill) G.Gaertn., B.Mey. & Scherb. *Senecio jacobaea subsp. barbareifolius Krock. Hippolytia tomentosa (DC.) Tzvelev *Senecio jacobaea var. grandiflorus Turcz. ex DC. Senecio jacobaea Brot. ex Willk. & Lange Senecio jacobaea L. var. gotlandicus Neuman *Jacobaea vulgaris subsp. gotlandica (Neuman) B.Nord. As Senecio jacobeae appears to be moved to its own genus Jacobaea, the subspecies Jacobaea vulgaris subsp. gotlandica should probably be accepted and the currently accepted Senecio variety be synonymized under it. See also a recent paper about the origins of J.v. gotlandica: http://www.jstor.org/stable/27757007?seq=1#page_scan_tab_contents I will add the gotlandica subspecies to our patch list
          Show
          Markus Döring added a comment - Done: https://github.com/gbif/backbone-patch/commit/abb1ae2fdb470c7f190d87f9e5228cb4a6164705 http://www.gbif-uat.org/species/119587590

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              Reporter:
              Markus Döring
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