Archivos de Diario para agosto 2022

miércoles, 24 de agosto de 2022

New paper revises genus Trillium

A recent paper recognizes four subgenera in genus Trillium:

Lampley, Jayne A.; Gereau, Roy; Floden, Aaron; Schilling, Edward E. (2022-07-05). "A revised subgeneric classification of Trillium (Parideae, Melanthiaceae)". Phytotaxa. 552 (5): 278–286. doi:10.11646/phytotaxa.552.5.1

This paper provides the basis for a much-needed revision of genus Trillium on iNaturalist.

Publicado el miércoles, 24 de agosto de 2022 a las 12:41 PM por trscavo trscavo | 3 comentarios | Deja un comentario

Proposal to revise Trillium on iNat

Proposed revision of genus Trillium on iNaturalist:

  1. Create genus Trillidium in (Parideae, Melanthiaceae), sister to genus Trillium
  2. Move taxa Trillium govanianum and Trillium undulatum to genus Trillidium

    • The latter will touch more than 10,000 observations
  3. Rename Trillium subgenus Sessilium to Trillium subgenus Sessilia

    • The latter will touch many observations
  4. Create three new subgenera:

    • Trillium subgenus Trillium
    • Trillium subgenus Callipetalon
    • Trillium subgenus Delostylis
  5. Move each species-level taxon (and its children, if any) into the appropriate subgenus

As of August 2022, genus Trillium on iNaturalist contains 55 species-level taxa (including named hybrids). As a result of the previous actions, those taxa will be partitioned as follows:

  • Genus Trillidium (2): T. govanianum; T. undulatum.
  • Trillium subgenus Trillium (16): T. apetalon; T. camschatcense; T. cernuum; T. channellii; T. erectum; T. flexipes; T. × hagae; T. hibbersonii; T. × miyabeanum; T. rugelii; T. simile; T. smallii; T. sulcatum; T. tschonoskii; T. vaseyi; T. × yezoense.
  • Trillium subgenus Callipetalon (5): T. crassifolium; T. grandiflorum; T. nivale; T. ovatum; T. scouleri.
  • Trillium subgenus Delostylis (4): T. catesbaei; T. georgianum; T. persistens; T. pusillum.
  • Trillium subgenus Sessilia (25): no change
  • Ungrouped (3): T. × crockerianum; T. × komarovii; T. taiwanense.

Notes

Notes for iNaturalist curators:

  1. The authors of [Lampley et al. 2022] note that Trillium apetalon hybridizes with T. tschonoskii and T. camschatcense to form two sterile hybrids, T. × miyabeanum and T. × yezoense, respectively. However, the authors do not explicitly include these hybrids in subgenus Trillium. That said, they have been included above since their parents are members of subgenus Trillium.
  2. The authors of [Lampley et al. 2022] do not mention Trillium × komarovii. One of its parents is known to be T. camschatcense but the other parent is unknown. It remains ungrouped above.
  3. The authors of [Lampley et al. 2022] do not mention Trillium × crockerianum. As originally described, its parents are Trillium ovatum and Trillium rivale but the latter is now a member of genus Pseudotrillium, and so T. × crockerianum has become an intergeneric hybrid. It remains ungrouped above.
  4. Trillium taiwanense is explicitly not recognized by the authors of [Lampley et al. 2022] based on DNA evidence and morphological similarities to genus Paris. It remains ungrouped above.

References

  • [Weakley et al. 2018] Weakley, A. S.; Sorrie, B. A.; LeBlond, R. J.; Poindexter, D. B.; Floden, A. J.; Schilling, E. E.; Franck, A. R.; Kees, J. C. (2018). “New combinations, rank changes, and nomenclatural and taxonomic comments in the vascular flora of the southeastern United States. IV.” Journal of the Botanical Research Institute of Texas 12 (2), 461–480. https://doi.org/10.17348/jbrit.v12.i2.950
  • [Lampley 2021] Lampley, Jayne A. (2021). A systematic and biogeographic study of Trillium (Melanthiaceae) (PhD). University of Tennessee. https://trace.tennessee.edu/utk_graddiss/7031
  • [Lampley et al. 2022] ​​Lampley, Jayne A.; Gereau, Roy; Floden, Aaron; Schilling, Edward E. (2022). "A revised subgeneric classification of Trillium (Parideae, Melanthiaceae)". Phytotaxa. 552 (5): 278–286. https://doi.org/10.11646/phytotaxa.552.5.1

External links

https://www.inaturalist.org/taxa/49465-Trillium
https://www.inaturalist.org/journal/trscavo/69318-new-paper-revises-genus-trillium
https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:24857-1

Publicado el miércoles, 24 de agosto de 2022 a las 11:50 PM por trscavo trscavo | 1 comentario | Deja un comentario