Plagianthus

{{Short description|Genus of flowering plants in the mallow family Malvaceae}}

{{Use dmy dates|date=August 2019}}

{{Automatic taxobox

|image = Plagianthus divaricatus.jpg

|image_caption = Plagianthus divaricatus, illustration with analysis by William Jackson Hooker

|display_parents = 2

|taxon = Plagianthus

|authority = J.R.Forst. & G.Forst.

|synonyms_ref =

|synonyms =

  • Blepharanthemum Klotzsch
  • Philippodendron Endl.
  • Philippodendrum Poit.
  • Wrenciala A.Gray

|type_species = Plagianthus divaricatus

|type_species_authority = J.R.Forst. & G.Forst.

|subdivision_ranks = Species

|subdivision =

}}

Plagianthus is a genus of flowering plants confined to New Zealand and the Chatham Islands. The familial placement of the genus was controversial for many years, but modern genetic studies show it definitely belongs in the Malvaceae subfamily Malvoideae. The name means "slanted flowers".

Description

The type species P. divaricatus is a divaricate shrub which grows at the edges of salt marshes. The other species, P. regius is a tree which in juvenile stage may be divaricate (subsp. regius) or not (subsp. chathamica).

These are the only species recognized currently. In the past, species from related genera such as Hoheria (New Zealand), Asterotrichion, Lawrencia and Gynatrix (Australia) were sometimes assigned to the genus. Instead, all these genera are now grouped in an informal "Plagianthus alliance".

References

{{Reflist|31em|refs=

{{Cite book |author1=Johann Reinhold Forster |author2=Georg Forster |name-list-style=amp | publisher= B. White, T. Cadell, and P. Elmsly | year= 1776 | location= London | title= Characteres generum plantarum, quas in itinere ad insulas maris Australis: collegerunt, descripserunt, delinearunt, annis 1772-1775|title-link=Characteres generum plantarum | chapter= plate 43 | chapter-url= https://www.biodiversitylibrary.org/item/23365#page/213/mode/1up }}

{{Cite book |last1=Kubitzki | first1= Klaus | last2=Bayer |first2 = Clemens |name-list-style=amp | publisher= Springer-Verlag | year= 2003 | location= Berlin | title= Flowering Plants, Dicotyledons: Malvales, Capparales and non-betalain Caryophyllales | page= 305 | series= The Families and Genera of Vascular Plants | volume= V | isbn= 978-3-642-07680-0}}

{{Cite web |title=Plagianthus J.R.Forst. & G.Forst. {{!}} Plants of the World Online {{!}} Kew Science |url=http://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:26029-1 |access-date=2020-06-05 |website=Plants of the World Online }}

{{Cite journal|author=Tate, J. A., J. F. Aguilar, S. J. Wagstaff, J. C. La Duke, T. A. Bodo Slotta and B. B. Simpson|year= 2005|title= Phylogenetic relationships within the tribe Malveae (Malvaceae, subfamily Malvoideae) as inferred from ITS sequence data|journal= American Journal of Botany|volume= 92|pages= 584–602|doi=10.3732/ajb.92.4.584|issue=4|pmid=21652437|url=https://digital.csic.es/bitstream/10261/24879/1/2005_Fuertes_AmeJouBot_92_584-602.pdf|doi-access=free}}

}}