Rhododendron sect. Rhodora
{{Use dmy dates|date=October 2023}}
{{Short description|Section of flowering plants}}
{{Automatic taxobox
| image = Rhododendron vaseyi kz01.jpg
| image_caption = Rhododendron vaseyi
| taxon = Rhododendron sect. Rhodora
| authority = (L.) G.Don 1834
| subdivision_ranks = Species
| subdivision = See text
| type_species =Rhododendron canadense
| synonyms =
}}
Rhodora was a section of subgenus Pentanthera in the genus Rhododendron, that has since been discontinued.
Description
The section was closely related to sect. Pentanthera, differing from it in the flower corolla having only three lobes, rather than five, the upper three lobes of sect. Pentanthera being joined into a single three-lipped lobe in sect. Rhodora.
Taxonomy
The distinct floral structure resulted in Rhodora being treated as a distinct genus at one time. Treating it as such though resulted in the remainder of the genus Rhododendron being paraphyletic. However detailed phylogenetic analysis revealed that Rhodora was not a distinct entity, but rather polyphyletic, and it was disassembled, each species being allocated to other sections. Rhododendron canadense was moved to section Pentanethera, subgenus Hymenanthes and Rhododendron vaseyi was moved to section Sciadorhodion, which then became a new section of subgenus Azaleastrum.
It comprised two species, both deciduous shrubs native to eastern North America:
| class="wikitable collapsible" | ||
| Image | Name | Distribution |
|---|---|---|
| 120px | Rhododendron canadense {{small|(L.) Torr.}} | Canada in Newfoundland and extends into eastern Ontario and the United States from New York, New Jersey, and at high altitudes in the Appalachian Mountains further south to Pennsylvania. |
| 120px | Rhododendron vaseyi {{small|A.Gray}} | North Carolina |
References
{{Reflist|refs=
{{cite journal|last=Goetsch|first=Loretta A.|author2=Eckert, Andrew J. |author3=Hall, Benjamin D.
|date=July–September 2005 |title=The molecular systematics of Rhododendron (Ericaceae): a phylogeny based upon RPB2 gene sequences |journal=Systematic Botany |volume=30 |issue=3 |pages=616–626 |url=http://www.ingentaconnect.com/content/aspt/sb/2005/00000030/00000003/art00012 |doi=10.1600/0363644054782170|s2cid=51949019 }}
}}
Bibliography
- [http://www.ars-grin.gov/cgi-bin/npgs/html/splist.pl?19859 Germplasm Resources Information Network: Rhododendron sect. Rhodora]
- Huxley, A., ed. (1992). New RHS Dictionary of Gardening. Macmillan.
- {{cite book | last1=Chamberlain | first1=D. | last2=Royal Botanic Garden | first2=Edinburgh | title=The genus Rhododendron : it's classification & synonymy | publisher=Royal Botanic Garden, Edinburgh | publication-place=Edinburgh | date=1996 | isbn=1-872291-66-X | oclc=34886265 |url=http://www.rbge.org.uk/about-us/publications/publications-catalogue/botanical-publications/rhododendron-publications}}
- {{cite journal | doi = 10.3767/000651908X608070 | title = Classification of the Vireya group of Rhododendron (Ericaceae) | year = 2008 | last1 = Craven | first1 = L.A. | last2 = Goetsch | first2 = L.A. | last3 = Hall | first3 = B.D. | last4 = Brown | first4 = G.K. | journal = Blumea – Biodiversity, Evolution and Biogeography of Plants | volume = 53 | issue = 2 | pages = 435|url=http://www.repository.naturalis.nl/record/525519 }}
{{Rhododendron}}
{{taxonbar|from= Q16989181}}
Category:Historically recognized plant taxa
{{Ericaceae-stub}}