Rhododendron sect. Vireya
Rhododendron sect. Vireya | |
---|---|
Rhododendron javanicum | |
Scientific classification | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Clade: | Angiosperms |
Clade: | Eudicots |
Clade: | Asterids |
Order: | Ericales |
Family: | Ericaceae |
Genus: | Rhododendron |
Subgenus: | Rhododendron subg. Rhododendron |
Section: | Rhododendron sect. Vireya (Blume) H.F.Copel. |
Type species | |
Rhododendron javanicum (Blume) Benn.
| |
Subsections | |
See text | |
Synonyms | |
Schistanthe |
Rhododendron section Vireya (vireyas) is a tropical group of
Description
Vireya are morphologically diverse, and characterised by
The formal description (Craven 2008) is: Scales sessile or sometimes stalked, lobed to deeply incised or sometimes entire; corolla campanulate, trumpet-like, salver-shaped, tubular or funnel-shaped; stamens (5–)10(–16), exserted to included, staminal filaments glabrous or hairy from the base; capsule valves twisting after dehiscence; seeds with a distinct tail at each end.
Taxonomy
Vireya is the largest of the three sections constituting
Subdivision
The section has traditionally been considered to consist of seven
- R. subsect. Albovireya Sleumer, type Rhododendron album Blume
- R. subsect. Euvireya Copel.f., type Rhododendron javanicum (Blume) Benn
- R. subsect. Malayovireya Sleumer, type Rhododendron malayanum Jack
- R. subsect. Phaeovireya Sleumer, type Rhododendron beyerinckianum Koord.
- R. subsect. Pseudovireya Clarke, type Rhododendron vaccinioides Hook.f.
- R. subsect. Siphonovireya Sleumer, type Rhododendron habbemae Koord
- R. subsect. Solenovireya Copel.f., type Rhododendron jasminiflorum Hook.
In Argent's (2006) treatment of Vireya as a subgenus, he included seven sections, with Euvireya consisting of five subsections,
Thus the new subsection structure is:
- R. subsect. Euvireya Copel.f., type Rhododendron javanicum (Blume) Benn
- R. subsect. Malayovireya Sleumer, type Rhododendron malayanum Jack
Characteristics:(Craven 2008)
- Euvireya – Scales sessile or stalked, scattered or dense, not of two obviously different size classes, lobed to deeply incised (or sometimes entire) and the centre not dark-coloured.
- Malayovireya – Scales sessile, dense, of two obviously different size classes, lobed and the centre dark-coloured.
As of December 2023[update], World Flora Online treated the group as R. subg.Vireya, divided into seven sections:[2]
- section Albovireya (Sleumer) Argent
- section Discovireya (Sleumer) Argent
- section Hadranthe Schltr.
- section Malayovireya (Sleumer) Argent
- section Pseudovireya (Clarke) Sleumer
- section Schistanthe Schltr.
- section Siphonovireya Argent
Distribution
Vireya are found throughout the
New Guinea has the most Vireya species of any island, with 167 species. Borneo has 46 species, the second most of any island.[10]
References
- ^ .
- ^ a b c WFO (December 2023). "Rhododendron subg. Vireya L." World Flora Online. Retrieved 2024-02-22.
- ISBN 1-872291-66-X. Archived from the originalon July 14, 2014. Retrieved July 3, 2014.
- ^ "Vireya Hybrid Gallery: K".
- ^ a b c Gillian K. Brown, Lyn A. Craven, Frank Udovicic and Pauline Y. Ladiges. Phylogenetic relationships of Rhododendron section Vireya (Ericaceae) inferred from the ITS nrDNA region. Australian Systematic Botany 19, 329–342. August 2006. 10.1071/SB05019
- S2CID 51949019.
- ^ ISBN 1-902896-61-0
- ^ Sleumer, Hermann Otto (1966) Ericaceae 1. Rhododendron: An account of rhododendron in Malesia, in ‘Flora Malesiana’. (Ed. CGGJ van Steenis) pp. 469–656. (Wolters-Noordhoff Publishing: Groningen, The Netherlands
- ^ Hall, B.D., L.A. Craven & L.A. Goetsch. 2006. The taxonomy of subsection Pseudovireya – two distinctly different taxa within subsection Pseudovireya and their relation to the rooting of section Vireya within subgenus Rhododendron. Rhododendron Sp. 1: 72, 91–97
- ^ G. Argent (1985) Vireya Rhododendrons in Borneo. Notes from the Royal Botanic Garden, Edinburgh 43 53–61
Bibliography
- Chris Callard. The History of Vireya Rhododendron Culture. Vireya Rhododendrons. 1998 onwards
- L.A. Craven, F. Danet, J.F. Veldkamp, L.A. Goetsch, B.D. Hall. Vireya Rhododendrons: their monophyly and classification (Ericaceae, Rhododendron section Schistanthe). Blumea 56, 2011: 153–158. 2011
- Goetsch, L.A., Craven, L.A. and Hall B.D. 2011. Major speciation accompanied the dispersal of Vireya Rhododendrons (Ericaceae, Rhododendron sect. Schistanthe) through the Malayan archipelago: Evidence from nuclear gene sequences. Taxon 60 (4): 1015–1028.
- Peter Adams. Evolution, Adaptive Radiation and Vireya Rhododendrons - Part I. JARS FALL 2012 pp. 201-3
- Peter Adams. Evolution, Adaptive Radiation and Vireya Rhododendrons - Part I. JARS SPRING 2013 pp. 74-76
- Biodiversity of the Vireya group of Rhododendron L. (Ericaceae) collections in New Zealand and their potential contribution to international conservation. Fayaz A. PhD Thesis, Department of Plant Science, Massey University, New Zealand. 2012
External links
- "Genus Rhododendron Taxonomic Tree". American Rhododendron Society. Retrieved 18 June 2014.