Rhododendron subg. Hymenanthes

Rhododendron subg. Hymenanthes
Rhododendron ponticum
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Ericales
Family: Ericaceae
Genus: Rhododendron
Subgenus: Rhododendron subg. Hymenanthes
(Blume) K.Koch
Sections
  • Ponticum
  • Pentanthera

Rhododendron subg. Hymenanthes is a subgenus of the genus Rhododendron, with a widespread distribution in the temperate Northern Hemisphere. The species are evergreen shrubs and small to medium-sized trees (up to 20 m tall), with medium-sized to large leaves (very large, over 40 cm long, in a few species). The flowers are large, produced in terminal trusses of 5-40 together.[1]

The subgenus includes two sections, Rhododendron sect. Ponticum, divided into 24 subsections and about 140 species, and (since 2005) Rhododendron sect. Pentanthera[2]

Section Ponticum (24 subsections)

Section Pentanthera (2 subsections)

  • R. subsect. Pentanthera (G. Don) Pojarkova (15 species)
  • R. subsect. Sinensia (one species: Rhododendron molle)

Cultivation

This subgenus includes the majority of the larger evergreen rhododendrons widely grown as ornamental plants. Some species, notably Rhododendron ponticum, have escaped from cultivation and become invasive in some regions such as New Zealand.

References

  1. ^ Chamberlain, DF; Hyam R; Argent G; Fairweather G; Walter KS (1996). The genus Rhododendron: its classification and synonymy. Royal Botanic gardens Edinburgh. ISBN 1-872291-66-X. Archived from the original on July 14, 2014. Retrieved July 3, 2014.
  2. ^ Goetsch, Loretta A.; Eckert, Andrew J.; Hall, Benjamin D. (July–September 2005). "The molecular systematics of Rhododendron (Ericaceae): a phylogeny based upon RPB2 gene sequences". Systematic Botany. 30 (3): 616–626. doi:10.1600/0363644054782170. S2CID 51949019.

Bibliography


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