Rhododendron subg. Rhododendron

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Rhododendron subg. Rhododendron
Rhododendron ferrugineum
Scientific classification Red Pencil Icon.png
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Ericales
Family: Ericaceae
Genus: Rhododendron
Subgenus: Rhododendron subg. Rhododendron
Type species
Rhododendron ferrugineum

See text

Rhododendron hirsutum Rhododrendron hirsutum 280603.jpg
Rhododendron hirsutum
A species of the Vireya section. Vireya.jpg
A species of the Vireya section.

Rhododendron subgenus Rhododendron is a subgenus of the genus Rhododendron . With around 400 species, it is the largest of the eight subgenera (more recently reduced to five) [1] containing nearly half of all known species of Rhododendron and all of the lepidote (scales on the underside of the leaves) species. [1] [2]



The subgenus has traditionally included three sections:

However, following phylogenetic analysis, Craven (2008) raised the appropriately named Pseudovireya subsection of Vireya to section rank, splitting it into two geographic clades, the Asian mainland species as Pseudovireya, and the Malesian species as Discovireya, making five sections in all. [4] The new sections are thus:

Characteristics: (Craven 2008)

Craven also provides a formal Key to the subgenus.


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<i>Rhododendron spinuliferum</i>

Rhododendron spinuliferum is a species of Rhododendron native to Yunnan, southwestern Sichuan, and Guizhou China.

<i>Rhododendron lochiae</i>

Rhododendron lochiae is a species of pretty looking shrub plants, one of only two recognised species of the genus found growing naturally in Australia, only in restricted mountain–top cloud forest habitats (endemic) within the tropical rainforests region of north eastern Queensland. The other "Rhododendron viriosum" was only formally classified as a separate species in 2002. It is a member of the plant family Ericaceae.

<i>Sida acuta</i>

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<i>Rhododendron</i> sect. <i>Tsutsusi</i>

Rhododendron section Tsutsusi was a subgenus of the genus Rhododendron, commonly referred to as the evergreen azaleas. In 2005 it was reduced to a section of subgenus Azaleastrum. Containing 80 - 117 species, it includes both deciduous and evergreen types and is distributed in Japan, China and northeastern Asia. They are of high cultural importance to the Japanese. Among the species in this genus lie the largest flowering azaleas.

<i>Rhododendron sect. Vireya</i>

Rhododendron section Vireya (vireyas) is a tropical group of Rhododendron species, numbering about 300 in all. Vireyas are native to southeastern Asia and range from Thailand to Australia.

<i>Rhododendron hippophaeoides</i> Species of plant

Rhododendron hippophaeoides (灰背杜鹃) is a species of flowering plant in the Ericaceae family. It is in the subgenus Rhododendron, subsection Lapponica. It is a small shrub, up to 4 feet (1.2 m) tall at maturity, native to altitudes of 2400–4800 meters in southwest Sichuan and many parts of Yunnan, China. Leaves are up to 1.5 inches long, gray-green above, and with overlapping yellowish-buff scales below. Flowers are bright rose or lavender-blue to bluish purple, or (rarely) white.

Trompettia cardenasiana is a spiny shrub bearing very small leaves, 0.35–0.5 cm (0.1–0.2 in) by 0.1–0.12 cm (0.04–0.05 in), a yellow trumpet-shaped campanulate flower, measuring about 3 cm (1.2 in) long and globose fruit. The growth habit is somewhat reminiscent of certain Lycium species. It is endemic to Bolivia, growing in dry, Andean valleys at altitudes of 2,000–2,500 m (6,600–8,200 ft) and 3,000–3,500 m (9,800–11,500 ft) and has been collected near the town of Cotagaita in Potosí Department.

<i>Psychotria capensis</i>

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<i>Rhododendron</i> subg. <i>Azaleastrum</i>

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<i>Rhododendron</i> subg. <i>Choniastrum</i>

Rhododendron subg. Choniastrum is a subgenus of the genus Rhododendron, originally a section of subgenus Azaleastrum it was elevated to subgenus rank after cladistic analysis revealed that together with Rhododendron it formed a major clade, distinct from other sections of Azaleastrum.

<i>Rhododendron subsect. Brachycalyx</i>

Rhododendron subsection Brachycalyx is a subsection of the genus Rhododendron, in section Tsutsusi, subgenus Azaleastrum, consisting of fifteen species of Azaleas from Asia.

<i>Rhododendron subsect. Tsutsusi</i>

Rhododendron subsection Tsutsusi is a subsection of the genus Rhododendron, in section Tsutsusi, subgenus Azaleastrum, consisting of 66 species of Azaleas.


  1. 1 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.
  2. 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.
  3. Argent, G. Rhododendrons of subgenus Vireya. 2006. Royal Horticultural Society. ISBN   1-902896-61-0
  4. Craven, L.A.; Goetsch, L.A.; Hall, B.D.; Brown, G.K. (2008). "Classification of the Vireya group of Rhododendron (Ericaceae)". Blumea - Biodiversity, Evolution and Biogeography of Plants. 53 (2): 435. doi:10.3767/000651908X608070.