Rhododendron subg. Pentanthera

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Rhododendron subg. Pentanthera
Rhododendron luteum4.jpg
Rhododendron luteum
Scientific classification Red Pencil Icon.png
Kingdom: Plantae
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Ericales
Family: Ericaceae
Genus: Rhododendron
Subgenus:Rhododendron subg. Pentanthera
G.Don Gen. Syst. III. 846 (1834)
Sections

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Rhododendron subgenus Pentanthera was a subgenus of the genus Rhododendron . The common name azalea is applied to many of the species, and also to species in some other subgenera. [1] In 2005 it was discontinued and its four sections moved or dismembered. [2]

<i>Rhododendron</i> genus of plants

Rhododendron is a genus of 1,024 species of woody plants in the heath family (Ericaceae), either evergreen or deciduous, and found mainly in Asia, although it is also widespread throughout the highlands of the Appalachian Mountains of North America. It is the national flower of Nepal as well as the state flower of West Virginia and Washington in United States, and state tree of Sikkim and Uttarakhand in India. Most species have brightly colored flowers which bloom from late winter through to early summer.

Azalea genus of plants

Azaleas are flowering shrubs in the genus Rhododendron, particularly the former sections Tsutsuji (evergreen) and Pentanthera (deciduous). Azaleas bloom in the spring, their flowers often lasting several weeks. Shade tolerant, they prefer living near or under trees. They are part of the family Ericaceae.

The subgenus included four sections:

<i>Rhododendron</i> sect. <i>Pentanthera</i> section of plants

Rhododendron sect. Pentanthera is a section of subgenus Pentanthera in the genus Rhododendron. It comprises 15-16 species of deciduous shrubs native to temperate regions of the Northern Hemisphere.

<i>Rhododendron</i> sect. <i>Rhodora</i> section of plants

Rhodora was a section of subgenus Pentanthera in the genus Rhododendron, that has since been discontinued. It comprised two species, both deciduous shrubs native to eastern North America:

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In botany, a section is a taxonomic rank below the genus, but above the species. The subgenus, if present, is higher than the section, and the rank of series, if present, is below the section. Sections may in turn be divided into subsections.

<i>Rhododendron</i> subg. <i>Rhododendron</i> subgenus of plants

Rhododendron subgenus Rhododendron is a subgenus of the genus Rhododendron. With around 400 species, it is the largest of the eight subgenera containing nearly half of all known species of Rhododendron and all of the lepidote species.

<i>Rhododendron</i> subg. <i>Hymenanthes</i> subgenus of plants

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, with medium-sized to large leaves. The flowers are large, produced in terminal trusses of 5-40 together.

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<i>Epidendrum sect. Schistochila</i>

Epidendrum sect. SchistochilaRchb.f. (1861) is a section of the subgenus E. subg. AmphiglottiumLindl. (1841) of the Genus Epidendrum of the Orchidaceae. E. sect. Schistochila differs from the section E. sect. Holochila in that the species in E. sect. Holochila have undivided lips; the species in E. sect. Schistochila have lobate lips. The species in both E. sect. Schistochila and E. sect. Holochila have racemose inflorescences, unlike those in E. sect. Polycladia, which have truly paniculate inflorescences. Like the other sections of E. subg. Amphiglottium, the members of E. sect. Schistochila are sympodial orchids bearing thin stems with alternate leaves, a long peduncle covered with thin, imbricating sheathes, and a lip adnate to the very end of the column.

<i>Rhododendron</i> sect. <i>Tsutsusi</i> section of plants

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> section of plants

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</i> subg. <i>Azaleastrum</i> subgenus of plants

Rhododendron subgenus Azaleastrum is a subgenus of the genus Rhododendron.

<i>Rhododendron</i> subg. <i>Choniastrum</i> subgenus of plants

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> subsection of plants

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> subsection of plants

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

<i>Carex subg. Vignea</i> subgenus of plants

Carex subg. Vignea is a subgenus of the sedge genus Carex, containing around 300 of the 2000 species in the genus. Its members are characterised by having bisexual, sessile spikes, where the female flowers have two stigmas each.

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.

Bibliography