| Rhododendron sect. Rhodora | |
|---|---|
 | |
| Rhododendron vaseyi | |
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Ericales |
| Family: | Ericaceae |
| Genus: | Rhododendron |
| Subgenus: | Rhododendron subg. Hymenanthes |
| Section: | Rhododendron sect. Rhodora (L.) G.Don 1834 |
| Type species | |
| Rhododendron canadense | |
| Species | |
See text | |
Rhodora was a section of subgenus Pentanthera in the genus Rhododendron , that has since been discontinued.
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.
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. [1]
It comprised two species, both deciduous shrubs native to eastern North America:
| Image | Name | Distribution |
|---|---|---|
 | Rhododendron canadense (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. |
 | Rhododendron vaseyi A.Gray | North Carolina |
Rhododendron is a very large genus of about 1,024 species of woody plants in the heath family (Ericaceae). They can be either evergreen or deciduous. Most species are native to eastern Asia and the Himalayan region, but smaller numbers occur elsewhere in Asia, and in North America, Europe and Australia.
Vaccinium is a common and widespread genus of shrubs or dwarf shrubs in the heath family (Ericaceae). The fruits of many species are eaten by humans and some are of commercial importance, including the cranberry, blueberry, bilberry (whortleberry), lingonberry (cowberry), and huckleberry. Like many other ericaceous plants, they are generally restricted to acidic soils.
Sorbus is a genus of over 100 species of trees and shrubs in the rose family, Rosaceae. Species of Sorbus (s.l.) are commonly known as whitebeam, rowan, mountain-ash and service tree. The exact number of species is disputed depending on the circumscription of the genus, and also due to the number of apomictic microspecies, which some treat as distinct species, but others group in a smaller number of variable species. Recent treatments classify Sorbus in a narrower sense to include only the pinnate leaved species of subgenus Sorbus, raising several of the other subgenera to generic rank.
Ribes is a genus of about 200 known species of flowering plants, most of them native to the temperate regions of the Northern Hemisphere. The various species are known as currants or gooseberries, and some are cultivated for their edible fruit or as ornamental plants. Ribes is the only genus in the family Grossulariaceae.
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. In 2005 it was discontinued and its four sections moved or dismembered.
Rhododendron sect. Pentanthera is a section of subgenus Hymenanthes in the genus Rhododendron. It comprises 15-16 species of deciduous shrubs native to temperate regions of the Northern Hemisphere.
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.
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.
Rhododendron spinuliferum is a species of flowering plant in the family Ericaceae, native to Yunnan and Sichuan, China.
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.
Rhododendron section Vireya (vireyas) is a tropical group of Rhododendron species, numbering about 300 in all. The group may also be treated as Rhododendron subgenus Vireya. Vireyas are native to southeastern Asia and range from Thailand to Australia.
Rhododendron subgenus Azaleastrum is a subgenus of the genus Rhododendron.
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.
Rhododendron subsection Brachycalyx is a subsection of the genus Rhododendron, in section Tsutsusi, subgenus Azaleastrum, consisting of fifteen species of azaleas from Asia.
Rhododendron subsection Tsutsusi is a subsection of the genus Rhododendron, in section Tsutsusi, subgenus Azaleastrum, consisting of 66 species of Azaleas.
Allium is a genus of monocotyledonous flowering plants with hundreds of species, including the cultivated onion, garlic, scallion, shallot, leek, and chives. The generic name Allium is the Latin word for garlic, and the type species for the genus is Allium sativum which means "cultivated garlic".
Dracophyllum menziesii, commonly known as pineapple scrub, is a species of shrub endemic to the South and Stewart Islands of New Zealand. In the heath family Ericaceae, it inhabits mountain slopes and cliffs from sea level up to 1,500 m (4,921 ft) and reaches a height of 0.5–1 m (1.6–3.3 ft). A 2017 assessment using the New Zealand Threat Classification System classified it as "Not Threatened", giving it an estimated population upwards of 100,000.
Quercus subgenus Cerris is one of the two subgenera into which the genus Quercus was divided in a 2017 classification. It contains about 140 species divided among three sections. It may be called the Old World clade or the mid-latitude clade; all species are native to Eurasia and North Africa.
Subgenera, sections and species of genus Rhododendron , according to morphological (Chamberlain) and phylogenetic (Goetsch, Craven) schemes | ||||||||||||||||||
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| Chamberlain (1996) |
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| Goetsch (2005) Craven (2008) |
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