''Rhododendron''
subsection ''Brachycalyx'' is a subsection of the
genus
Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...
''
Rhododendron
''Rhododendron'' (; from Ancient Greek ''rhódon'' "rose" and ''déndron'' "tree") 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 nati ...
'', in section ''
Tsutsusi
''Rhododendron'' section ''Tsutsusi'' (spelled ''Tsutsuji'' in some older texts) 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''. Contai ...
'',
subgenus
In biology, a subgenus (plural: subgenera) is a taxonomic rank directly below genus.
In the International Code of Zoological Nomenclature, a subgeneric name can be used independently or included in a species name, in parentheses, placed between t ...
''
Azaleastrum'', consisting of fifteen species of
Azaleas
Azaleas are flowering shrubs in the genus ''Rhododendron'', particularly the former sections ''Tsutsusi'' (evergreen) and '' Pentanthera'' (deciduous). Azaleas bloom in the spring (April and May in the temperate Northern Hemisphere, and Octob ...
from
Asia
Asia (, ) is one of the world's most notable geographical regions, which is either considered a continent in its own right or a subcontinent of Eurasia, which shares the continental landmass of Afro-Eurasia with Africa. Asia covers an area ...
.
Description
Leaves
A leaf (plural, : leaves) is any of the principal appendages of a vascular plant plant stem, stem, usually borne laterally aboveground and specialized for photosynthesis. Leaves are collectively called foliage, as in "autumn foliage", wh ...
deciduous
In the fields of horticulture and Botany, the term ''deciduous'' () means "falling off at maturity" and "tending to fall off", in reference to trees and shrubs that seasonally shed leaves, usually in the autumn; to the shedding of petals, aft ...
, pseudoverticillate,
rhombic, crowded at the shoot apex and
monomorphic, hairs usually confined to axils.
Taxonomy
The section ''Brachcalyx'' was first proposed by JC Tate
[ based on the Chinese '' Rhododendron farrerae'', and described by Robert Sweet in 1831, in ''The British Flower Garden''.][
Species;][
* '' Rhododendron amagianum''
* '' Rhododendron decandrum''
* '' Rhododendron dilatatum''
* '' Rhododendron farrerae''
* '' Rhododendron hidakanum''
* '' Rhododendron kiyosumense''
* '' Rhododendron lagopus''
* '' Rhododendron mariesii''
* '' Rhododendron mayebarae''
* '' Rhododendron nudipes''
* '' Rhododendron reticulatum''
* '' Rhododendron sanctum''
* '' Rhododendron tashiroi''
* '' Rhododendron viscistylum''
* '' Rhododendron wadanum''
* '' Rhododendron weyrichii''
]
References
Bibliography
Loretta Goetsch, Andrew Eckert and Benjamin Hall. Classification of genus ''Rhododendron''. 2005 Annual ARS Convention
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* Pojarkova AI, in Schischkin & Bobrov, Flora URSS. 18: 55. 1952.
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External links
Flora of China
Flora Republica Popularis Sinicae
Tropicos
see als
Section Tsutsusi
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Brachycalyx
Plant subsections
{{Ericaceae-stub