''Rhododendron''
subsection ''Tsutsusi'' is a subsection of the
genus
Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial nom ...
''
Rhododendron'', 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 ''
Azaleastrum'', consisting of 66 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 Octo ...
.
Description
Leaves generally
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, ...
but some apical leaves over winter and are
dimorphic, young twigs with flattened multicellular hairs that are widely distributed.
[
]
Taxonomy
For etymology, see 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 ...
''.
Species
Selected species include;[
* '' Rhododendron breviperulatum''
* '' Rhododendron eriocarpum''
* '']Rhododendron indicum
''Rhododendron indicum'' is an Azalea '' Rhododendron'' species native to Japan (S & W Honshu, Shikoku, Kyushu, Yakushima).
Taxonomy
It is the type species for the ''Tsutsusi'' section and subsection, and was the original ''Tsutsusi'' describe ...
''
* '' Rhododendron kaempferi''
* ''Rhododendron kiusianum
''Rhododendron kiusianum'', the Kyushu azalea, is a species of flowering plant in the family Ericaceae, native to Kyushu, Japan. It is a parent of a large number of hybrid dwarf azaleas. It is the official flower of Unzen, Nagasaki, and of Kagos ...
''
* '' Rhododendron mucronatum''
* '' Rhododendron nakaharae''
* '' Rhododendron oldhamii''
* '' Rhododendron rubropilosum''
* '' Rhododendron scabrum''
* '' Rhododendron serpyllifolium''
* ''Rhododendron simsii
''Rhododendron simsii'' (杜鵑) is a rhododendron species native to East Asia, where it grows at altitudes of .
Description
It is a twiggy evergreen or semi-evergreen shrub growing to in height, with leaves that are ovate, elliptic-ovate or ob ...
''
* '' Rhododendron stenopetalum''
* '' Rhododendron subsessile''
* '' Rhododendron tosaense''
* '' Rhododendron tschonoskii''
* '' Rhododendron tsusiophyllum''
* '' Rhododendron yedoense''
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
*
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 ...
Plant subsections
{{Ericaceae-stub