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''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 (up to 20 m tall), with medium-sized to large leaves (very large, over 40 cm long, in a few species). The flowers are large, produced in terminal trusses of 5-40 together.〔 The subgenus includes one section, ''Rhododendron'' sect. ''Ponticum'', divided into 24 subsections and about 140 species. In 2005 the subgenus was expanded by adding section ''Pentanthera''.〔 Section ''Ponticum'' (24 subsections) * ''R.'' subsect. ''Arborea'' (three species) * ''R.'' subsect. ''Argyrophylla'' (six species) * ''R.'' subsect. ''Auriculata'' (one species, R. auriculatum) * ''R.'' subsect. ''Barbata'' (two species) * ''R.'' subsect. ''Campanulata'' (two species) * ''R.'' subsect. ''Campylocarpa'' (four species) * ''R.'' subsect. ''Falconera'' (seven species) * ''R.'' subsect. ''Fortunea'' (ten species) * ''R.'' subsect. ''Fulgensia'' (two species) * ''R.'' subsect. ''Fulva'' (two species) * ''R.'' subsect. ''Glischra'' (five species) * ''R.'' subsect. ''Grandia'' (nine species) * ''R.'' subsect. ''Griersoniana'' (one species, R. griersonianum) * ''R.'' subsect. ''Irrorata'' (seven species) * ''R.'' subsect. ''Lanata'' (one species, R. lanatum) * ''R.'' subsect. ''Maculifera'' (six species) * ''R.'' subsect. ''Neriiflora'' (19 species) * ''R.'' subsect. ''Parishia'' (three species) * ''R.'' subsect. ''Pontica'' (13 species) * ''R.'' subsect. ''Selensia'' (five species) * ''R.'' subsect. ''Taliensia'' (20 species) * ''R.'' subsect. ''Thomsonia'' (seven species) * ''R.'' subsect. ''Venatora'' (one species, R. venator) * ''R.'' subsect. ''Williamsiana'' (one species, R. williamsianum) * ''Lacteum alliance'' Section ''Pentanthera'' (2 subsections) * ''Pentanthera'' (G. Don) Pojarkova (15 species) * ''Sinensia'' (1 species: ''Rhododendron molle'') ==Cultivation== This subgenus includes the majority of the larger evergreen rhododendrons widely grown as ornamental plants. Some species, notably ''Rhododendron ponticum'', have escaped from cultivation and become invasive in some regions such as New Zealand. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Rhododendron subg. Hymenanthes」の詳細全文を読む スポンサード リンク
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