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Rhododendron vaseyi, the pinkshell azalea, [4] is a species of flowering plant in the heath family Ericaceae.It is endemic to the Appalachian highlands of North Carolina.The specific epithet vaseyi honors the American plant collector George Richard Vasey and his father Dr. George Vasey, Chief Botanist at the United States Department of Agriculture from 1872 to 1893.
Hymenanthes, with approximately 225 species, and subgenus Rhododendron, with approx. 400 species, comprise what gardeners typically describe as "Rhododendrons." Two subgenera are generally known to gardeners as "Azaleas", and include many fewer true species: Pentanthera , which comprises the deciduous azaleas, and Tsutsusi , which includes ...
Members' experience ranges from novice to expert. The society provides a means through which people interested in rhododendrons and azaleas can communicate and cooperate with others via its publications, events, local and regional meetings and international conferences. Society activities include public education, plant sales, flower shows ...
The following is a list of rhododendron cultivars and species which have gained the Royal Horticultural Society's Award of Garden Merit.They are mostly hardy evergreen shrubs with abundant, brilliantly-coloured, trumpet-shaped flowers, often in large spherical trusses.
Nova Zembla Rhododendrons growing in a nursery in New Jersey. Like other ericaceous plants, most rhododendrons prefer acid soils with a pH of roughly 4.5–5.5; some tropical Vireyas and a few other rhododendron species grow as epiphytes and require a planting mix similar to orchids. Rhododendrons have fibrous roots and prefer well-drained ...
Rhododendron periclymenoides has low levels of toxicity, and all parts of the plant may cause vomiting or diarrhoea if ingested in quantity. [6] The poisons produced by rhododendrons are known as grayanotoxins, which are a class of neurotoxins. These neurotoxins work by blocking the inactivation of sodium channel receptors, causing cell ...
Rhododendron javanicum Traditional to botanical taxonomy , subdivisions of taxonomic ranks further divide subgenera , sections , and subsections into species and subspecies / varieties . Genus Rhododendron consists of eight subgenera based on morphology ; this page refers to only those lower divisions in subgenus Rhododendron , commonly known ...
Rhododendron arborescens, also known as smooth azalea [1] or sweet azalea, is a species of flowering plant in the family Ericaceae, native to the eastern seaboard of the United States. It grows to a height of 2.4–3 metres (8–10 ft). Generally blooming in late spring and early summer, the flowers range in color from white to pink with red ...