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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 occidentale Torr. & A.Gray 1876: United States(Oregon, California) Rhododendron periclymenoides (Michx.) Shinners 1962 (pink azalea, pinxterbloom azalea, pinxter flower) United States(southern New York south to Georgia) Rhododendron prinophyllum (Small) Millais 1917 (rose azalea, roseshell azalea) Eastern United States
Rhododendron canescens, the piedmont azalea or mountain azalea, or wild azalea, or native azalea, or dead man’s handkerchief is a pink-blooming azalea native to the Eastern United States. [ 1 ] References
Rhododendron viscosum is also known as the swamp azalea, catch-fly azalea (due to sticky and glandular hairs), and clammy azalea. [1] Its large land area includes growth on the coastal area of Mississippi, and along the east coast from Florida to Maine. In addition to the coastal areas, the swamp azalea can be found inland in higher elevations.
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 ...
Rhododendron maximum is a species of Rhododendron native to the Appalachians of eastern North America, from Alabama north to coastal Nova Scotia. Its common names include great laurel , [ 2 ] great rhododendron , rosebay rhododendron , American rhododendron and big rhododendron .
Rhododendron atlanticum is a compact, loosely branched, deciduous shrub that typically grows to be two to three feet tall at maturity but can grow up to six feet, and is two to three feet wide. [3] It is a deciduous shrub 50–150 cm (20–59 in) tall, forming a thick understory in forests, spreading by underground stolons .
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).
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