If you want to search a specific name, you may use the search box below. Rhododendron maximum, the most widespread rhododendron of the Appalachian Mountains, is the state flower of the US state of West Virginia, and is in the Flag of West Virginia. And I will also mention rhodos with flowers more or less red-pink and lavender-pink. Amongst the Zomi tribes in India and Myanmar, "Rhododendrons" called "Ngeisok" is used in a poetic manner to signify a lady. Description. The leaves are sometimes glossy, but practically all … Impact (1 is very low - 5 is very high) 3. [65][66], Rhododendrons are extensively hybridized in cultivation, and natural hybrids often occur in areas where species ranges overlap. Flowers are small, about 5 cm across, purplish-pink in bud, opening pale purplish-pink and lightly spotted purplish red, openly funnel-shaped, wavy edges; in somewhat loose ball-shaped clusters with 15 or so flowers. Other significant areas of diversity are in the mountains of Korea, Japan and Taiwan. Both species and hybrid rhododendrons (including azaleas) are used extensively as ornamental plants in landscaping in many parts of the world, including both temperate and subtemperate regions. Rhododendron 'Pink Pancake' (Azalea 'Pink Pancake') Common pest name. [11], Although Rhododendrons had been known since the description of Rhododendron hirsutum by Charles de l'Écluse (Clusius) in the sixteenth century, and were known to classical writers (Magor 1990), and referred to as Chamaerhododendron (low-growing rose tree), the genus was first formally described by Linnaeus in his Species Plantarum in 1753. Rhododendron mucronulatum 'Cornell Pink' Rhododendron taquetii , scientific name: Rhododendron mucronulatum var. Of the remaining three sections, monotypic Viscidula was discontinued by moving Rhododendron nipponicum to Tsutsusi (C), while Rhodora (2 species) was itself polyphyletic and was broken up by moving Rhododendron canadense to section Pentanthera (B) and Rhododendron vaseyi to section Sciadorhodion, which then became a new section of subgenus Azaleastrum (C). [9][10], They have frequently been divided based on the presence or absence of scales on the abaxial (lower) leaf surface (lepidote or elepidote). The remaining small subgenus Therorhodion with its two species was left intact. Rhododendron viscosum 'Pink Mist' Scientific Name: Rhododendron L. (Ericaceae) viscosum Torr. Subgenus Tsutsusi (C) was reduced to section status retaining the name, and included in subgenus Azaleastrum. The scientific name for a leaf is a leaf. In addition to the two separate genera included under Rhododendron by Chamberlain (Ledum, Tsusiophyllum), Goetsch et al.. added Menziesia (Clade C). Azalea, certain species of Rhododendron, of the family Ericaceae, formerly given the generic name Azalea. [69], Rhododendron species have long been used in traditional medicine. As new species of what are now considered Rhododendron were discovered, if they seemed to differ significantly from the type species they were assigned to separate genera. Rhododendron 'Pink Ruffles' (Rhododendron 'Pink Ruffles') Common pest name. Click on a scientific name below to expand it in the PLANTS Classification Report. 1)Planting month for zone 8: year roundPlanting month for zone 9: year roundPlanting month for zone 10: year roundOrigin: not native to North America Azaleas. All rhododendron plants belong to the genus Rhododendron. Because azaleas are closely related to rhododendrons, it is sometimes difficult for a layperson to distinguish between the two. The Rhododendrons Flower. Pink flower buds. (1997) p 87 Parts Shown: Flower Photo. Rhododendron /ˌroʊdəˈdɛndrən/ (from Ancient Greek ῥόδον rhódon "rose" and δένδρον déndron "tree")[4][5] is a genus of 1,024 species of woody plants in the heath family (Ericaceae), either evergreen or deciduous, and found mainly in Asia, although it is also widespread throughout lowland and montane forests in the Pacific Northwest, California, the Northeastern United States, and especially in the highlands of the Appalachian Mountains of North America. Dense habit and smaller size make this a versatile rhodie. [49], Rhododendron bud blast, a fungal condition that causes buds to turn brown and dry, and not open, is caused by the fungus Pycnostysanus azaleae, which may be brought to the plant by the rhododendron leafhopper, Graphocephala fennahi.[50](p562). Sku #30960. There are over 28,000 cultivars of Rhododendron in the International Rhododendron Registry held by the Royal Horticultural Society. Be the first to review this product. Thekopsora minima. The major finding of Goetsch and colleagues was that all species examined (except R. camtschaticum, subgenus Therorhodion) formed three major clades which they labelled A, B and C, with the subgenera Rhododendron and Hymenanthes nested within clades A and B as monophyletic groups respectively. The rating is by the American Rhododendron Society. [51] Azaleas are frequently used around foundations and occasionally as hedges, and many larger-leafed rhododendrons lend themselves well to more informal plantings and woodland gardens, or as specimen plants. Rhododendron x 'Scintillation' (H-2) SKU. Following publication of the studies of Goetsch et al. Absent. Description. Rhododendron macrophyllum literally means, “Rose tree with big leaves.”. Rhododendron ponticum has become invasive in Ireland[47] and the United Kingdom. 1022. [37] Finally Chamberlain brought the various systems together in 1996, with 1,025 species divided into eight subgenera. 'Radiant Pink' Nursery Availability For a long period of autumn to the next spring, white, pink, red or single or double flowers similar to roses (roses) will bloom. This division was based on a number of what were thought to be key morphological characteristics. roseum (no commnon name). [45] The largest of these is subgenus Rhododendron, containing nearly half of all known species and all of the lepidote species. The single species of monotypic subgenus Candidastrum (Rhododendron albiflorum) was moved to subgenus Azaleastrum, section Sciadorhodion. Rhododendron maximum is an evergreen shrub growing to 4 m (13 ft), rarely 10 m (33 ft), tall. Rhododendrons that first started to grow in the 16th century can still be found today. Rhododendron macrophyllum literally means, “Rose tree with big leaves.” It is the state flower of Washington State. Developed by Hoogendorn before 1985 (Greer, 1996). In addition, rhododendrons can easily be suffocated by other plants or evergreen trees that grow up around them and block sunlight. Following the cladistic analysis of Goetsch et al. A new calcium-tolerant stock of rhododendrons (trademarked as 'Inkarho') has been exhibited at the RHS Chelsea Flower Show in London (2011). Scientific pest name. RHODODENDRON 'Roseum Pink'( Catawbiense Group) Plant Common Name. The numerical quality rating (e.g., 3/5/4) is based on a 1 (poorest) to 5 (best) scale for the following attributes (and in the order given): flower / foliage & plant / performance. Major diseases include Phytophthora root rot, stem and twig fungal dieback; Ohio State University Extension provides information on maintaining health of rhododendrons. Likelihood to spread to UK (1 is very low - 5 is very high) 4. The colour pink occurs a lot in the 'world of flowers'.With pink flowering Rhododendrons the number appears almost unlimited.So I make a choice, also out of early- and late-flowering rhodos. Subgenus Pentanthera (deciduous azaleas) with its four sections was dismembered by eliminating two sections and redistributing the other two between the existing subgenera in clades B (Hymenanthes) and C (Azaleastrum), although the name was retained in section Pentanthera (14 species) which was moved to subgenus Hymenanthes. [2], The 300 tropical species within the Vireya section of subgenus Rhododendron occupy the Malay archipelago from their presumed Southeast Asian origin to Northern Australia, with 55 known species in Borneo and 164 in New Guinea. The four sections of Pentanthera between clades B and C, with two each, while Azaleastrum had one section in each of A and C. Thus subgenera Azaleastrum and Pentanthera needed to be disassembled, and Rhododendron, Hymenanthes and Tsutsusi correspondingly expanded. Type. USDA Zone? That system continued up to modern times in Davidian's four volume The Rhododendron Species.[27]. [11] The centres of diversity are in the Himalayas and Malaysia,[40] with the greatest species diversity in the Sino-Himalayan region, Southwest China and northern Burma, from Himachal Pradesh, Uttarakhand, Nepal, Sikkim, Nagaland to northwestern Yunnan and western Sichuan and southeastern Tibet. Later Gao et al. Eleven similar cases have been documented in Istanbul, Turkey during the 1980s. Azaleas make up two subgenera of Rhododendron. The effects of R. ponticum was mentioned in the 2009 film Sherlock Holmes as a proposed way to arrange a fake execution. have found that the root of the plant is able to reduce the activity of NF-κB in rats. 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