A number of insects either target rhododendrons or will opportunistically attack them. People have been known to become ill from eating honey made by bees feeding on rhododendron and azalea flowers. Rhododendrons and azaleas belong to the genus Rhododendron of the Ericaceae family. Of the three minor subgenera, all in C, two were discontinued. Consequently, the taxonomy has been historically complex. Large trusses of showy soft pink flowers bloom heavily in spring. The flowers are 2.5–3 cm (1 in) diameter, white, pink or pale purple, often with small greenish-yellow spots. ABBREVIATION : RHOPER SYNONYMS : Rhododendron nudiflora (L.) Torr. These included the position of the inflorescence buds (terminal or lateral), whether lepidote or elepidote, deciduousness of leaves, and whether new foliage was derived from axils from previous year's shoots or the lowest scaly leaves (Table 2.). [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 arboreum is also the state tree of the state of Uttarakhand, India. Fungus. Rhododendron ferrugineum (sometimes called alpenrose, snow-rose, or rusty-leaved alpenrose) is an evergreen shrub that grows just above the tree line in the Alps, Pyrenees, Jura and northern Apennines, on acid soils.It is the type species for the genus Rhododendron.It may grow up to 1 m tall and produces clusters of pinkish-red, bell-shaped flowers throughout the summer. Azaleas make up two subgenera of Rhododendron. The first two come from figures out of Greek mythology. It has been recorded as reaching heights of up to 66 feet (20 m), although more usually it has a height and spread up to 39 feet. Rhododendron macrophyllum literally means, “Rose tree with big leaves.” It is the state flower of Washington State. Plant name. Scientific Names of Plants, A-B . Pompey's soldiers reportedly suffered lethal casualties following the consumption of honey made from Rhododendron deliberately left behind by Pontic forces in 67 BCE during the Third Mithridatic War. That system continued up to modern times in Davidian's four volume The Rhododendron Species.[27]. They are distinguished from "true" rhododendrons by having only five anthers per flower. Rhododendron Name "A - Z" Lists Rhododendron Plant Search Rhododendron mucronulatum 'Radiant Pink' Scientific Name: Rhododendron L. (Ericaceae) mucronulatum Turcz. The Ericaceae family includes the heaths, heathers, cranberries, blueberries, mountain laurels, Japanese andromeda (pieris) and other ornamental plants.. Scientific name: Rhododendron x 'George Tabor'Pronunciation: roe-duh-DEN-drunCommon name(s): 'George Taber' azaleaFamily: EricaceaePlant type: shrubUSDA hardiness zones: 8 through 10 (Fig. Rhododendron schlippenbachii, the royal azalea, is a species of Rhododendron native to the Korean Peninsula and adjacent regions of Manchuria (Liaoning, Nei Mongol), Japan, and the Russian Far East.It is the dominant understory shrub in many Korean hillside forests, growing at … Most rhododendron flowers are bell-shaped and have 10 stamens. Information on Rhododendrons by Marc Colombel, founder of the Société Bretonne du Rhododendron. Rhododendron is a genus of more than 1,000 shrubs and small trees from the heath family, most with large, attention getting flowers.. Scientific Name. 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. Rhododendron 'Pioneer Silvery Pink' SKU. [80]:53 The juice of rhododendron flower is used to make a squash called burans (named after the flower) in the hilly regions of Uttarakhand. We have listed Flowers scientific names along with their common names. 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. Louisiana Plant ID is an online resource for images and descrptions of Louisiana plants and ecosystems. Fertilizer needs are low. [7][8] The leaves are spirally arranged; leaf size can range from 1–2 cm (0.4–0.8 in) to over 50 cm (20 in), exceptionally 100 cm (40 in) in R. sinogrande. [70][71] Animal studies and in vitro research has identified possible anti-inflammatory and hepatoprotective activities which may be due to the antioxidant effects of flavonoids or other phenolic compounds and saponins the plant contains. Current status in UK. [11], Rhododendron is the largest genus in the family Ericaceae, with as many as 1,024 species,[12] (though estimates vary from 850 to 1000[13]) and is morphologically diverse. Bloom-A-Thon Hot Pink Azalea Care. [2][11][17][38][39], The era of molecular analysis rather than descriptive features can be dated to the work of Kurashige (1988) and Kron (1997) who used matK sequencing. Leaves elliptic, flat, acute apex, wedge-shaped base, about 6.5 cm long, semi-glossy, moderate olive green, retained 2 years. This human selection has produced over 10,000 different cultivars which are propagated by cuttings. They were the result of Mr. Lee’s planned cross hybridization between the a series of azaleas and Rhododendron oldhamii ‘Fourth of July’. Water: Maintain moist soil. (roe-doe-DEN-dron mak-row-FILL-um) Names: The Pacific Rhododendron is also known as the Coast Rhododendron, California Rhododendron, or California Rosebay. Botanical Name. taquetii , is native to Jeju Island , and is a fertile azalea of the relative kind of the "Rhododendron mucronulatum" which is a deciduous broadleaf small shrub of the family Ericaceae. In all, Hymenanthes increased from one to two sections, while Azaleastrum, by losing one section and gaining two increased from two to three sections. USDA Zone? Genus name comes from the Greek words rhodo meaning rose and dendron meaning tree. Plant name. Flowers in multi-bud, ball-shaped trusses of 17. 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 Species in this genus may be part of the heath complex in oak-heath forests in eastern North America. This structure largely survived till recently (2004), following which the development of molecular phylogeny led to major re-examinations of traditional morphological classifications,[16][17] although other authors such as Candolle, who described six sections,[22] used slightly different numeration. This large, spreading evergreen azalea is most impressive when used in mass plantings but makes an attractive specimen planting as well. Description. 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. Scientists have given each and every recognized species on earth its own scientific names to uniquely identify them to avoid confusion. There is a huge variety of plants in the Rhododendron genus. This division was based on a number of what were thought to be key morphological characteristics. There are very few rules in gardening, but perhaps the most important one is to work within your zone. [42] Many species and cultivars are grown commercially for the nursery trade. Following publication of the studies of Goetsch et al. PJM Group is a series of rhododendron hybrids that resulted from crosses between R. carolinianum and R. dauricum var. It is the state flower of Washington State. Rhododendron in botanical garden Pruhonice-Czech republic, Annotated Checklist of the Flowering Plants of Nepal: Rhododendron, The Quarterly Bulletin of the American Rhododendron Society 1947–1981, Journal of the American Rhododendron Society (JARS) 1982–, The Rhododendron, Camellia & Magnolia Group of the Royal Horticultural Society, Rhododendron Species Foundation and Botanical Garden, Royal Botanic Garden Edinburgh: Rhododendrons at the four Gardens, National Rhododendron Gardens Melbourne Australia, https://en.wikipedia.org/w/index.php?title=Rhododendron&oldid=996426128, Plants used in traditional Chinese medicine, Articles containing Ancient Greek (to 1453)-language text, Short description is different from Wikidata, Articles with unsourced statements from June 2020, Articles with unsourced statements from May 2016, Creative Commons Attribution-ShareAlike License. Azalea nudiflora L. NRCS PLANT CODE : RHPE4 COMMON NAMES : pink azalea wild-honeysuckle purple-honeysuckle pinxterbloom azalea pinxter flower election-pink TAXONOMY : The currently accepted scientific name for pink azalea is Rhododendron periclymenoides (Michx.) [48] It is an introduced species, spreading in woodland areas and replacing the natural understory. Sleumer's system underwent many revisions by others, predominantly the Edinburgh group in their continuing Royal Botanic Garden Edinburgh notes. Many flower forms and flower variations are available. Semi-deciduous, 4 ft (1.2 m) in 10 years, upright. More than a thousand described species fall into this genus; many are native to Asia, but several grow native in the United States. )[41], Subsequent research has supported the revision by Goetsch, although has largely concentrated on further defining the phylogeny within the subdivisions. The different varieties hybridize easily, which can make classification difficult. Impact (1 is very low - 5 is very high) 3. The remaining small subgenus Therorhodion with its two species was left intact. 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. Impact (1 is very low - 5 is very high) 3. 'Cornell Pink' Nursery Availability ... Rhododendron mucronulatum 'Cornell Pink' Plant Citations. General biosecurity comments. Rhododendron x 'Roseum Pink' (H-1) SKU. taquetii , is native to Jeju Island , and is a fertile azalea of the relative kind of the "Rhododendron mucronulatum" which is a deciduous broadleaf small shrub of the family Ericaceae. The discontinued subgenera are Pentanthera, Tsutsusi, Candidastrum and Mumeazalea, while a new subgenus was created by elevating subgenus Azaleastrum section Choniastrum to subgenus rank. ABBREVIATION : RHOPER SYNONYMS : Rhododendron nudiflora (L.) Torr. The purpose of the Society is to encourage interest in and to disseminate knowledge about rhododendrons and azaleas. Rhododendron is also the provincial flower of Jiangxi, China and the state flower of Nagaland, the 16th state of the Indian Union. [citation needed] Azalea seeds can also be collected and germinated.Azaleas are generally slow-growing and do best in well-drained acidic soil (4.5–6.0 pH). [69], Rhododendron species have long been used in traditional medicine. This genus also contains shrubs commonly called azaleas within its 800 Rhododendron species and thousands of hybrids. Description. Rhododendron is a genus of shrubs and small to (rarely) large trees, the smallest species growing to 10–100 cm (4–40 in) tall, and the largest, R. protistum var. These bushes do best in well drained soil in a location with some afternoon shade. Broadleaf evergreen shrub, 6 ft (1.8 m), dense, wider than tall. Amongst the Zomi tribes in India and Myanmar, "Rhododendrons" called "Ngeisok" is used in a poetic manner to signify a lady. Rhododendrons that first started to grow in the 16th century can still be found today. Patrick Breen, [29][30] Most of the Balfourian series are represented by Sleumer as subsections, though some appear as sections or even subgenera. Absent. Large-scale commercial growing often selects for different characteristics than hobbyist growers might want, such as resistance to root rot when overwatered, ability to be forced into budding early, ease of rooting or other propagation, and saleability. [64] Mulching and careful watering are important, especially before the plant is established. Soon, as more species became available in the nineteenth century so did a better understanding of the characteristics necessary for the major divisions. Scientists through out the world use a common system for naming organisms, this system is known as the binomial nomenclature. 1022. Heat tolerant, may have red foliage in fall. Later, it was recognized that honey resulting from these plants has a slightly hallucinogenic and laxative effect. Azalea nudiflora L. NRCS PLANT CODE : RHPE4 COMMON NAMES : pink azalea wild-honeysuckle purple-honeysuckle pinxterbloom azalea pinxter flower election-pink TAXONOMY : The currently accepted scientific name for pink azalea is Rhododendron periclymenoides (Michx.) This is one of the species most prized by Rhododendron collectors, due to its fantastic foliage. The first two subgenera (Rhododendron and Hymenanthes) represent the species commonly considered as 'Rhododendrons'. Equally well-suited to mass plantings & reaches roughly 5 feet tall. Current status in UK. Special Features: Extreme cold-hardy buds Some of the best known species are noted for their many clusters of large flowers. The next two smaller subgenera (Pentanthera and Tsutsusi) represent the 'Azaleas'. sempervirens. They confirmed that the genus Rhododendron was monophyletic, with subgenus Therorhodion in the basal position, consistent with the matK studies. General biosecurity comments. [50]:540–541 They can self-propagate by sending up shoots from the roots. This plant holds the Guinness Record for World's Largest Rhododendron. Most species have brightly colored flowers which bloom from late winter through to early summer.[6]. 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