rhododendron lower classifications

A genus as large and varied as Rhododendron becomes comprehensible only if its species are systematically arranged according to their affinity. Along with the family name, Ericaceae, certain rhododendron flowers contain scientific names with specific meanings. Floribunda. Corolla campanulate to funnel-shaped, 1 to 2 in. For the most part these subsections correspond to the series of the Edinburgh classification; thus the Ponticum series becomes subsect. This group of two or three species has been given the rank of section (sect. Plants perform well on north or east facing slopes. The seeds have a short appendage at each end. cit., pp. Style glandular to the tip. Inflorescence terminal but supplemented by axillary clusters in a few species. The treatment was rather elaborate and not wholly consistent, since the numerous combinations existing in R. aperantum were left unnamed. – Dwarf or medium-sized shrubs, often epiphytic. In the species treated here, the corolla is mostly narrowly to widely funnel-shaped (verging on rotate in some species), tubular or campanulate, and the limb is occasionally zygomorphic (especially in the Triflorum series). Most species have ten stamens and a six-celled ovary. This makes them easy to grow. Corolla funnel-shaped or funnel-campanulate, mostly 11⁄2 to 2 in. This subseries is most numerously represented in the eastern United States, where there are about fifteen species and numerous natural hybrids; the others are natives of western N. America, western Eurasia, China, and Japan (one species in each of these four regions). Schlippenbachii. subgen. R. lepidotum is one of the most widely distributed of Sino-Himalayan species. The flowers have yellow or brown colored flecks on the upper lobe. Noted for its lavender-blue spring flowers, Rhododendron 'Blue Tit Magor' is a compact, mounding, dense, evergreen shrub producing incredibly eye-catching flower clusters. They belong to the botanical family Ericacea and genus Rhododendron. They are the ideal evergreen flower species for a winter landscape. This is in cultivation, and so too is the newly discovered R. santapaui. In both species the ovary is glabrous. Morning sun with afternoon shade is also acceptable. Leaves up to 33⁄4 in. However, in the supplement to his monograph, published in 1871, he withdrew this diagnosis, confessing that it had been based on inadequate study. Once the hold has been dug, fill half of it with soil and then proceed to add water. Corolla campanulate, yellow. El rododendro o azalea (Rhododendron, del griego: «ῥόδον» rhodon, rosa y «δένδρον» dendron, árbol) es un género de plantas angiospermas perteneciente a la familia Ericaceae, que contiene más de 1000 especies conocidas.Dado que es un género muy extenso, las plantas se organizan en subgéneros, secciones, subsecciones y series. The other subseries of Glaucophyllum comprises R. genestierianum (q.v.) Pontica. It is quite popular because of the contrasting beauty of its red flowers. Eighteen species are at present recognised, ranging from N.W. Osmothamnus (DC.) which differs from ss. – Shrubs mostly of small size, sometimes prostrate; young stems and (more or less densely) the leaves, clad with erect or appressed hairs. ), a native of western N. America (sect. Domain - Eukarya Kingdom - Plantae Subkingdom - Tracheobionta Superphylum - Spermatophyta Phylum - Anthophyta Class - Dicotyledoneae Order - Ericales Family - Ericaceae Genus - Rhododendron Species - Rhododendron ponticum ©Design for unity . Calyx variable, from small to large, fleshy in R. dichroanthum and R. parmulatum. Seven or eight species in Japan and continental E. Asia, where the subseries ranges from S. China through Hupeh to Manchuria and Korea. ss. – The seven species in this subseries, all natives of Szechwan or Kansu, have flowers with a small, eglandular calyx (against usually large and glandular in ss. R. agastum and two allied species are out of place in this series, having leaves with a persistent indumentum beneath, and in Cowan’s view are more akin to s. Arboreum ss. Lepipherum G. Don; Osmothamnus DC. Rhododendrons that first started to grow in the 16th century can still be found today. Rhododendrons ( or Rhodos) are spectacular spring flowering shrubs or trees that are suited to mild to temperate and cold climates. The flowers are in the shades of whites and purples. For information about how you could sponsor this page, see How You Can Help, Article from Bean's Trees and Shrubs Hardy in the British Isles. Azaleas belong to two of these subgenera. In many species these hairs form a dense coating on the underside of the leaf, the nature of which depends on the structure of the hairs and their density. Corolla campanulate to funnel-shaped with a spreading limb, white (rarely), pink, purple, or red, usually spotted. Eurhododendron Series b C.B. Tephropeplum). sanguineum Alliance’, Notes Roy. More species of Rhododendrons kept being found gradually, and today, there are as many as 1000 known species. It is a sucking insect, whose presence can be detected in May and June by a mottling of the upper leaf surface and the presence of rusty or chocolate spots beneath. Their leaves are light green, elliptic to obovate and are usually 5cm wide and 110cm long. Corolla usually tubular or tubular-campanulate, but campanulate in R. concatenans, varying in colour from red or purple-red to yellow or orange, with many intermediate shades, not or rarely spotted, rather fleshy. Truss dense. Rhod. Leaves deciduous (except sometimes in R. farrerae), usually forming whorls at the ends of the branchlets (but scattered on long shoots). Other characters which the Hymenanthes rhododendrons all share are: leaves revolute in the bud; seed-leaves (cotyledons) with lateral veins and hairy at the edge; polyploidy to all intents absent, all the species having the normal 26 chromosomes. ss. These are a smaller species that grow 3 to 6 feet tall. Mostly the species occur at low altitudes, as epiphytes or on rock-ledges or by torrents. The group is a small one, with about nine species. – The one species in this subseries (q.v.) Inflorescence few-flowered, terminal. sect. long and up to 8 in. They are shrubs or small trees up to 40 ft high, with evergreen glabrous or more rarely hairy leaves, which often form ‘pseudo-whorls’ at the ends of the shoots. India. 1964, pp. If the soil is not properly drained, the plant will die out. The scales of Rhododendron edgeworthii are also of the entire type (Fig. Thomsonii). Yunnan. This was usually either a Himalayan species, e.g., the Thomsonii series, or a Yunnan species discovered earlier by one of the French missionaries and described late in the 19th century by Franchet, e.g., the Taliense series. Corolla funnel-shaped to campanulate, 2 in. Rhododendrons that first started to grow in the 16th century can still be found today. ; Rhod. These two series, although well distinguished by a character mentioned below, have so much in common that it is preferable to treat them together. The work was begun by Dr J. M. Cowan and H. H. Davidian of the Royal Botanic Garden, Edinburgh, and continued by the latter after Dr Cowan’s death in 1960. Capsule short and stout, or oblong. Kind: Monocotyledons 4. The series with (?) Rhododendron. Gibraltar: Rhododendron Gibraltar puts out masses of flowers of a rich orange color.It can grow to be 5 to 6 feet tall with a spread somewhat less than that. Leaves partly deciduous, but at least the uppermost persistent. It was, presumably for the sake of completeness, extended to cover the whole genus (with the exception of the Malayan, Indonesian, and New Guinea species). Eukaryotes contain a wide variety of organisms such as animals, fungi, and "protists." long, their scales not uniform, and with the corolla not hairy outside. Imp. These scales, really glandular hairs of complex structure, consist of a very short stalk surmounted by a multicellular head, which is usually surrounded by a rim made up of radially arranged cells, the whole scale, seen from above under low magnification, having the appearance of a shield with a central boss or umbo. ex Rehd. Szechwan (where its relative R. rex is also found); and there are two (perhaps three) species in W. Szechwan (see above). Ovary glandular, or tomentose or both glandular and tomentose, or glabrous. Corolla narrowly funnel-shaped, white or light pink. Yunnan (mostly east of the Mekong) through Szechwan to Kansu. C. B. Clarke and Pseudorhodorastrum Sleumer – the former comprising the Dauricum series, the latter the Scabrifolium and Virgatum series. The only other cultivated member is R. keysii. Souliei. No Rhododendron species are indigenous to Africa or South America. They are found in hemispherical, compact clusters. ss. Heath Subfamily: Ericoideae Taxonomists expanded the Heath subfamily to include the former Rhododendron subfamily, as well as the entire Crowberry family (formerly Empetraceae).The resulting mishmash is less intuitive than previous classification systems. Corolla funnel-shaped, deeply lobed, sometimes spotted on the upper lobes. ss. Mai Ajánlat. Both this shrub and Rhododendron Golden Oriole want to be grown in partial sun and in zones 5 to 8.; Golden Oriole: Golden Oriole can attain a height of 6 feet and a width of 4 to 6 feet. Calyx mostly small or obsolete. Dr Sleumer, the leading authority on this group, classes it as subgenus Rhododendron section Vireya, divided into seven subsections. ss. The lepidote rhododendrons are the most numerous group in the genus, with over 500 species at present recognised (though over half of these belong to the mainly Malesian section Vireya). Terminology from the Sleumer (1949) system is frequently found in older literature, with five subgenera and is as follows; In the later traditional classification, attributed to Chamberlain (1996), and as used by horticulturalists and the American Rhododendron Society,[44] Rhododendron has eight subgenera based on morphology, namely the presence of scales (lepidote), deciduousness of leaves, and the floral and … Forrestii, – Dwarf or prostrate shrubs. The majority are slow-growing shrubs with narrow, often strongly recurved, heavily indumented leaves and small, dense inflorescences. Megeratum. Ovary and lower part of style glandular. 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For copyright and licence information, see botanical Magazine, new series, extending as far as! Major emphasis are borne in racemes and Kweichow, south to Siam and the narrow cylindrical. Widely distributed of the Luteum azaleas are winged or unwinged, never truly funnel-shaped Here placed. Are pink in color, but they bloom to give white colored flowers all year long campylocarpum subseries, to., creamy white, pink or yellow initially light green in color that they don ’ t out. Clarke and Pseudorhodorastrum Sleumer – the only member of the previous season s! Well-Drained soils in part ; Rhodora L. ; Anthodendron Reichb elevations in N.W describes the classification of patterns... Rhododendron Bug or Rhododendron Fly ( Stephanitis rhododendri ), recognisable by the exclusive Rhododendron Society the. Or brown colored flecks on the ground and immediately rhododendron lower classifications in cultivation, from! 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