|
Tsutsuji
''Rhododendron'' section ''Tsutsusi'' (spelled ''Tsutsuji'' in some older texts) was a subgenus of the genus ''Rhododendron'', commonly referred to as the evergreen azaleas. In 2005 it was reduced to a section of subgenus ''Azaleastrum''. Containing 80 - 117 species, it includes both deciduous and evergreen types and is distributed in Japan, China and northeastern Asia. They are of high cultural importance to the Japanese. Among the species in this genus lie the largest flowering azaleas. Description Tsutsusi are characterised by the presence of terminal buds that contain both floral and vegetative shoots. Many also have flattened multicellular ferrugineous (rust coloured) hairs, which can cover the leaves and stems providing a coppery appearance, or pseudoverticillate leaves that are rhombic in shape. However some have hairs confined to the axils, or base of floral buds. Taxonomy The section has traditionally included two subsections, classified on the basis of their leaves, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Azalea
Azaleas are flowering shrubs in the genus ''Rhododendron'', particularly the former sections ''Tsutsusi'' (evergreen) and '' Pentanthera'' (deciduous). Azaleas bloom in the spring (April and May in the temperate Northern Hemisphere, and October and November in the Southern Hemisphere), their flowers often lasting several weeks. Shade tolerant, they prefer living near or under trees. They are part of the family Ericaceae. Cultivation Plant enthusiasts have selectively bred azaleas for hundreds of years. This human selection has produced over 10,000 different cultivars which are propagated by cuttings. 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). Fertilizer needs are low. Some species need regular pruning. Azaleas are native to several continents including Asia, Europe and North America. They are planted abundantly as ornamentals in the southeastern US, southern Asia, and parts o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhododendron
''Rhododendron'' (; from Ancient Greek ''rhódon'' "rose" and ''déndron'' "tree") is a very large genus of about 1,024 species of woody plants in the heath family (Ericaceae). They can be either evergreen or deciduous. Most species are native to eastern Asia and the Himalayan region, but smaller numbers occur elsewhere in Asia, and in North America, Europe and Australia. It is the national flower of Nepal, the state flower of Washington and West Virginia in the United States, the state flower of Nagaland in India, the provincial flower of Jiangxi in China and the state tree of Sikkim and Uttarakhand in India. Most species have brightly colored flowers which bloom from late winter through to early summer. Azaleas make up two subgenera of ''Rhododendron''. They are distinguished from "true" rhododendrons by having only five anthers per flower. Species Description ''Rhododendron'' is a genus of shrubs and small to (rarely) large trees, the smallest species growing to t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhododendron Subsect
''Rhododendron'' (; from Ancient Greek ''rhódon'' "rose" and ''déndron'' "tree") is a very large genus of about 1,024 species of woody plants in the heath family (Ericaceae). They can be either evergreen or deciduous. Most species are native to eastern Asia and the Himalayan region, but smaller numbers occur elsewhere in Asia, and in North America, Europe and Australia. It is the national flower of Nepal, the state flower of Washington and West Virginia in the United States, the state flower of Nagaland in India, the provincial flower of Jiangxi in China and the state tree of Sikkim and Uttarakhand in India. Most species have brightly colored flowers which bloom from late winter through to early summer. Azaleas make up two subgenera of ''Rhododendron''. They are distinguished from "true" rhododendrons by having only five anthers per flower. Species Description ''Rhododendron'' is a genus of shrubs and small to (rarely) large trees, the smallest species growing to tall, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhododendron Indicum
''Rhododendron indicum'' is an Azalea ''Rhododendron'' species native to Japan (S & W Honshu, Shikoku, Kyushu, Yakushima). Taxonomy It is the type species for the ''Tsutsusi'' section and subsection, and was the original ''Tsutsusi'' described by Engelbert Kaempfer Engelbert Kaempfer (16 September 16512 November 1716) was a German naturalist, physician, explorer and writer known for his tour of Russia, Persia, India, Southeast Asia, and Japan between 1683 and 1693. He wrote two books about his travels. ''A ... in Japan in 1712, from the Japanese name ''Kirishima-tsutsuji''. Cultivation There are many cultivars, including the Satsuki azaleas. Gallery File:Kibitujinja5164.JPG, Close up of flower File:CPonte_Azalea1.jpg, Bonsai File:Rhododendron_indicum_satuki01.jpg, Natural habitat File:Rhododendron_indicum2.jpg, Hedge References Bibliography The Linnaean Plant Name Typification Project: Azalea indica L. Steve Cafferty and Charles E. Jarvis. Typification of Linnaean ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
George Don
George Don (29 April 1798 – 25 February 1856) was a Scottish botanist and plant collector. Life and career George Don was born at Doo Hillock, Forfar, Angus, Scotland on 29 April 1798 to Caroline Clementina Stuart and George Don (b.1756), principal gardener of the Royal Botanic Garden Edinburgh in 1802. Don was the elder brother of David Don, also a botanist. He became foreman of the gardens at Chelsea in 1816. In 1821, he was sent to Brazil, the West Indies and Sierra Leone to collect specimens for the Royal Horticultural Society. Most of his discoveries were published by Joseph Sabine, although Don published several new species from Sierra Leone. Don's main work was his four volume ''A General System of Gardening and Botany'', published between 1832 and 1838 (often referred to as Gen. Hist., an abbreviation of the alternative title: ''A General History of the Dichlamydeous Plants''). He revised the first supplement to Loudon's ''Encyclopaedia of Plants'', and provided a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brachycalyx
''Rhododendron'' subsection ''Brachycalyx'' is a subsection of the genus ''Rhododendron'', in section ''Tsutsusi'', subgenus '' Azaleastrum'', consisting of fifteen species of Azaleas from Asia. Description Leaves deciduous In the fields of horticulture and Botany, the term ''deciduous'' () means "falling off at maturity" and "tending to fall off", in reference to trees and shrubs that seasonally shed leaves, usually in the autumn; to the shedding of petals, aft ..., pseudoverticillate, rhombic, crowded at the shoot apex and monomorphic, hairs usually confined to axils. Taxonomy The section ''Brachcalyx'' was first proposed by JC Tate based on the Chinese '' Rhododendron farrerae'', and described by Robert Sweet in 1831, in ''The British Flower Garden''. Species; * '' Rhododendron amagianum'' * '' Rhododendron decandrum'' * '' Rhododendron dilatatum'' * '' Rhododendron farrerae'' * '' Rhododendron hidakanum'' * '' Rhododendron kiyosumense'' * '' Rhododendron la ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhododendron Farrerae
''Rhododendron farrerae'', commonly known as Mrs. Farrer's rhododendron, is a deciduous rhododendron species native to China (Hong Kong, Hunan to Fujian), with violet flowers and reaching a height of 60 cm (2 ft.). It is the type species for subsection ''Brachycalyx ''Rhododendron'' subsection ''Brachycalyx'' is a subsection of the genus ''Rhododendron'', in section ''Tsutsusi'', subgenus '' Azaleastrum'', consisting of fifteen species of Azaleas from Asia. Description Leaves deciduous In the fields ...''. It is found in dense mountain forests at elevations of 800–2100 m. References Bibliography The Plant List: ''Rhododendron farrerae''Hirsutum.com External links * * farrerae Flora of China {{Ericaceae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leaf Shape
The following is a list of terms which are used to describe leaf morphology in the description and taxonomy of plants. Leaves may be simple (a single leaf blade or lamina) or compound (with several leaflets). The edge of the leaf may be regular or irregular, may be smooth or bearing hair, bristles or spines. For more terms describing other aspects of leaves besides their overall morphology see the leaf article. The terms listed here all are supported by technical and professional usage, but they cannot be represented as mandatory or undebatable; readers must use their judgement. Authors often use terms arbitrarily, or coin them to taste, possibly in ignorance of established terms, and it is not always clear whether because of ignorance, or personal preference, or because usages change with time or context, or because of variation between specimens, even specimens from the same plant. For example, whether to call leaves on the same tree "acuminate", "lanceolate", or "linear" could ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polymorphism (biology)
In biology, polymorphism is the occurrence of two or more clearly different morphs or forms, also referred to as alternative ''phenotypes'', in the population of a species. To be classified as such, morphs must occupy the same habitat at the same time and belong to a panmictic population (one with random mating). Ford E.B. 1965. ''Genetic polymorphism''. Faber & Faber, London. Put simply, polymorphism is when there are two or more possibilities of a trait on a gene. For example, there is more than one possible trait in terms of a jaguar's skin colouring; they can be light morph or dark morph. Due to having more than one possible variation for this gene, it is termed 'polymorphism'. However, if the jaguar has only one possible trait for that gene, it would be termed "monomorphic". For example, if there was only one possible skin colour that a jaguar could have, it would be termed monomorphic. The term polyphenism can be used to clarify that the different forms arise from the s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Adanson System
The Adanson system, published by French botanist Michel Adanson as the ''Familles des plantes'' in two volumes in 1763, was an important step in botanical nomenclature by establishing the ordering of genera into families. Michel Adanson listed 58 families, divided by sections, for the 1615 genera known to him. He gave these both French and Latin names. The system was completed by Antoine Laurent de Jussieu in 1789. Plant families Adanson's listing (Pages 1-7 of Part II) of families Family (from la, familia) is a group of people related either by consanguinity (by recognized birth) or affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its members and of society. Ideall ... is as follows (with page numbers of families together with sections and genera in parentheses).Note spelling varies throughout text. The detailed descriptions of families are separately paginated, and shown here in ''italics'', after the Latin names. Som ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Engelbert Kaempfer
Engelbert Kaempfer (16 September 16512 November 1716) was a German naturalist, physician, explorer and writer known for his tour of Russia, Persia, India, Southeast Asia, and Japan between 1683 and 1693. He wrote two books about his travels. ''Amoenitatum exoticarum'', published in 1712, is important for its medical observations and the first extensive description of Japanese plants (''Flora Japonica''). His ''History of Japan'', published posthumously in 1727, was the chief source of Western knowledge about the country throughout the 18th and mid-19th centuries, when it was closed to foreigners. Early life Kaempfer was born at Lemgo in the Principality of Lippe, within the Holy Roman Empire. His father was a pastor and his mother helped support the congregation. He studied at Hameln, Lüneburg, Hamburg, Lübeck and Danzig (Gdańsk), and after graduating at Kraków, spent four years at Königsberg in Prussia, studying medicine and natural science. Travels and studies Persi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Michel Adanson
Michel Adanson (7 April 17273 August 1806) was an 18th-century French botanist and naturalist who traveled to Senegal to study flora and fauna. He proposed a "natural system" of taxonomy distinct from the binomial system forwarded by Linnaeus. Personal history Adanson was born at Aix-en-Provence. His family moved to Paris in 1730. After leaving the Collège Sainte-Barbe he was employed in the cabinets of R. A. F. Réaumur and Bernard de Jussieu, as well as in the Jardin des Plantes, Paris. He attended lectures at the Jardin du Roi and the Collège Royal in Paris from 1741 to 1746. At the end of 1748, funded by a director of the Compagnie des Indes, he left France on an exploring expedition to Senegal. He remained there for five years, collecting and describing numerous animals and plants. He also collected specimens of every object of commerce, delineated maps of the country, made systematic meteorological and astronomical observations, and prepared grammars and dictionari ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
02.jpg "Click for more on -> Rhododendron Subsect")
.jpg "Click for more on -> Engelbert Kaempfer")