|
Osmunda Spectabilis
''Osmunda spectabilis'', known as American royal fern, is a species of fern native to a large area of the New World, from the eastern half of Canada and the United States to Argentina. Description ''Osmunda spectabilis'' is an easy fern to recognize in the New World flora. Although it closely resembles species '' O. regalis'', '' O. japonica'', and '' O. lancea'', only ''O. spectabilis'' is found growing naturally in the New World. The fronds of ''O. spectabilis'' can exceed 1 meter in length and are bipinnate. The pinnules are attached by a very narrow base. The plant produces separate sterile and fertile fronds. Fertile fronds are similar to the sterile fronds, in the lower and middle portions, but the top-most pinnae are fertile and they are much reduced and brown when mature in the early summer. Distribution and habitat American royal fern is most commonly found growing in wetter soils such as those found in wet forests, bogs, and along streams and lakes. Taxonomy ''Osmun ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fern
A fern (Polypodiopsida or Polypodiophyta ) is a member of a group of vascular plants (plants with xylem and phloem) that reproduce via spores and have neither seeds nor flowers. The polypodiophytes include all living pteridophytes except the lycopods, and differ from mosses and other bryophytes by being vascular, i.e., having specialized tissues that conduct water and nutrients and in having life cycles in which the branched sporophyte is the dominant phase. Ferns have complex leaves called megaphylls, that are more complex than the microphylls of clubmosses. Most ferns are leptosporangiate ferns. They produce coiled fiddleheads that uncoil and expand into fronds. The group includes about 10,560 known extant species. Ferns are defined here in the broad sense, being all of the Polypodiopsida, comprising both the leptosporangiate (Polypodiidae) and eusporangiate ferns, the latter group including horsetails, whisk ferns, marattioid ferns, and ophioglossoid ferns. Ferns first ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Osmunda Regalis
''Osmunda regalis'', or royal fern, is a species of deciduous fern, native to Europe, Africa and Asia, growing in woodland bogs and on the banks of streams. The species is sometimes known as flowering fern due to the appearance of its fertile fronds. Names The name ''Osmunda'' possibly derives from ''Osmunder'', a Saxon name for the god Thor. The name "royal fern" derives from its being one of the largest and most imposing European ferns. The name has been qualified as "old world royal fern" in some American literature to distinguish it from the closely related American royal fern, '' O. spectabilis''. However this terminology is not found in British literature. Description ''Osmunda regalis'' produces separate fertile and sterile fronds. The sterile fronds are spreading, tall and broad, bipinnate, with 7-9 pairs of pinnae up to long, each pinna with 7-13 pairs of pinnules 2.5-6.5 cm long and 1–2 cm broad. The fertile fronds are erect and shorter, 20–50 cm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Osmunda Japonica
''Osmunda japonica'' (syn. ''Osmunda nipponica'' Makino), also called Asian royal fern, is a fern in the genus ''Osmunda'' native to east Asia, including Japan, China, Korea, Taiwan, and the far east of Russia on the island of Sakhalin. It is called ''gobi'' () in Korean, ''zenmai'' (; ) in Japanese, and ''zǐqí'' or ''juécài'' ( or ) in Chinese. It is a deciduous herbaceous plant which produces separate fertile and sterile fronds. The sterile fronds are spreading, up to 80–100 cm tall, bipinnate, with pinnae 20–30 cm long and pinnules 4–6 cm long and 1.5–2 cm broad; the fertile fronds are erect and shorter, 20–50 cm tall. It grows in moist woodlands and can tolerate open sunlight only if in very wet soil. Like other ferns, it has no flowers, but rather elaborate sporangia, that very superficially might suggest a flower, from which the alternative name derives. Like its relative ''Osmundastrum cinnamomeum'' ("cinnamon fern"), the fertile f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Osmunda Lancea
''Osmunda lancea'' is a fern in the genus ''Osmunda'', section ''Euosmunda''. It is found in Japan. It often hybridizes with ''Osmunda japonica ''Osmunda japonica'' (syn. ''Osmunda nipponica'' Makino), also called Asian royal fern, is a fern in the genus ''Osmunda'' native to east Asia, including Japan, China, Korea, Taiwan, and the far east of Russia on the island of Sakhalin. It is ca ...'' to produce ''O.'' × ''intermedia''. References External linkspicture Osmundales Ferns of Asia {{Polypodiidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Osmunda
''Osmunda'' is a genus of primarily temperate-zone ferns of family Osmundaceae. Five to ten species have been listed for this genus. Description Completely dimorphic fronds or pinnae (hemidimorphic), green photosynthetic sterile fronds, and non-photosynthetic spore-bearing fertile pinnae, with large, naked sporangia. Because of the large mass of sporangia that ripen uniformly at the same time to a showy golden color, the ferns look as if they are in flower, and so this genus is sometimes called the "flowering ferns". Taxonomy ''Osmunda'', the type genus of the fern order, Osmundales has historically been the largest genus in the family Osmundaceae. Smith et al. (2006), who carried out the first higher-level pteridophyte classification published in the molecular phylogenetic era, described three genera in that family, namely ''Osmunda'', ''Leptopteris'', and ''Todea''. The genus has also been treated historically as consisting of a number of subgroups, generally subgenera, ''Os ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Osmunda Claytoniana
''Claytosmunda'' is a genus of fern. It has only one extant species, ''Claytosmunda claytoniana'' ( synonym ''Osmunda claytoniana''), the interrupted fern, native to Eastern Asia, Eastern United States, and Eastern Canada. The specific epithet is named after the English-born Virginian botanist John Clayton. "Interrupted" describes the gap in middle of the blade left by the fertile portions after they wither and eventually fall off. The plant is known from fossils to have grown in Europe, showing a previous circumboreal distribution. Fragmentary foliage resembling ''Claytosmunda'' has been found in the fossil record as far back as the Triassic. Description ''Claytosmunda claytoniana'' fronds are bipinnate, tall and broad, the blade formed of alternate segments forming an arching blade tightening to a pointed end. The lower end is also slightly thinner than the rest of the frond because the first segments are shorter. Three to seven short, cinnamon-colored fertile segments ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Osmunda Javanica
''Plenasium javanicum'' is a fern in the family Osmundaceae. The genus ''Plenasium'' is recognized in the Pteridophyte Phylogeny Group classification of 2016 (PPG I); however, some sources place all ''Plenasium'' species in a more broadly defined ''Osmunda'', treating this species as ''Osmunda javanica''. It has a wide native distribution in south-eastern Asia, being found in the Eastern Himalaya, south-central and south east China (including Hainan), Indochina, the Philippines, Borneo, Sumatra, Sulawesi and Java Java (; id, Jawa, ; jv, ꦗꦮ; su, ) is one of the Greater Sunda Islands in Indonesia. It is bordered by the Indian Ocean to the south and the Java Sea to the north. With a population of 151.6 million people, Java is the world's List .... References Osmundales Flora of East Himalaya Flora of South-Central China Flora of Southeast China Flora of Hainan Flora of Indo-China Flora of Malesia Plants described in 1828 {{Polypodiidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Osmunda Banksiifolia
''Plenasium banksiifolium'' is a fern in the family Osmundaceae. The genus ''Plenasium'' is recognized in the Pteridophyte Phylogeny Group classification of 2016 (PPG I); however, some sources place all ''Plenasium'' species in a more broadly defined ''Osmunda'', treating this species as ''Osmunda banksiifolia''. It is native along the Pacific coast of Asia, being found in the Kamchatka Peninsula, the Ryukyu Islands, Japan, southeast China, Taiwan, the Philippines, Borneo, Sulawesi and Java Java (; id, Jawa, ; jv, ꦗꦮ; su, ) is one of the Greater Sunda Islands in Indonesia. It is bordered by the Indian Ocean to the south and the Java Sea to the north. With a population of 151.6 million people, Java is the world's List .... ''P. banksiifolium'', which can reach a height of 1.5 m, is the largest species in the genus and has ornamental value. Description The appearance of the fertile pinnae are very different from that of the sterile pinnae, the fertile pin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Osmunda Vachellii
''Plenasium vachellii'' is a fern in the family Osmundaceae. The genus ''Plenasium'' is recognized in the Pteridophyte Phylogeny Group classification of 2016 (PPG I); however, some sources place all ''Plenasium'' species in a more broadly defined ''Osmunda'', treating this species as ''Osmunda vachellii''. It is native to south-central and southeast China (including Hainan) and Indochina Mainland Southeast Asia, also known as the Indochinese Peninsula or Indochina, is the continental portion of Southeast Asia. It lies east of the Indian subcontinent and south of Mainland China and is bordered by the Indian Ocean to the west an ... (the Malayan peninsula, Myanmar, Thailand and Vietnam). References Osmundales Flora of South-Central China Flora of Southeast China Flora of Hainan Flora of Indo-China {{Polypodiidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Osmunda Angustifolia
''Plenasium angustifolium'' is a fern in the family Osmundaceae. The genus ''Plenasium'' is recognized in the Pteridophyte Phylogeny Group classification of 2016 (PPG I); however, some sources place all ''Plenasium'' species in a more broadly defined ''Osmunda ''Osmunda'' is a genus of primarily temperate-zone ferns of family Osmundaceae. Five to ten species have been listed for this genus. Description Completely dimorphic fronds or pinnae (hemidimorphic), green photosynthetic sterile fronds, and no ...'', treating this species as ''Osmunda angustifolia''. It is native to eastern Thailand, Laos and southern China (Hainan, Guangdong, Hong Kong, Hunan), and has been introduced into India and Sri Lanka. References Osmundales Flora of China Flora of Laos Flora of Thailand {{Polypodiidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Osmunda Bromeliifolia
''Plenasium banksiifolium'' is a fern in the Family (biology), family Osmundaceae. The genus ''Plenasium'' is recognized in the Pteridophyte Phylogeny Group classification of 2016 (PPG I); however, some sources place all ''Plenasium'' species in a more broadly defined ''Osmunda'', treating this species as ''Osmunda banksiifolia''. It is native along the Pacific coast of Asia, being found in the Kamchatka Peninsula, the Ryukyu Islands, Japan, southeast China, Taiwan, the Philippines, Borneo, Sulawesi and Java. ''P. banksiifolium'', which can reach a height of 1.5 m, is the largest species in the genus and has ornamental value. Description The appearance of the fertile pinnae are very different from that of the sterile pinnae, the fertile pinnae are curled. The sporangia can also grow on the vegetative pinnae immediately above and below the fertile pinnae, with a compact shape; so we might say that P. banksiifolium has three types of pinnae: fertile, sterile, and semi-ferti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
