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Polypodiopteris
''Polypodiopteris'' is a genus of ferns in the family Polypodiaceae, subfamily Drynarioideae, according to the Pteridophyte Phylogeny Group classification of 2016 (PPG I). Taxonomy ''Polypodiopteris'' was first described by C.F. Reed in 1948. Species In the Pteridophyte Phylogeny Group classification of 2016 (PPG I), the genus has three species. , the ''Checklist of Ferns and Lycophytes of the World'' placed all three in a more broadly circumscribed genus '' Selliguea'': *'' Polypodiopteris brachypodia'' (Copel.) C.F.Reed *'' Polypodiopsis colorata'' (Copel.) Copel. *'' Polypodiopsis proavita'' (Copel.) Copel. , ''Plants of the World Online Plants of the World Online (POWO) is an online database published by the Royal Botanic Gardens, Kew. It was launched in March 2017 with the ultimate aim being "to enable users to access information on all the world's known seed-bearing plants by ...'' also sank the genus into ''Selliguea''. References Polypodiaceae Fern g ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polypodiopteris Brachypodia
''Polypodiopteris'' is a genus of ferns in the family Polypodiaceae, subfamily Drynarioideae, according to the Pteridophyte Phylogeny Group classification of 2016 (PPG I). Taxonomy ''Polypodiopteris'' was first described by C.F. Reed in 1948. Species In the Pteridophyte Phylogeny Group classification of 2016 (PPG I), the genus has three species. , the ''Checklist of Ferns and Lycophytes of the World'' placed all three in a more broadly circumscribed genus '' Selliguea'': *'' Polypodiopteris brachypodia'' (Copel.) C.F.Reed *'' Polypodiopsis colorata'' (Copel.) Copel. *'' Polypodiopsis proavita'' (Copel.) Copel. , ''Plants of the World Online Plants of the World Online (POWO) is an online database published by the Royal Botanic Gardens, Kew. It was launched in March 2017 with the ultimate aim being "to enable users to access information on all the world's known seed-bearing plants by ...'' also sank the genus into ''Selliguea''. References Polypodiaceae Fern g ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Drynarioideae
Drynarioideae is a subfamily of the fern family Polypodiaceae in the Pteridophyte Phylogeny Group classification of 2016 (PPG I). The subfamily is also treated as the tribe Drynarieae within a very broadly defined family Polypodiaceae ''sensu lato''. In either case, it includes the previously separated tribe Selligueeae. Drynarioideae combines the drynarioid and selligueoid ferns, which have been considered to be tribes (Drynarieae and Selligueeae) when the family Polypodiaceae was very broadly circumscribed. The genus count of neither of original tribes was certain, but the combined total could be at least nine.Christenhusz ''et al.'': A linear sequence of extant families and genera of lycophytes and ferns ''Phytotaxa'' 19: 7-54. (18 Feb. 20 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polypodiaceae
Polypodiaceae is a family of ferns. In the Pteridophyte Phylogeny Group classification of 2016 (PPG I), the family includes around 65 genera and an estimated 1,650 species and is placed in the order Polypodiales, suborder Polypodiineae. A broader circumscription has also been used, in which the family includes other families kept separate in PPG I. Nearly all species are epiphytes, but some are terrestrial. Description Stems of Polypodiaceae range from erect to long-creeping. The fronds are entire, pinnatifid, or variously forked or pinnate. The petioles lack stipules. The scaly rhizomes are generally creeping in nature. Polypodiaceae species are found in wet climates, most commonly in rain forests. In temperate zones, most species tend to be epiphytic or epipetric. Notable examples of ferns in this family include the resurrection fern (''Pleopeltis polypodioides'') and the golden serpent fern (''Phlebodium aureum''). Taxonomy Two distinct circumscriptions of the family are in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species
In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. Other ways of defining species include their karyotype, DNA sequence, morphology, behaviour or ecological niche. In addition, paleontologists use the concept of the chronospecies since fossil reproduction cannot be examined. The most recent rigorous estimate for the total number of species of eukaryotes is between 8 and 8.7 million. However, only about 14% of these had been described by 2011. All species (except viruses) are given a two-part name, a "binomial". The first part of a binomial is the genus to which the species belongs. The second part is called the specific name or the specific epithet (in botanical nomenclature, also sometimes i ... [...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] |
Pteridophyte Phylogeny Group
The Pteridophyte Phylogeny Group, or PPG, is an informal international group of systematic botanists who collaborate to establish a consensus on the classification of pteridophytes (lycophytes and ferns) that reflects knowledge about plant relationships discovered through phylogenetic studies. In 2016, the group published a classification for extant pteridophytes, termed "PPG I". The paper had 94 authors (26 principal and 68 additional). PPG I A first classification, PPG I, was produced in 2016, covering only extant (living) pteridophytes. The classification was rank-based, using the ranks of class, subclass, order, suborder, family, subfamily and genus. Phylogeny The classification was based on a consensus phylogeny, shown below to the level of order. The very large order Polypodiales was divided into two suborders, as well as families not placed in a suborder: Classification to subfamily level To the level of subfamily, the PPG I classification is as follows. *Class Lycopodi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clyde Franklin Reed
Clyde may refer to: People * Clyde (given name) * Clyde (surname) Places For townships see also Clyde Township Australia * Clyde, New South Wales * Clyde, Victoria * Clyde River, New South Wales Canada * Clyde, Alberta * Clyde, Ontario, a town in North Dumfries, Regional Municipality of Waterloo, Ontario * Clyde Township, a geographic township in the municipality of Dysart et al, Ontario * Clyde River, Nunavut New Zealand * Clyde, New Zealand ** Clyde Dam Scotland * Clydeside * River Clyde * Firth of Clyde United States * Clyde, California, a CDP in Contra Costa County * Clyde, Georgia * Clyde Township, Whiteside County, Illinois * Clyde, Iowa * Clyde, Kansas * Clyde, Michigan * Clyde Township, Allegan County, Michigan * Clyde Township, St. Clair County, Michigan * Clyde, New Jersey * Clyde, New York * Clyde, North Carolina * Clyde, North Dakota * Clyde, Ohio ** Clyde cancer cluster * Clyde, Pennsylvania * Clyde, South Carolina * Clyde, Texas * Clyde River (Verm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Circumscription (taxonomy)
In biological taxonomy, circumscription is the content of a taxon, that is, the delimitation of which subordinate taxa are parts of that taxon. If we determine that species X, Y, and Z belong in Genus A, and species T, U, V, and W belong in Genus B, those are our circumscriptions of those two genera. Another systematist might determine that T, U, V, W, X, Y, and Z all belong in genus A. Agreement on circumscriptions is not governed by the Codes of Zoological or Botanical Nomenclature, and must be reached by scientific consensus. A goal of biological taxonomy is to achieve a stable circumscription for every taxon. This goal conflicts, at times, with the goal of achieving a natural classification that reflects the evolutionary history of divergence of groups of organisms. Balancing these two goals is a work in progress, and the circumscriptions of many taxa that had been regarded as stable for decades are in upheaval in the light of rapid developments in molecular phylogenetics ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Selliguea
''Selliguea'' is a fern genus in the family Polypodiaceae. The type species is ''Selliguea feei''. Species list Species list taken from Hassler & Swale (2002). These are not necessarily accepted species. * '' Selliguea albicaula'' (Copel.) M.Kato & M.G.Price; Acta Phytotax. Geobot. 41(1-3): 72 (1990) * '' Selliguea albidopaleata'' (Copel.) Parris; Parris, R.S.Beaman & Beaman, Pl. Mt. Kinabalu, 1. Ferns & Fern Allies: 151 (1992) * '' Selliguea albidosquamata'' (Blume) Parris; Parris, R.S.Beaman & Beaman, Pl. Mt. Kinabalu, 1. Ferns & Fern Allies: 152 (1992) * '' Selliguea albopes'' (C. Chr. & Ching) S.G.Lu, Hovenkamp & M.G.Gilbert, Fl. China 2–3: 782 (2013) * '' Selliguea archboldii'' Copel.; Journ. Arnold Arbor. 24: 442 (1943) * '' Selliguea bakeri'' (Luerss.) Hovenkamp; Blumea 43: 90 (1998) * '' Selliguea balbi'' Hovenkamp; Blumea 43: 108 (1998) * '' Selliguea banaensis'' (C. Chr.) comb. ined. * '' Selliguea bellisquamata'' (C. Chr.) Hovenkamp; Blumea 43: 90 (1998) * '' Selligu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plants Of The World Online
Plants of the World Online (POWO) is an online database published by the Royal Botanic Gardens, Kew. It was launched in March 2017 with the ultimate aim being "to enable users to access information on all the world's known seed-bearing plants by 2020". The initial focus was on tropical African Floras, particularly Flora Zambesiaca, Flora of West Tropical Africa and Flora of Tropical East Africa. The database uses the same taxonomical source as Kew's World Checklist of Selected Plant Families, which is the International Plant Names Index, and the World Checklist of Vascular Plants (WCVP). POWO contains 1,234,000 global plant names and 367,600 images. See also *Australian Plant Name Index *Convention on Biological Diversity *World Flora Online *Tropicos Tropicos is an online botanical database containing taxonomic information on plants, mainly from the Neotropical realm (Central, and South America). It is maintained by the Missouri Botanical Garden and was established over 25 y ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
