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Lomariopsidaceae
The Lomariopsidaceae is a family of ferns with a largely tropical distribution. In the Pteridophyte Phylogeny Group classification of 2016 (PPG I), the family is placed in the suborder Polypodiineae (eupolypods I) of the order Polypodiales. Alternatively, it may be treated as the subfamily Lomariopsidoideae of a very broadly defined family Polypodiaceae ''sensu lato''. Genera The Pteridophyte Phylogeny Group classification of 2016 (PPG I) included four genera. ''Dryopolystichum'' was added in 2017, and ''Thysanosoria'' is now included in ''Lomariopsis'', so that four genera are recognized : *'' Cyclopeltis'' J.Sm. *'' Dracoglossum'' Christenh. *'' Dryopolystichum'' Copel. *'' Lomariopsis'' Fée (including ''Thysanosoria'') The genus '' Nephrolepis'' has also been placed in this family, but it is now placed in its own family, Nephrolepidaceae. Some members of the Lomariopsidaceae are cultivated as ornamental plants. Phylogeny The following cladogram for the suborder Poly ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polypodiales
The order Polypodiales encompasses the major lineages of polypod ferns, which comprise more than 80% of today's fern species. They are found in many parts of the world including tropical, semitropical and temperate areas. Description Polypodiales are unique in bearing sporangia with a vertical annulus interrupted by the stalk and stomium. These sporangial characters were used by Johann Jakob Bernhardi to define a group of ferns he called the "Cathetogyratae"; the Pteridophyte Phylogeny Group has suggested reviving this name as the informal term cathetogyrates, to replace the ambiguously circumscribed term "polypods" when referring to the Polypodiales. The sporangia are born on stalks 1–3 cells thick and are often long-stalked. (In contrast, the Hymenophyllales have a stalk composed of four rows of cells.) The sporangia do not reach maturity simultaneously. Many groups in the order lack indusia, but when present, they are attached either along the edge of the indusium or in its ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polypodiineae
Polypodiineae is a suborder of ferns in the order Polypodiales. It is equivalent to the clade eupolypods I in earlier systems, and to the very broadly defined family Polypodiaceae in the classification of Christenhusz & Chase (2014). It probably diverged from the suborder Aspleniineae (eupolypods II) during the mid-Cretaceous. The divergence is supported by both molecular data and an often overlooked morphological characteristic which lies in the vasculature of the petiole. Most species that make up the suborder have three vascular bundles. The only exceptions are the grammitid ferns which have one, and the genus '' Hypodematium'' which has two. This differs from eupolypods II which mostly have two vascular bundles (except the well-nested blechnoid ferns which generally have at least three). Taxonomy In the Pteridophyte Phylogeny Group classification of 2016 (PPG I), the group is treated as the suborder Polypodiineae, and divided into 11 families. Alternatively, it may be trea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dryopolystichum
''Dryopolystichum'' is a genus of ferns in the family Lomariopsidaceae, with a single species ''Dryopolystichum phaeostigma''. Taxonomy The genus ''Dryopolystichum'' was first erected by Edwin Copeland in 1947 for the species ''Aspidium phaeostigma''. In the Pteridophyte Phylogeny Group classification of 2016 (PPG I), the genus was placed in the family Dryopteridaceae, although left unplaced as to subfamily. It has since been transferred to the family Lomariopsidaceae as a result of molecular phylogenetic Molecular phylogenetics () is the branch of phylogeny that analyzes genetic, hereditary molecular differences, predominantly in DNA sequences, to gain information on an organism's evolutionary relationships. From these analyses, it is possible to ... evidence. References Polypodiales Monotypic fern genera Taxa named by Vincenzo de Cesati {{Polypodiales-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dracoglossum
''Dracoglossum'' is a small genus of ferns in the family Lomariopsidaceae, according to the Pteridophyte Phylogeny Group classification of 2016 (PPG I). It is native to the Neotropics of the Americas. Taxonomy ''Dracoglossum'' was originally treated in ''Tectaria'', but is not related and was therefore placed in the family Dryopteridaceae. It appears to be most closely related to the genus '' Lomariopsis''.Maarten J.M. Christenhusz. 2007. "''Dracoglossum'', a new Neotropical fern genus (Pteridophyta)". ''Thaiszia Journal of Botany'' 17:1-10. (See ''External links'' below). Molecular evidence has confirmed this placement and it is now firmly placed in family Lomariopsidaceae, with which it shares characters of habit and stelar structure. Species , the ''Checklist of Ferns and Lycophytes of the World'' and ''Plants of the World Online'' recognized two species: *'' Dracoglossum plantagineum'' (Jacq.) Christenh. — Central America, the Lesser Antilles, Puerto Rico, and sub-Ande ... [...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] |
Lomariopsis Marginata
''Lomariopsis marginata'' is a fern in the family Lomariopsidaceae. It is native to Brazil and possibly French Guiana French Guiana ( or ; french: link=no, Guyane ; gcr, label=French Guianese Creole, Lagwiyann ) is an overseas departments and regions of France, overseas department/region and single territorial collectivity of France on the northern Atlantic .... References Polypodiales {{Polypodiales-stub ... [...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] |
Lomariopsis
''Lomariopsis'' is the type genus of the fern family Lomariopsidaceae. One economically important species exists only as an aquatic gametophyte form, commonly known as '' süsswassertang''. This species is closely allied to '' Lomariopsis lineata'' but has not yet been named as a species. Species , the ''Checklist of Ferns and Lycophytes of the World'' recognized the following species: *'' Lomariopsis amydrophlebia'' ( Sloss. ex Maxon) Holttum *'' Lomariopsis boivinii'' Holttum *'' Lomariopsis boninensis'' Nakai *'' Lomariopsis brackenridgei'' Carruth. *'' Lomariopsis chinensis'' Ching *'' Lomariopsis christensenii'' Rakotondr. *'' Lomariopsis commersonii'' Rakotondr. *'' Lomariopsis congoensis'' Holttum *'' Lomariopsis cordata'' (Bonap.) Alston *'' Lomariopsis crassifolia'' Holttum *'' Lomariopsis decrescens'' (Baker) Kuhn * ''Lomariopsis'' × ''farrarii'' R.C.Moran & J.E.Watkins *'' Lomariopsis fendleri'' D.C.Eaton *'' Lomariopsis guineensis'' (Underw.) Alston *'' Lomariopsi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cyclopeltis
''Cyclopeltis'' is a genus of ferns in the family Lomariopsidaceae according to the Pteridophyte Phylogeny Group classification of 2016 (PPG I). Taxonomy ''Cyclopeltis'' was first described by John Smith in 1846. Species , the ''Checklist of Ferns and Lycophytes of the World'' and ''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 ...'' recognized the following species: *'' Cyclopeltis crenata'' (Fée) C.Chr. *'' Cyclopeltis kingii'' (Hance) Hosok. *'' Cyclopeltis mirabilis'' Copel. *'' Cyclopeltis novoguineensis'' Rosenst. *'' Cyclopeltis presliana'' (J.Sm.) Berk. *'' Cyclopeltis rigida'' Holttum *'' Cyclopeltis semicordata'' (Sw.) J.Sm. References Polypodiales Fern genera {{Polypodiales-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tropical
The tropics are the regions of Earth surrounding the Equator. They are defined in latitude by the Tropic of Cancer in the Northern Hemisphere at N and the Tropic of Capricorn in the Southern Hemisphere at S. The tropics are also referred to as the tropical zone and the torrid zone (see geographical zone). In terms of climate, the tropics receive sunlight that is more direct than the rest of Earth and are generally hotter and wetter as they aren't affected as much by the solar seasons. The word "tropical" sometimes refers to this sort of climate in the zone rather than to the geographical zone itself. The tropical zone includes deserts and snow-capped mountains, which are not tropical in the climatic sense. The tropics are distinguished from the other climatic and biomatic regions of Earth, which are the middle latitudes and the polar regions on either side of the equatorial zone. The tropics constitute 40% of Earth's surface area and contain 36% of Earth's landmass. , the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arthur Hugh Garfit Alston
Arthur Hugh Garfit Alston (born in West Ashby on 4 September 1902; died in Barcelona on 17 March 1958) was an English botanist. His father was a vicar and amateur naturalist who first got him interested in the field. A.H.G. Alston later received his B.A. from the University of Oxford. He went on to work at the Royal Botanic Gardens, Kew and the colonial Department of Agriculture in Ceylon. He joined the Linnean Society of London in 1927. This botanist is denoted by the author abbreviation when citing a botanical name A botanical name is a formal scientific name conforming to the '' International Code of Nomenclature for algae, fungi, and plants'' (ICN) and, if it concerns a plant cultigen, the additional cultivar or Group epithets must conform to the ''Intern .... References 1902 births 1958 deaths Alumni of Lincoln College, Oxford Botanists with author abbreviations Fellows of the Linnean Society of London People from East Lindsey District 20th-century British ... [...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] |
