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Phegopteridoideae
Thelypteridaceae is a family of about 900 species of ferns in the order Polypodiales. In the Pteridophyte Phylogeny Group classification of 2016 (PPG I), it is placed in the suborder Aspleniineae. Alternatively, the family may be submerged in a very broadly defined family Aspleniaceae as the subfamily Thelypteridoideae. The ferns are terrestrial, with the exception of a few which are lithophytes (grow on rocks). The bulk of the species are tropical, although there are a number of temperate species. These ferns typically have creeping rhizomes. The fronds are simply pinnate to pinnate- pinnatifid. There is either no frond dimorphism or only mild dimorphism, either open venation or very simple anastomosing. The sori are mostly reniform in shape and have indusia, except for the ''Phegopteris'' group. Classification During the early and mid 1900's all thelypterioid ferns were included in the genus '' Dryopteris'' because of the sorus shape. However, there are a great m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phegopteris
''Phegopteris'' is a genus of ferns in the family Thelypteridaceae, subfamily Phegopteridoideae, in the Pteridophyte Phylogeny Group classification of 2016 (PPG I). They are known collectively as the beech ferns. Species are native to Asia, North America and Europe. Taxonomy ''Phegopteris'' was first described in 1852 by Carl Borivoj Presl as an unranked taxon within the genus ''Polypodium''. It was raised to the rank of genus by Antoine Fée in the same year. The Pteridophyte Phylogeny Group classification of 2016 (PPG I) recognizes three genera in the subfamily Phegopteridoideae: '' Macrothelypteris'', ''Phegopteris'' and ''Pseudophegopteris''. , both the ''Checklist of Ferns and Lycophytes of the World'' and '' Plants of the World Online'' regarded ''Pseudophegopteris'' as a synonym of ''Phegopteris''. Species , the ''Checklist of Ferns and Lycophytes of the World'' accepted the following species: *'' Phegopteris andringitrensis'' (Rakotondr.) Christenh. *'' Phegopteris au ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pseudophegopteris
''Phegopteris'' is a genus of ferns in the family Thelypteridaceae, subfamily Phegopteridoideae, in the Pteridophyte Phylogeny Group classification of 2016 (PPG I). They are known collectively as the beech ferns. Species are native to Asia, North America and Europe. Taxonomy ''Phegopteris'' was first described in 1852 by Carl Borivoj Presl as an unranked taxon within the genus ''Polypodium''. It was raised to the rank of genus by Antoine Fée in the same year. The Pteridophyte Phylogeny Group classification of 2016 (PPG I) recognizes three genera in the subfamily Phegopteridoideae: ''Macrothelypteris'', ''Phegopteris'' and ''Pseudophegopteris''. , both the ''Checklist of Ferns and Lycophytes of the World'' and ''Plants of the World Online'' regarded ''Pseudophegopteris'' as a synonym of ''Phegopteris''. Species , the ''Checklist of Ferns and Lycophytes of the World'' accepted the following species: *'' Phegopteris andringitrensis'' (Rakotondr.) Christenh. *'' Phegopteris auber ... [...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] |
Macrothelypteris
''Macrothelypteris'' is a genus of ferns in the family Thelypteridaceae, subfamily Phegopteridoideae, in the Pteridophyte Phylogeny Group classification of 2016 (PPG I). The genus name means 'large ''Thelypteris'''. 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 ...'' (POWO) listed the following species and one hybrid: *'' Macrothelypteris banaensis'' (Tardieu & C.Chr.) Christenh. *'' Macrothelypteris contingens'' Ching *'' Macrothelypteris multiseta'' (Baker) Ching *'' Macrothelypteris ogasawarensis'' (Nakai) Holttum *'' Macrothelypteris oligophlebia'' (Baker) Ching – treated as a synonym of ''Macrothelypteris torresiana'' in POWO *'' Macrothelypteris ornata'' (J.Sm.) Ching *'' Macr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cyclosorus
''Cyclosorus'' is a genus of ferns in the family Thelypteridaceae, subfamily Thelypteridoideae, in the Pteridophyte Phylogeny Group classification of 2016 (PPG I). Other sources sink ''Cyclosorus'' into a very broadly defined genus ''Thelypteris ''Thelypteris'' (maiden ferns) is a genus of ferns in the subfamily Thelypteridoideae, family Thelypteridaceae, order Polypodiales. Two radically different circumscriptions of the genus are in use . In the Pteridophyte Phylogeny Group classific ...'', or expand the genus to include other genera which PPG I keeps separate. Thus the online ''Flora of China'' suggests there are about 250 species compared to the two species suggested in PPG I. There are also fossil species known from the Eocene of South China and the Quaternary of Australia. The genus is named from the Greek, referring to the circular sori.Les Robinson - Field Guide to the Native Plants of Sydney, page 320 Species , the ''Checklist of Ferns and Lycophytes of the Worl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genetics
Genetics is the study of genes, genetic variation, and heredity in organisms.Hartl D, Jones E (2005) It is an important branch in biology because heredity is vital to organisms' evolution. Gregor Mendel, a Moravian Augustinian friar working in the 19th century in Brno, was the first to study genetics scientifically. Mendel studied "trait inheritance", patterns in the way traits are handed down from parents to offspring over time. He observed that organisms (pea plants) inherit traits by way of discrete "units of inheritance". This term, still used today, is a somewhat ambiguous definition of what is referred to as a gene. Trait inheritance and molecular inheritance mechanisms of genes are still primary principles of genetics in the 21st century, but modern genetics has expanded to study the function and behavior of genes. Gene structure and function, variation, and distribution are studied within the context of the cell, the organism (e.g. dominance), and within the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stegnogramma
''Stegnogramma'' is a genus of ferns in the subfamily Thelypteridoideae of the family Thelypteridaceae in the Pteridophyte Phylogeny Group classification of 2016 (PPG I). Other sources sink ''Stegnogramma'' into a very broadly defined genus ''Thelypteris ''Thelypteris'' (maiden ferns) is a genus of ferns in the subfamily Thelypteridoideae, family Thelypteridaceae, order Polypodiales. Two radically different circumscriptions of the genus are in use . In the Pteridophyte Phylogeny Group classific ...''. Species , the ''Checklist of Ferns and Lycophytes of the World'' accepted the following species: *'' Stegnogramma amabilis'' (Tagawa) Nakaike *'' Stegnogramma aspidioides'' Blume *'' Stegnogramma burksiorum'' (J.E.Watkins & Farrar) Weakley *'' Stegnogramma calcicola'' Co *'' Stegnogramma celebica'' (Ching) Holttum *'' Stegnogramma centrochinensis'' (Ching ex Y.X.Lin) comb. ined. *'' Stegnogramma crenata'' Holttum *'' Stegnogramma cyrtomioides'' (C.Chr.) Ching *'' Stegnogramma d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cyclogramma
''Cyclogramma'' is a genus of ferns in the family Thelypteridaceae, subfamily Thelypteridoideae, in the Pteridophyte Phylogeny Group classification of 2016 (PPG I). Other sources sink ''Cyclogramma'' into a very broadly defined genus ''Thelypteris ''Thelypteris'' (maiden ferns) is a genus of ferns in the subfamily Thelypteridoideae, family Thelypteridaceae, order Polypodiales. Two radically different circumscriptions of the genus are in use . In the Pteridophyte Phylogeny Group classific ...''. Species , the ''Checklist of Ferns and Lycophytes of the World'' accepted the following species: *'' Cyclogramma auriculata'' (J.Sm.) Ching *'' Cyclogramma chunii'' (Ching) Tagawa *'' Cyclogramma costularisora'' Ching ex K.H.Shing *'' Cyclogramma flexilis'' (Christ) Tagawa *'' Cyclogramma leveillei'' (Christ) Ching *'' Cyclogramma maguanensis'' Ching ex K.H.Shing *'' Cyclogramma neoauriculata'' (Ching) Tagawa *'' Cyclogramma omeiensis'' (Baker) Tagawa *'' Cyclogramma squamaestipes'' ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oreopteris
''Oreopteris'' is a genus of ferns belonging to the family Thelypteridaceae. The species of this genus are found in Eurasia and Northern America. Species: * '' Oreopteris elwesii'' (Baker ex Hook. & Baker) Holttum * ''Oreopteris limbosperma ''Oreopteris'' is a genus of ferns belonging to the family Thelypteridaceae. The species of this genus are found in Eurasia and Northern America. Species: * '' Oreopteris elwesii'' (Baker ex Hook. & Baker) Holttum * ''Oreopteris limbosperma ...'' (All.) Holub References Thelypteridaceae Fern genera {{Polypodiales-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amauropelta
''Amauropelta'' is a genus of ferns in the family Thelypteridaceae, subfamily Thelypteridoideae, in the Pteridophyte Phylogeny Group classification of 2016 (PPG I). Other sources sink the genus into a very broadly defined genus ''Thelypteris''. Species , the ''Checklist of Ferns and Lycophytes of the World'' accepted the following species: *'' Amauropelta abbottiana'' (Maxon) comb. ined. *'' Amauropelta achalensis'' (Hieron.) Salino & T.E.Almeida *'' Amauropelta aculeata'' (A.R.Sm.) Salino & T.E.Almeida *'' Amauropelta acunae'' (C.Sánchez & Zavaro) Salino & T.E.Almeida *'' Amauropelta aequatorialis'' (Copel.) comb. ined. *'' Amauropelta aliena'' (C.Chr.) Salino & T.E.Almeida *'' Amauropelta altitudinis'' (Ponce) Salino & T.E.Almeida *'' Amauropelta amambayensis'' (Ponce) Salino & T.E.Almeida *'' Amauropelta amphioxypteris'' (Sodiro) Salino & T.E.Almeida *'' Amauropelta andicola'' (A.R.Sm.) Salino & T.E.Almeida *''Amauropelta appressa'' (A.R.Sm.) Salino & T.E.Almeida *'' Amaurop ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
