Shield Fern

	Shield Fern Shield fern is a common name for ferns in several genera and may refer to: '' Dryopteris'' ''Lastreopsis'' '' Polystichum'' ''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 ...'' {{Short pages monitor Dryopteridaceae ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Dryopteris :''The moth genus ''Dryopteris'' is now considered a junior synonym of '' Oreta. ''Dryopteris'' , commonly called the wood ferns, male ferns (referring in particular to ''Dryopteris filix-mas''), or buckler ferns, is a fern genus in the family Dryopteridaceae, subfamily Dryopteridoideae, according to the Pteridophyte Phylogeny Group classification of 2016 (PPG I). There are about 300-400 species in the genus. The species are distributed in Asia, the Americas, Europe, Africa, and the Pacific islands, with the highest diversity in eastern Asia. It is placed in the family Dryopteridaceae, subfamily Dryopteridoideae, according to the Pteridophyte Phylogeny Group classification of 2016 (PPG I). Many of the species have stout, slowly creeping rootstocks that form a crown, with a vase-like ring of fronds. The sori are round, with a peltate indusium. The stipes have prominent scales. Hybridization and polyploidy are well-known phenomena in this group, with many species forme ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Lastreopsis ''Lastreopsis'', known as shieldfern, is a genus of ferns in the family Dryopteridaceae, subfamily Elaphoglossoideae, in the 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 relatio ... classification of 2016 (PPG I). Species , the ''Checklist of Ferns and Lycophytes of the World'' accepted the following species: '' Lastreopsis amplissima'' (C.Presl) Tindale '' Lastreopsis davalliaeformis'' (Tardieu) Tardieu '' Lastreopsis davallioides'' (Brack.) Tindale '' Lastreopsis decomposita'' (R.Br.) Tindale '' Lastreopsis dissecta'' (C.T.White & Goy) Labiak, Sundue & R.C.Moran '' Lastreopsis hispida'' (Sw.) Tindale '' Lastreopsis killipii'' (C.Chr. & Maxon) Tindale '' Lastreopsis marginans'' (F.Muell.) D.A.Sm. & Tindale ex Tindale '' Lastreopsis nephrodioides'' ... [...More Info...] [...Related Items...] OR:* [Wikipedia] [Google] [Baidu]
	Polystichum ''Polystichum'' is a genus of ferns in the family Dryopteridaceae, subfamily Dryopteridoideae, according to the Pteridophyte Phylogeny Group classification of 2016 (PPG I). The genus has about 500 species and has a cosmopolitan distribution. The highest diversity is in eastern Asia, with about 208 species in China alone; the region from Mexico to Brazil has at least 100 additional species; Africa (at least 17 species), North America (at least 18 species), and Europe (at least 5 species) have much lower diversity. ''Polystichum'' species are terrestrial or rock-dwelling ferns of warm-temperate and montane-tropical regions (a few species grow in alpine regions). They are often found in disturbed habitats such as road cuts, talus slopes, and stream banks. Description Many ferns of this genus have stout, slowly creeping rootstocks that form a crown, with a vase-like ring of evergreen fronds long. The sori are round, with a circular indusium, except in South American species which l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	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 classification of 2016 (PPG I), the genus is a very small one with about two species. In other approaches, the genus is the only one in the subfamily Thelypteridoideae, and so includes between 875 and 1083 species. The genus name is from Greek ''thēlys'' "female" and ''pteris'' "fern". However, "female fern" usually refers to the common lady-fern. Taxonomy At one time, all thelypterioid ferns were included in the genus ''Dryopteris'' because of the sorus shape. However, there are a great many differences between the groups, and these plants are now segregated in their own family. Some researchers include the entire family Thelypteridaceae in the genus ''Thelypteris''. An intermediate position is to place the bulk in ''Thelypteris'' (correspo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]