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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 (biology), 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 sorus, sori are round, with a peltate indusium. The Stipe (botany), stipes have prominent scales. Hybrid (biology)#Hybrid plants, Hybridization and polypl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dryopteris Amurensis
:''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 form ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
North American Dryopteris Hybrid Complex
Hybridization and polyploidy are common phenomena in ferns, and the genus ''Dryopteris'' is known to be one of the most freely-hybridizing fern genera. North American botanists recognized early that there were close relationships between many of the species of ''Dryopteris'' on the continent, and that these relationships reflected hybrid ancestry. The complex includes six sexual diploid parents (one of which, "''D. semicristata"'', is hypothesized to be extinct), six sexual allopolyploids, and numerous sterile hybrids at various ploidal levels. Diploid species *'' Dryopteris intermedia'' *'' Dryopteris expansa'' *'' Dryopteris goldieana'' *'' Dryopteris ludoviciana'' *'' Dryopteris marginalis'' *''Dryopteris "semicristata"'' Allopolyploid species *''Dryopteris carthusiana'' (''D. intermedia'' × ''"D. semicristata"''; allotetraploid) *'' Dryopteris campyloptera'' (''D. intermedia'' × ''D. expansa''; allotetraploid) *'' Dryopteris celsa'' (''D. goldieana'' × ''D. ludoviciana''; ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dryopteris Filix-mas
''Dryopteris filix-mas'', the male fern, is a common fern of the temperateness, temperate Northern Hemisphere, native plant, native to much of Europe, Asia, and North America. It favours damp shaded areas in the understory of woodlands, but also shady places on hedge-banks, and rocks, and screes. Near the northern limit of its distribution it prefers sunny, well-drained sites. It is much less abundant in North America than in Europe. Description The semi-evergreen leaves have an upright habit and reach a maximum length of , with a single crown on each rootstock. The pinnate, bipinnate leaves consist of 20–35 pinnae on each side of the rachis. The leaves taper at both ends, with the basal pinnae about half the length of the middle pinnae. The pinules are rather blunt and equally lobed all around. The stalks are covered with orange-brown scales. On the abaxial surface of the mature blade five or six Sorus, sori develop in two rows. When the spores ripen in August to November, th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dryopteris Affinis
''Dryopteris affinis'', the scaly male fern or golden-scaled male fern, is a fern native to western and southern Europe and southwestern Asia. It is most abundant on moist soils in woodlands in areas with high humidity, such as the British Isles and western France. In the Mediterranean region and the Caucasus it is confined to high altitudes. Description ''Dryopteris affinis'' is virtually evergreen and bears light green fronds long, moderately stiff and hard-textured, the rachis at the base of the frond densely covered in yellow-brown scales known as ramenta. The frond is bipinnate, the pinnae up to long, the pinnules broad rectangular with the margin most toothed close to the pinna tip. There is a blackish spot at the base of the pinna where it joins the rachis. Individual fronds live for about 1.5 years and remain attached to the rhizome after withering. ''D. affinis'' is closely related to ''Dryopteris filix-mas'', distinguished by its usually more robust habit with usually ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dryopteris Arguta
''Dryopteris arguta'', with the common name coastal woodfern, is a species of Dryopteris, wood fern. It is native to the west coast and western interior mountain ranges of North America, from British Columbia, throughout California, and into Arizona. It grows between sea level and . It is found in California mixed evergreen forest, mixed evergreen forests, California oak woodland, oak woodlands, and shady lower elevation slopes in California chaparral and woodlands, chaparral and woodlands habitats. Description ''Dryopteris arguta'' is somewhat variable in appearance. Leaflets sometimes turn at an angle from the leaf, giving it a ruffled or lacy look, and the toothed leaflets may have bristles at their tips. According to C. Michael Hogan, the thin concave indusium, indusia are quite closely spaced and almost entirely cover the sporangia.C. Michael Hogan. 2008''Coastal Woodfern (Dryopteris arguta)'', GlobalTwitcher, ed. N. Stromberg References External linksJepson Manual — ' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
