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Dryopteris Shibipedis
''Dryopteris shibpedis'' is a species of fern native Japan that was declared extinct in 2007, that has since been rediscovered in the Tsukuba Botanical Garden. Despite rediscovery, ''D. shibipedis'' is still ranked as extinct in the wild. Biological origin and reproduction Originating from the family Dryopteridaceae The Dryopteridaceae are a Family (biology), family of leptosporangiate ferns in the Order (biology), order Polypodiales. They are known Common name, colloquially as the wood ferns. In the Pteridophyte Phylogeny Group classification of 2016 (PPG&n ..., or wood ferns, the ''Dryopteris shibipedis'' is thought to be a "hybridization between a sexual tetraploid providing a diploid egg and an apogamous diploid providing a diploid sperm." This meaning, the fern itself is considered a tetraploid—having four sets of chromosomes, develops from the mother providing an egg with two sets of chromosomes and the father providing two sets of chromosomes. The two parent plants ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dryopteridaceae
The Dryopteridaceae are a Family (biology), family of leptosporangiate ferns in the Order (biology), order Polypodiales. They are known Common name, colloquially as the wood ferns. In the Pteridophyte Phylogeny Group classification of 2016 (PPG I), the family is placed in the suborder Polypodiineae. Alternatively, it may be treated as the subfamily Dryopteridoideae of a very broadly defined family Polypodiaceae ''Sensu, sensu lato''. The family contains about 1700 species and has a cosmopolitan distribution. Species may be terrestrial plant, terrestrial, epipetric, hemiepiphyte, hemiepiphytic, or epiphytic. Many are Gardening, cultivated as ornamental plants. The largest genera are ''Elaphoglossum'' (600+), ''Polystichum'' (260), ''Dryopteris'' (225), and ''Ctenitis'' (150). These four genera contain about 70% of the species. Dryopteridaceae Evolutionary radiation, diverged from the other families in eupolypods I about 100 million years ago. Description The rhizomes are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |