Osmunda

osmundine
Osmunda is a genus of primarily temperate-zone ferns of family Osmundaceae.wikipedia
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Osmunda claytoniites

Osmunda claytoniites is an extinct fern in the genus Osmunda, very similar to the extant fern Osmunda claytoniana.

Osmunda japonica

zenmaiAsian royal fernJapanese Royal Fern
Osmunda nipponica Makino ), also called Asian royal fern, is a fern in the genus Osmunda native to east Asia, including Japan, China, Korea, Taiwan, and the far east of Russia on Sakhalin.

Osmundaceae

OsmundalesFlowering fernsosmunadcean
Osmunda is a genus of primarily temperate-zone ferns of family Osmundaceae. Osmunda, the type genus of the fern order, Osmundales has historically been the largest genus in the family Osmundaceae.
A molecular dating study using Metzgar et al.'s data and a comprehensive set of rhizome and leaf fossils estimated that (sub)generic differentiation within Osmundaceae started by the Triassic and was finished by the Early Cretaceous with the formation of Osmunda and Plenasium.

Osmunda wehrii

Osmunda wehrii is an extinct species of fern in the modern genus Osmunda of the family Osmundaceae.

Osmunda lancea

O. lancea
Osmunda lancea is a fern in the genus Osmunda, section Euosmunda.

Plenasium banksiifolium

Osmunda bromeliifolia
The genus Plenasium is recognized in the Pteridophyte Phylogeny Group classification of 2016 (PPG I); however, some sources place all Plenasium species in a more broadly defined Osmunda, treating this species as Osmunda banksiifolia.

Plenasium javanicum

Osmunda javanica
The genus Plenasium is recognized in the Pteridophyte Phylogeny Group classification of 2016 (PPG I); however, some sources place all Plenasium species in a more broadly defined Osmunda, treating this species as Osmunda javanica.

Osmunda spectabilis

royal fernO. spectabilisflowering fern
Osmunda angustifolia, Osmunda bromeliifolia, and all extinct Osmunda species are missing from this cladogram.

Plenasium

It is recognized in the Pteridophyte Phylogeny Group classification of 2016 (PPG I), but kept within a more broadly circumscribed genus Osmunda by other sources.

Plenasium vachellii

The genus Plenasium is recognized in the Pteridophyte Phylogeny Group classification of 2016 (PPG I); however, some sources place all Plenasium species in a more broadly defined Osmunda, treating this species as Osmunda vachellii.

Plenasium angustifolium

O. angustifoliaOsmunda angustifolia
The genus Plenasium is recognized in the Pteridophyte Phylogeny Group classification of 2016 (PPG I); however, some sources place all Plenasium species in a more broadly defined Osmunda, treating this species as Osmunda angustifolia.

Osmundastrum

cinnamon fernOsmundastrum cinnamomeumOsmunda cinnamomea
The publication of a detailed phylogeny of the family by Metzgar et al. in 2008 showed that Osmunda as circumscribed was paraphyletic and that Osmunda cinnamomea, despite its morphological similarity to Osmunda claytoniana, was sister to the rest of the family, and resurrected the segregate genus Osmundastrum, by elevating it from subgenus, to contain it and render Osmunda monophyletic.
Cladistically, it is either necessary then to include all species of the Osmundaceae, including Todea and Leptopteris in the genus Osmunda, or else it is necessary to segregate the genus Osmundastrum.

Genus

generageneric namegeneric
Osmunda is a genus of primarily temperate-zone ferns of family Osmundaceae.

Fern

PolypodiopsidafernsPolypodiophyta
Osmunda is a genus of primarily temperate-zone ferns of family Osmundaceae. Osmunda, the type genus of the fern order, Osmundales has historically been the largest genus in the family Osmundaceae.

Family (biology)

familyfamiliessubfamily
Osmunda is a genus of primarily temperate-zone ferns of family Osmundaceae.

Species

specificspecific epithetspecific name
Five to ten species have been listed for this genus.

Frond

frondspinnapinnae
Completely dimorphic fronds or pinnae (hemidimorphic), green photosynthetic sterile fronds, and non-photosynthetic spore-bearing fertile pinnae, with large, naked sporangia.

Pinnation

pinnatetripinnatepinnae
Completely dimorphic fronds or pinnae (hemidimorphic), green photosynthetic sterile fronds, and non-photosynthetic spore-bearing fertile pinnae, with large, naked sporangia.

Photosynthesis

photosyntheticphotosynthesizephotosynthesizing
Completely dimorphic fronds or pinnae (hemidimorphic), green photosynthetic sterile fronds, and non-photosynthetic spore-bearing fertile pinnae, with large, naked sporangia.

Spore

sporessporulationsporulate
Completely dimorphic fronds or pinnae (hemidimorphic), green photosynthetic sterile fronds, and non-photosynthetic spore-bearing fertile pinnae, with large, naked sporangia.

Sporangium

sporangiamegasporangiumsporangiospore
Completely dimorphic fronds or pinnae (hemidimorphic), green photosynthetic sterile fronds, and non-photosynthetic spore-bearing fertile pinnae, with large, naked sporangia.

Type genus

typeas the order '''Coelacanthiformes''' is named after it.is based on the genus
Osmunda, the type genus of the fern order, Osmundales has historically been the largest genus in the family Osmundaceae.