Marattiopsida
Mule's-foot fern (Angiopteris evecta)
Scientific classification
Kingdom: Plantae Division: Pteridophyta Class: Marattiopsida
Orders
Marattiales

Class Marattiopsida is a group of ferns containing a single order, Marattiales, and family, Marattiaceae. Class Marattiopsida diverged from other ferns very early in their evolutionary history and are quite different from many plants familiar to people in temperate zones. Many of them have massive, fleshy rootstocks and the largest known fronds of any fern. The Marattiaceae is one of two eusporangiate fern families, meaning that the sporangium is formed from a group of cells vs the leptosporangium in which there is a single initial cell. There are four extant genera (Angiopteris, Christensenia, Danaea and Marattia) and it has a long fossil history with many extinct taxa (Psaronius, Asterotheca, Scolecopteris, Eoangiopteris, Qasimia, Marantoidea, Danaeites, Marattiopsis, etc.) Angiopteris evecta. ... Scientific classification or biological classification is a method by which biologists group and categorize species of organisms. ... Divisions Green algae Chlorophyta Charophyta Land plants (embryophytes) Non-vascular plants (bryophytes) Marchantiophyta—liverworts Anthocerotophyta—hornworts Bryophyta—mosses Vascular plants (tracheophytes) †Rhyniophyta—rhyniophytes †Zosterophyllophyta—zosterophylls Lycopodiophyta—clubmosses †Trimerophytophyta—trimerophytes Pteridophyta—ferns and horsetails Seed plants (spermatophytes) †Pteridospermatophyta—seed ferns Pinophyta—conifers Cycadophyta—cycads Ginkgophyta—ginkgo Gnetophyta—gnetae Magnoliophyta—flowering plants... Classes Marattiopsida Osmundopsida Gleicheniopsida Pteridopsida A fern, or pteridophyte, is any one of a group of some twenty thousand species of plants classified in the Division Pteridophyta, formerly known as Filicophyta. ... Orders Marattiales Christenseniales The Marattiopsida are primitive ferns that are largely quite different from many of the plants that are familiar to people in temperate zones. ... Classes Psilotopsida Equisetopsida Marattiopsida Pteridopsida (Polypodiopsida) A fern is any one of a group of about 20,000 species of plants classified in the phylum or division Pteridophyta, also known as Filicophyta. ... Orders Marattiales Class Marattiopsida is a group of ferns containing a single order, Marattiales, and family, Marattiaceae. ... In geography, temperate latitudes of the globe lie between the tropics and the polar circles. ... A fern with simple (lobed or pinnatifid) blades, the dissection of each blade not quite reaching to the rachis. ... Eusporangiate ferns are vascular spore plants, whose sporangia arose from several epidermal cells and not from a single cell as in leptosporangiate ferns. ... A sporangium (pl. ... Species See text. ... Species See text. ...

In this group, such fronds are found in the genus Angiopteris, native to Australasia, Madagascar and Oceania. These fronds may be up to 9 meters long in the species Angiopteris teysmanniana of Java. In Jamaica the species Angiopteris evecta is widely naturalized and is registered as an invasive species. The plant was introduced by Captain Bligh from Tahiti as a staple food for slaves and cultivated in the Castleton Gardens in 1860. From there it was able to distribute itself throughout the eastern half of the island. Australasia Australasia is a term variably used to describe a region of Oceania: Australia, New Zealand, and neighbouring islands in the Pacific Ocean. ... Oceania is the smallest of the worlds terrestrial ecozones, and unique in not including any continental land mass. ... Java (Indonesian, Javanese, and Sundanese: Jawa) is an island of Indonesia and the site of its capital city, Jakarta. ... Lantana Invasion of abandoned citrus plantation; Moshav Sdey Hemed, Israel; May 2, 2006 The term invasive species refers to a subset of those species defined as introduced species or non-indigenous species. ... Bligh is an electoral district of the Legislative Assembly in the Australian state of New South Wales. ... This article or section does not adequately cite its references or sources. ... The Buxton Memorial Fountain, celebrating the emancipation of slaves in the British Empire in 1834, London. ...

Another East-Asian genus is Christensenia, a peculiar fern with fronds resembling a horse chestnut leaf. That is why the species is called Christensenia aesculifolia, meaning Christensen's chestnut-leaf. Christensen was a famous Danish fern botanist. Species See text. ... Species Aesculus arguta: Texas Buckeye Aesculus californica: California Buckeye Aesculus chinensis: Chinese Horse-chestnut Aesculus flava (): Yellow Buckeye Aesculus glabra: Ohio Buckeye Aesculus hippocastanum: Common Horse-chestnut Aesculus indica: Indian Horse-chestnut Aesculus neglecta: Dwarf Buckeye Aesculus parviflora: Bottlebrush Buckeye Aesculus pavia: Red Buckeye Aesculus sylvatica: Painted Buckeye Aesculus turbinata... Christensen was a Formula One constructor (Indy 500 only) in 1959 and 1960. ...

The most widespread genus in Marattiaceae is the pan-tropical Marattia, usually ocurring at higher elevations. These are also large ferns with globular rhizomes, but fronds can be up to 4 times pinnate. The sporangia are fused into bivalvate structures called a synangium. The New Zealand King Fern, Marattia salicina, known in Maori as Para also belongs here. Sometimes called the Potatoe Fern, this is a large Australasian fern with an edible fleshy rhizome that is used as a food source by some indigenous peoples. Orders Marattiales Class Marattiopsida is a group of ferns containing a single order, Marattiales, and family, Marattiaceae. ... A sporangium (pl. ... A sporangium (pl. ... Māori (or Maori) is a language spoken by the native peoples of New Zealand and the Cook Islands. ... The Australasia Ecozone The Australasian ecozone – is an ecological region that is coincident, but not synonymous (by some definitions), with the geographic region of Australasia. ... Ginger rhizome A rhizome is, in botany, a usually underground, horizontal stem of a plant that often sends out roots and shoots from its nodes. ...

The forth genus Danaea is endemic to the Neotropics. They have bipinnate leaves with opposite pinnae, which are dimorphic, the fertile leaves much contracted, and covered below with sunken synangia. Species See text. ... A biogeographic region, that extends from Mexico southwards to Tierra del Fuego, and also includes the Caribbean islands. ...

Several other genera are known in the Marattiaceae, namely: Archangiopteris, Macroglossum, Protangiopteris, and Protomarattia. These are all synonyms of Angiopteris. Orders Marattiales Class Marattiopsida is a group of ferns containing a single order, Marattiales, and family, Marattiaceae. ... Synonyms (in ancient Greek syn συν = plus and onoma όνομα = name) are different words with similar or identical meanings. ...

According to recent molecular studies it appears that these eusporangiate ferns are a sister group to the horsetails (Equisetaceae). Species Subgenus Equisetum Equisetum arvense - Field or Common Horsetail Equisetum bogotense - Andean Horsetail Equisetum diffusum - Himalayan Horsetail Equisetum fluviatile - Water Horsetail Equisetum palustre - Marsh Horsetail Equisetum pratense - Shade Horsetail Equisetum sylvaticum - Wood Horsetail Equisetum telmateia - Great Horsetail Subgenus Hippochaete Equisetum giganteum - Giant Horsetail Equisetum myriochaetum - Mexican Giant Horsetail Equisetum hyemale... Species Subgenus Equisetum Equisetum arvense - Field or Common Horsetail Equisetum bogotense - Andean Horsetail Equisetum diffusum - Himalayan Horsetail Equisetum fluviatile - Water Horsetail Equisetum palustre - Marsh Horsetail Equisetum pratense - Shade Horsetail Equisetum sylvaticum - Wood Horsetail Equisetum telmateia - Great Horsetail Subgenus Hippochaete Equisetum giganteum - Giant Horsetail Equisetum myriochaetum - Mexican Giant Horsetail Equisetum hyemale...

See botanyphotos.net [1] for many images of Marattiaceae.