? Mosquito fern
Feathered mosquito fern Azolla pinnata
Scientific classification
Kingdom: Plantae Division: Pteridophyta Class: Pteridopsida Order: Marsileales Family: Azollaceae Genus: Azolla
Species
Azolla caroliniana Willd. Azolla filiculoides Lam. Azolla japonica Franch. & Sav. Azolla mexicana Presl Azolla microphylla Kaulf. Azolla nilotica Decne. ex Mett. Azolla pinnata R. Br. Feathered mosquito fern Azolla pinnata David Nicholls [1] This image may be copied and used, in whole or in part, for any non-profit, educational purpose provided that all reproductions bear an appropriate credit. ... Scientific classification or biological classification is how biologists group and categorize extinct and living species of organisms. ... Divisions Land plants (embryophytes) Non-vascular plants (bryophytes) Hepatophyta - liverworts Anthocerophyta - hornworts Bryophyta - mosses Vascular plants (tracheophytes) Lycopodiophyta - clubmosses Equisetophyta - horsetails Pteridophyta - true ferns Psilotophyta - whisk ferns Ophioglossophyta - adderstongues Seed plants (spermatophytes) †Pteridospermatophyta - seed ferns Pinophyta - conifers Cycadophyta - cycads Ginkgophyta - ginkgo Gnetophyta - gnetae Magnoliophyta - flowering plants Adiantum pedatum (a fern... 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. ... Subclasses Subclass: Cyatheatae Subclass: Schizaeatae Subclass: Pteriditae Subclass: Polypoditae The Pteridopsida is a class of plants in the Division Pteridophyta that includes the modern ferns. ... Families Azollaceae (mosquito ferns) Marsileaceae (water-clovers, pillworts) Salviniaceae (water-spangles) The Order Marsileales was formerly known as the Hydropteridales, but by modern rules of botanic nomenclature, the name has been changed. ...

The Mosquito ferns, genus Azolla, are a peculiar genus (the only genus in the family Azollaceae) of six species of aquatic ferns. They are extremely reduced in form and specialized, looking nothing like conventional ferns but greatly resembling moss. See genus (mathematics) for the use of the term in mathematics. ... Aquatic plants, also called hydrophytic plants or hydrophytes. ... 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. ... Subclasses Andreaeidae Sphagnidae Tetraphidae Polytrichidae Buxbaumiidae Bryidae Archidiidae Moss is a type of simple or non-vascular plant, of the class Musci, in the division Bryophyta, that have rhizoids instead of true roots. ...

Mosquito ferns float on the surface of water with their roots floating in the water. They form a symbiotic relationship with the cyanobacterium Anabaena azollae, which allows the plants to fix nitrogen from the air. Water (from the Old English word wæter; c. ... Common Clownfish (Amphiprion ocellaris) in their magnificent sea anemone (Heteractis magnifica) home. ... Cyanobacteria (Greek: cyanos = blue) are a phylum of aquatic bacteria that obtain their energy through photosynthesis. ... Anabaena is a genus of filamentous cyanobacteria, or blue-green algae, found as plankton. ... Nitrogen fixation is the process by which nitrogen is taken from its relatively inert molecular form (N2) in the atmosphere and converted into nitrogen compounds useful for other chemical processes (such as, notably, ammonia, nitrate and nitrogen dioxide). ... Air is a name for the mixture of gases present in the Earths atmosphere. ...

Because of their nitrogen-fixing capability, mosquito ferns have enabled an agricultural revolution in parts of southeast Asia. When rice paddies are flooded in the spring, they can be inoculated with Azolla, which then quickly multiplies to cover the water. As the plants die, they contribute nitrogen to the rice plants, and as the rice paddy dries out, the Azolla all eventually die, making an exceptional green fertilizer. General Name, Symbol, Number nitrogen, N, 7 Chemical series nonmetals Group, Period, Block 15, 2, p Appearance colorless Atomic mass 14. ... World map showing location of Asia Asia is the central and eastern part of the continent of Eurasia, defined by subtracting the European peninsula from Eurasia. ... Species References ITIS 41975 2002-09-22 Rice (genus Oryza) is a plant of the grass family which is a dietary staple of more than half of the worlds human population. ... General Name, Symbol, Number nitrogen, N, 7 Chemical series nonmetals Group, Period, Block 15, 2, p Appearance colorless Atomic mass 14. ... Green fertilizers are plants that are grown to create fertilization and soil-building to improve agricultural production. ...

Mosquito ferns, however, are also serious weeds in many parts of the world, covering bodies of water so thickly that no water is exposed. This is where they derive their common name, from the belief that no mosquito can penetrate the coating of fern to lay its eggs in the water. Azolla is reputed to be able to grow so quickly that it can double its mass in three days under good conditions. Dandelions, shown here in proliferation, are commonly thought of as weeds. ... Genera See text. ... An average Whooping Crane egg is 102 mm long, and weighs 208 grams A baby tortoise emerges from a reptile egg. ...

Most of the species can produce large amounts of anthocyanins in bright sunlight, creating an intense red color and causing the water surface to appear to be covered with a red carpet. Plants with abnormally high anthocyanin quantities are popular as ornamental plants - here, a selected purple-leaf cultivar of European Beech Anthocyanin (Etymology: greek. ...

Mosquito ferns are safe to grow in cool temperate areas with prolonged freezing in winter, as they cannot overwinter in these conditions. They are often grown as an ornamental plant by water-garden hobbyists. An ornamental is a plant variety that is grown for its beauty (in its end use), rather than commercial or other value. ... Water gardens, also known as aquatic gardens and backyard ponds, have become popular in recent years. ...