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Percursaria
''Percursaria'' is a genus of green algae in the family Ulvaceae Ulvaceae () is a widely distributed family of thin green algae characterized by a flat or a hollow tubular thallus, reproducing via conjugation of planogametes or zoospores, and classified within the orders Ulotrichales or, more commonly, Ul .... References Ulvaceae Ulvophyceae genera {{Ulvophyceae-stub ...
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Percursaria Percursa
''Percursaria percursa'' is a species of seaweed from the family Ulvaceae. The species type locality is Denmark Denmark is a Nordic countries, Nordic country in Northern Europe. It is the metropole and most populous constituent of the Kingdom of Denmark,, . also known as the Danish Realm, a constitutionally unitary state that includes the Autonomous a .... Its floating masses of unbranched filaments are several centimeters in length, broad and thick. References Ulvaceae Chlorophyta species {{Ulvophyceae-stub ...
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Ulvaceae
Ulvaceae () is a widely distributed family of thin green algae characterized by a flat or a hollow tubular thallus, reproducing via conjugation of planogametes or zoospores, and classified within the orders Ulotrichales or, more commonly, Ulvales. Genera in the family Ulvaceae * '' Gemina'' V.J.Chapman, 1952 * '' Letterstedtia'' Areschoug, 1850 * '' Ochlochaete'' Thwaites, 1849 * '' Percursaria'' Bory de Saint-Vincent, 1823 * '' Ruthnielsenia'' C.J.O'Kelly, B.Wynsor & W.K.Bellows, 2004 * '' Ryuguphycus'' H.Kawai, T.Hanyuda & T.Kitayama, 2020 * ''Ulva Ulva (; ) is a small island in the Inner Hebrides of Scotland, off the west coast of Mull. It is separated from Mull by a narrow strait, and connected to the neighbouring island of Gometra by a bridge. Much of the island is formed from Cen ...'' Linnaeus, 1753 * '' Ulvaria'' Ruprecht, 1850 * '' Umbraulva'' E.H.Bae & I.K.Lee, 2001 References {{Authority control Ulvophyceae families ...
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Genus
Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In binomial nomenclature, the genus name forms the first part of the binomial species name for each species within the genus. :E.g. ''Panthera leo'' (lion) and ''Panthera onca'' (jaguar) are two species within the genus ''Panthera''. ''Panthera'' is a genus within the family Felidae. The composition of a genus is determined by taxonomy (biology), taxonomists. The standards for genus classification are not strictly codified, so different authorities often produce different classifications for genera. There are some general practices used, however, including the idea that a newly defined genus should fulfill these three criteria to be descriptively useful: # monophyly – all descendants of an ancestral taxon are grouped together (i.e. Phylogeneti ...
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Green Algae
The green algae (: green alga) are a group of chlorophyll-containing autotrophic eukaryotes consisting of the phylum Prasinodermophyta and its unnamed sister group that contains the Chlorophyta and Charophyta/ Streptophyta. The land plants ( Embryophytes) have emerged deep within the charophytes as a sister of the Zygnematophyceae. Since the realization that the Embryophytes emerged within the green algae, some authors are starting to include them. The completed clade that includes both green algae and embryophytes is monophyletic and is referred to as the clade Viridiplantae and as the kingdom Plantae. The green algae include unicellular and colonial flagellates, most with two flagella per cell, as well as various colonial, coccoid (spherical), and filamentous forms, and macroscopic, multicellular seaweeds. There are about 22,000 species of green algae, many of which live most of their lives as single cells, while other species form coenobia (colonies), long filaments ...
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