Top Results for Filamentous

Bangia atropurpurea is a species of filamentous red alga recognized for its dark purple or reddish-black, unbranched threads. It is notable for its ability to thrive in both freshwater and marine environments, a relatively rare characteristic among red algae. This eukaryotic organism typically attac...

Desmarestia viridis is a species of brown algae native to temperate and polar coastal waters. It is distinguished by its unique ability to store high concentrations of sulfuric acid within its cellular vacuoles. When the alga's cells are disrupted or damaged, the released acid causes its tissues to...

Rytiphlaea tinctoria is a red alga in the family Rhodomelaceae, recorded from the Mediterranean Sea and parts of the Atlantic Ocean. It forms branching thalli in marine habitats and is associated with the subtidal seaweed flora of southern Europe. Historical sources describe the alga as a material u...

Chaetomorpha linum is a species of green alga in the family Cladophoraceae. It consists of fine, cylindrical, unbranched filaments made of single rows of cells and can grow attached to a surface or form loose mats in shallow marine and brackish habitats. The species is recorded from many coastal reg...

Spyridia filamentosa is a species of marine red alga classified within the family Ceramiaceae. It has a widespread distribution, commonly found in both tropical and temperate ocean waters across the globe. The seaweed features distinct, heavily corticated central axes that bear whorls of small, spin...

Cladophora glomerata is a filamentous green alga found in freshwater and some brackish habitats across many regions. Its branched filaments can form attached mats or loose floating masses, especially where nutrients and light are abundant. Dense accumulations are associated with eutrophic waters and...

Red alga (Ceramiaceae) found along the Pacific coast of North America from British Columbia to Baja California, named after Irish-born botanist Thomas Coulter.

Sphacelaria tribuloides is a small brown alga (Sphacelariaceae) of tropical and subtropical seas, recognized by its distinctive star-shaped vegetative propagules used in species identification.

Callithamnion corymbosum is a small filamentous red alga in the family Ceramiaceae. Its delicate thallus is built from fine branching filaments, with branches arranged in a pattern that can give portions of the plant a corymb-like appearance. It has been treated in classical phycological literature...

Chaetomorpha melagonium is a filamentous green alga in the family Cladophoraceae. It forms coarse, unbranched threads made of relatively large cylindrical cells, producing a stiff or rope-like appearance rather than a soft leafy frond. The species is associated with cold marine environments, includi...

Aglaothamnion hookeri is a delicate red alga (Ceramiaceae) of the North Atlantic, named after botanist Joseph Dalton Hooker, with alternately branched, feathery fronds.

Cladophora rupestris is a dark green filamentous alga common on shaded rocky shores of the North Atlantic. Its body consists of branching, thread-like filaments, and it can persist throughout the year in intertidal crevices and pools. The species is suited to wave-washed marine habitats and is gener...

Griffithsia flosculosa is a delicate filamentous red alga found in the northeastern Atlantic and the Mediterranean. Its fine branchlets are arranged in whorls, giving the plant a flower-like appearance when viewed under a microscope. The species is relevant to marine botany and microscopic seaweed i...

Chaetomorpha antennina is a green alga composed of stiff, unbranched filaments. It grows on tropical and subtropical rocky shores, especially in the intertidal zone, where its basal holdfast attaches the alga to a hard surface. Unlike many seaweeds with broad blades or branching fronds, this species...

A delicate, filamentous red alga (Ceramiaceae) of the Mediterranean and Atlantic, named in honor of French phycologist Édouard Bornet (1828–1911), a pioneering authority on algal systematics.

Antithamnion plumula is a species of small filamentous red alga in the genus Antithamnion. It is recognized by its delicate, feathery growth form, with fine branches and opposite, pinnately arranged branchlets that are especially useful for identification under magnification. The species occurs in m...

Nereia filiformis is a brown alga in the family Sargassaceae, recorded from the Mediterranean Sea. It is distinguished by thread-like, unbranched filaments and grows on rocky substrata in marine coastal habitats. The species is a small filamentous seaweed rather than a large leathery kelp, and it is...

Rhodothamniella floridula is a small red alga in the family Nemaliaceae. It forms turf-like growths on intertidal rock surfaces along European Atlantic coasts, where its fine filaments can create a low carpet over the substrate. The species is associated with wave-washed shore habitats and belongs t...

Ceramium virgatum is a filamentous red marine alga in the family Ceramiaceae. It forms bushy, repeatedly branched fronds that may be brownish red to yellowish green, with corticated axes and inward-curved branch tips; it grows on rock, shells, and other algae in intertidal and shallow subtidal habit...

Rhizoclonium riparium is a filamentous green alga in the family Cladophoraceae. It consists of uniseriate, hairlike filaments that are unbranched or have short lateral rhizoidal branches, and it often forms tangled masses or mats. The species occurs in high intertidal and brackish settings, especial...

Tilopteris mertensii is a small brown alga in the class Phaeophyceae, order Tilopteridales and family Tilopteridaceae. It forms a delicate, feathery thallus with a main axis and opposite branches arranged in one plane; the upper branches are mostly one cell wide and end in hair-like tips, while mono...

Polysiphonia fucoides is a marine red alga that forms cartilaginous, cylindrical tufts, usually brownish purple, on rocks and other algae in the intertidal zone. Its branched fronds may reach about 30 cm, although they are more often shorter, and the species has a branched rhizoidal holdfast. The ma...

Ceramium rubrum is a name historically applied to a filamentous marine red alga of temperate shores, with erect, repeatedly branched fronds that commonly grow on rock or other seaweeds. The name is taxonomically unsettled in older literature: AlgaeBase lists Ceramium rubrum C. Agardh as a synonym of...

Giffordia sandriana is a minute, filamentous brown alga in the family Ectocarpaceae. It occurs in temperate Atlantic and Mediterranean waters and typically grows epiphytically, attached to the surface of a larger seaweed rather than forming a large independent thallus. Its small size and growth on o...

Myriotrichia clavaeformis is a marine brown alga in the order Ectocarpales and family Chordariaceae. It forms a delicate filamentous thallus with short side branches and hair-like structures in marine intertidal habitats, and can grow as an epiphyte on another alga. A documented culture strain came...

Sphacelaria cirrosa is a small filamentous brown alga in the family Sphacelariaceae. It commonly grows as an epiphyte on other algae or on hard coastal surfaces, forming fine, branched threads rather than a broad blade. The species is identified in part by its vegetative propagules, which may develo...

Pylaiella littoralis is a filamentous marine brown alga. Its finely branched, wiry thalli grow on rock and other hard surfaces or as an epiphyte on larger seaweeds, especially in intertidal and shallow coastal habitats; it is common and widely distributed in the North Atlantic and also occurs in the...