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Chara is a genus of charophyte green algae in the family Characeae. They are multicellular and superficially resemble land plants because of stem-like and leaf-like structures. They are found in freshwater, particularly in limestone areas throughout the northern temperate zone, where they grow submerged, attached to the muddy bottom.
Cladophora is a genus of reticulated filamentous green algae in the class Ulvophyceae. They may be referred to as reticulated algae , branching algae , [ 1 ] or blanket weed . [ 2 ] The genus has a worldwide distribution and is harvested for use as a food and medicine.
In form, the brown algae range from small crusts or cushions [10] to leafy free-floating mats formed by species of Sargassum. They may consist of delicate felt-like strands of cells, as in Ectocarpus, or of 30-centimeter-long (1 ft) flattened branches resembling a fan, as in Padina.
Green algae are often classified with their embryophyte descendants in the green plant clade Viridiplantae (or Chlorobionta). Viridiplantae, together with red algae and glaucophyte algae, form the supergroup Primoplantae, also known as Archaeplastida or Plantae sensu lato. The ancestral green alga was a unicellular flagellate. [20]
Membranoptera alata is a small red marine alga growing to a length of no more than 20 cm. Its fronds are up to 2.4 mm wide and monostromatic, that is formed of a thin layer of cells, [1] [2] narrow and branching in one plane. A midrib runs along the center of the branches with fine microscopic veins from the midrib to the margins. The tips of ...
Phycology (from Ancient Greek φῦκος (phûkos) 'seaweed' and -λογία 'study of') is the scientific study of algae. Also known as algology, phycology is a branch of life science. Algae are important as primary producers in aquatic ecosystems. Most algae are eukaryotic, photosynthetic organisms
The axial cell is large and occupies about one third of the diameter of each branch, best seen in transverse section. It is deep brownish red in colour. [2] Choreocolax polysiphoniae is a small parasitic alga which grows in a cushion-like manner to 1 mm in diameter on the branches of P. lanosa. [4]
Polysiphonia elongata is a small red alga which, unlike some other species of Polysiphonia, does not grow as tufts. It has erect cylindrical main branches and is densely branched growing to a height of 30 cm. The main branches bear lateral branches, each branch consists of a central axes of cells with four periaxial cells. These periaxial cells ...