| Caloglossa | |
|---|---|
 | |
| Caloglossa vieillardii | |
Scientific classification  | |
| Clade: | Archaeplastida |
| Division: | Rhodophyta |
| Class: | Florideophyceae |
| Order: | Ceramiales |
| Family: | Delesseriaceae |
| Genus: | Caloglossa (Harvey) G.Martens |
| Synonyms [1] | |
| |
Caloglossa is a genus of algae in the Delesseriaceae. [2]
Caloglossa has thalli that resemble branching leaves. [3] This "exogenous primary branching" differentiates the genus from other members of the Delesseriaceae, other than the closely related genus Taenioma . [4]
Species of Caloglossa are red to brown in color. Each thalli has a conspicuous midrib which is formed by a row of elongated cells. In fresh water, populations spread vegetatively. In brackish water, the plants may reproduce sexually. [5]
Caloglossa is a common genus worldwide, and is distributed in littoral zones from tropical to temperate waters. They can grow in habitats of varying salinity, and may be found growing on stones on marine coasts, in brackish estuaries, epiphytically in saltmarsh and mangrove habitat, and in total freshwater areas. [4]
The genus sees use in aquascaping and may be found in the aquarium trade. [6] One species in particular, Caloglossa cf. beccarii, is popular as it exhibits a variety of colors and is easy to cultivate. [7]
Caloglossa beccarii has also been investigated as a potential food item in Thailand. It was found to have insignificant toxicity while providing a potentially rich nutritional benefit. [8]
Some authors have considered the taxon authority to be Jacob Georg Agardh instead of Georg Matthias von Martens. King & Puttock (1994) argued that Martens did not formally elevate Caloglossa to genus rank in his 1869 publication, preferring to follow Agardh's 1876 treatment instead. [4] The diversity of species within Caloglossa has been heavily studied and subject to much revision. [9] A mix of morphological and DNA analysis has informed researchers on the phylogeny of the genus. [6]
As of 2024, are 22 species recognized by AlgaeBase. [2]
Gracilaria, also known as irish moss or ogonori, is a genus of red algae in the family Gracilariaceae. It is notable for its economic importance as an agarophyte meaning that it is used to make agar, as well as its use as a food for humans and various species of shellfish. Various species in the genus are cultivated among Asia, South America, Africa and Oceania. They produce over 90% of the world's agar.
Lemanea is a genus of freshwater red algae, in the order Batrachospermales. Both species are considered to be widespread in the northern hemisphere. Although placed in the Rhodophyta it in fact is green in colour.
The Gelidiaceae is a small family of red algae containing eight genera. Many species of this algae are used to make agar.
Peyssonnelia is a genus of thalloid red alga, named after naturalist Jean-André Peyssonnel (1694–1759) It includes the algae commonly known as rumoi-iwanokawa, mayoi-iwanokawa and akase-iwanokawa. Specimens can reach around 20 cm in size. Peyssonnelia produces tetraspores.
The Delesseriaceae is a family of about 100 genera of marine red alga.
The Rhodogorgonales are an order of red algae, a sister group to the corallines. They are always thalloid and calcified; their calcification is very different from the corallines, as individual calcite crystals are deposited in the cell wall of specialised cells; this suggests that the evolution of calcification may have been independent from the corallines. They have no fossil record.
Bostrychia is a genus of filamentous red alga. Species may grow as epiphytes on other plants in salt marsh and mangrove habitats.
Hildenbrandia is a genus of thalloid red alga comprising about 26 species. The slow-growing, non-mineralized thalli take a crustose form. Hildenbrandia reproduces by means of conceptacles and produces tetraspores.
Amphiroa is a genus of thalloid red algae under the family Corallinaceae.
Martensia lewisiae is a species of red algae.
Martensia formosana is a species of red algae.
Batrachospermaceae is a family of fresh water red algae (Rhodophyta). Genera within the Batrachospermaceae generally have a "Lemanea-type" life history with carpospores germinating to produce chantransia. Sporophyte phase with meiosis occurs in an apical cell to produce the gametophyte stage. Pit connections have two pit plug cap layers with the other layer enlarged. This family of freshwater red algae is uniaxial, meaning each filament with a single apical cell. The genera included within Batrachospermaceae are listed in the table below.
Michael Dominic Richard Guiry, is an Irish botanist, who specialises in phycology (algae). See for example the articles. He is the founder and director of the algal database, AlgaeBase.
Titanophora is a genus of seaweeds belonging to family Schizymeniaceae of the order Nemastomatales.
The Pterocladiaceae is a small family of red algae containing 2 genera of agarophytes.
Liagoraceae is a family of red algae (Rhodophyta) in the order Nemaliales. The type genus is LiagoraJ.V.Lamouroux.
Halymeniales is an order of red algae belonging to the class Florideophyceae and the subclass Rhodymeniophycidae.
Peyssonneliales is a monotypic order of red algae belonging to the class Florideophyceae and the subclass Rhodymeniophycidae. It contains only 1 known family, PeyssonneliaceaeDenizot, M., 1968.
There are many types of algae that are commonly found in a freshwater aquarium setting. They are typically considered a nuisance and subject to removal through the use of algicides, the release of algae eaters, and implementation of algae scrubbers. However, total elimination of algae is considered unlikely in a hobby aquarium. Algae can be used as an bioindicator to inform an aquarist on water chemistry and other conditions.
Caloglossa beccarii, known as red moss, is a species of algae that may live in freshwater or brackish environments. It is found in the aquarium trade.