''Prasiola'' is a
genus
Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial n ...
of
fresh water
Fresh water or freshwater is any naturally occurring liquid or frozen water containing low concentrations of dissolved salts and other total dissolved solids. Although the term specifically excludes seawater and brackish water, it does incl ...
and
marine green alga
The green algae (singular: green alga) are a group consisting of the Prasinodermophyta and its unnamed sister which contains the Chlorophyta and Charophyta/ Streptophyta. The land plants ( Embryophytes) have emerged deep in the Charophyte alg ...
e. Each individual plant is small but they usually grow side by side to form a green turf on rock surfaces. The genus has a
cosmopolitan distribution.
Occurrence
Freshwater species in this genus are common in cold water streams.
Reproduction
Asexual reproduction occurs by fragmentation or spores. While in
sexual reproduction
Sexual reproduction is a type of reproduction that involves a complex life cycle in which a gamete ( haploid reproductive cells, such as a sperm or egg cell) with a single set of chromosomes combines with another gamete to produce a zygote th ...
both male and female gametes are produced on the same
thalli.
Species
There are about 25 species in the genus.
Prasiola calophylla
''Prasiola calophylla'' is a species of algae.
It is one of the few marcoalgae species that can survive extreme temperatures.
The species was first described by Captain Carmichael in Lismore, Scotland.
Occurrence
It typically occurs on damp ...
''
*'' Prasiola crispa''
*'' Prasiola fangchengensis''
*'' Prasiola flotowii''
*''Prasiola furfuracea
''Prasiola furfuracea'' is a small green alga that grows terrestrially.
Description
This small alga is dark green and grows to no more than 2 mm long. The frond is membranous, one cell thick, and fan shaped. It is attached by a short stipe, ...
''
*'' Prasiola meridionalis''
*''Prasiola minuta
''Prasiola'' is a genus of fresh water and marine green algae. Each individual plant is small but they usually grow side by side to form a green turf on rock surfaces. The genus has a cosmopolitan distribution.
Occurrence
Freshwater species i ...
''
*''Prasiola novaezelandiae
''Prasiola'' is a genus of fresh water and marine green algae. Each individual plant is small but they usually grow side by side to form a green turf on rock surfaces. The genus has a cosmopolitan distribution.
Occurrence
Freshwater species ...
''
*''Prasiola snareana
''Prasiola'' is a genus of fresh water and marine green algae. Each individual plant is small but they usually grow side by side to form a green turf on rock surfaces. The genus has a cosmopolitan distribution.
Occurrence
Freshwater species ...
''
*''Prasiola sneareana
''Prasiola'' is a genus of fresh water and marine green algae. Each individual plant is small but they usually grow side by side to form a green turf on rock surfaces. The genus has a cosmopolitan distribution.
Occurrence
Freshwater species ...
''
*'' Prasiola stipitata''
*''Prasiola volcanica
''Prasiola'' is a genus of fresh water and marine green algae. Each individual plant is small but they usually grow side by side to form a green turf on rock surfaces. The genus has a cosmopolitan distribution.
Occurrence
Freshwater species ...
''
*''Prasiola linearis
''Prasiola'' is a genus of fresh water and marine green algae. Each individual plant is small but they usually grow side by side to form a green turf on rock surfaces. The genus has a cosmopolitan distribution.
Occurrence
Freshwater species ...
''
*''Prasiola sinica
''Prasiola'' is a genus of fresh water and marine green algae. Each individual plant is small but they usually grow side by side to form a green turf on rock surfaces. The genus has a cosmopolitan distribution.
Occurrence
Freshwater species ...
''
*''Prasiola tibetica
''Prasiola'' is a genus of fresh water and marine green algae. Each individual plant is small but they usually grow side by side to form a green turf on rock surfaces. The genus has a cosmopolitan distribution.
Occurrence
Freshwater species ...
''
*''Prasiola yunnanica
''Prasiola'' is a genus of fresh water and marine green algae. Each individual plant is small but they usually grow side by side to form a green turf on rock surfaces. The genus has a cosmopolitan distribution.
Occurrence
Freshwater species ...
''
References
External links
Trebouxiophyceae genera
Prasiolales
{{green algae-stub