''Stylonema alsidii'' is a species of marine

red algae Red algae, or Rhodophyta (, ; ), are one of the oldest groups of eukaryotic algae. The Rhodophyta also comprises one of the largest phyla of algae, containing over 7,000 currently recognized species with taxonomic revisions ongoing. The majority ...

. The type locality is

Trieste Trieste ( , ; sl, Trst ; german: Triest ) is a city and seaport in northeastern Italy. It is the capital city, and largest city, of the autonomous region of Friuli Venezia Giulia, one of two autonomous regions which are not subdivided into provi ...

Italy Italy ( it, Italia ), officially the Italian Republic, ) or the Republic of Italy, is a country in Southern Europe. It is located in the middle of the Mediterranean Sea, and its territory largely coincides with the homonymous geographical re ...

, but it has a worldwide distribution. The species was first described by

Giovanni Zanardini Giovanni Antonio Maria Zanardini (12 June 1804, Venice – 24 April 1878) was an Italian physician and botanist who specialized in the field of phycology. In 1831 he obtained his medical doctorate from the University of Padua, followed by a degree ...

in 1840 as ''Bangia alsidii''.

Distribution

It is one of the algae of the Houtman Abrolhos, found off the coast of

Western Australia Western Australia (commonly abbreviated as WA) is a state of Australia occupying the western percent of the land area of Australia excluding external territories. It is bounded by the Indian Ocean to the north and west, the Southern Ocean to th ...

. It is one of the red seaweeds of South Africa, including the seaweeds of the Cape Peninsula and False Bay.

Ecology

It is susceptible to infection by the

parasitic Parasitism is a close relationship between species, where one organism, the parasite, lives on or inside another organism, the host, causing it some harm, and is adapted structurally to this way of life. The entomologist E. O. Wilson has c ...

oomycete Oomycota forms a distinct phylogenetic lineage of fungus-like eukaryotic microorganisms, called oomycetes (). They are filamentous and heterotrophic, and can reproduce both sexually and asexually. Sexual reproduction of an oospore is the resul ...

Pythium porphyrae ''Pythium porphyrae'', is a parasitism, parasitic species of oomycete in the family Pythiaceae. It is the cause of red rot disease or red wasting disease, also called ' () in Japanese language, Japanese. The Botanical name, specific epithet '' ...

''.

References

External links

* *
''Stylonema alsidii'' at AlgaeBase
Stylonematophyceae Species described in 1840 {{red alga-stub