''Hormotila'' is a
genus
Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ...
of
green algae
The green algae (: green alga) are a group of chlorophyll-containing autotrophic eukaryotes consisting of the phylum Prasinodermophyta and its unnamed sister group that contains the Chlorophyta and Charophyta/ Streptophyta. The land plants ...
in the family
Chaetophoraceae
Chaetophoraceae is a family (biology), family of green algae in the order Chaetophorales.
Members of the family are variously semi-terrestrial to aquatic in habitat, and consist of branched filaments in two parts, a prostrate system of filaments ...
.
The genus was
circumscribed In geometry, a circumscribed circle for a set of points is a circle passing through each of them. Such a circle is said to ''circumscribe'' the points or a polygon formed from them; such a polygon is said to be ''inscribed'' in the circle.
* Circum ...
by
Antonino Borzì
Antonino Borzì (20 August 1852, in Castroreale – 24 August 1921, in Lucca) was an Italian botanist.
Life and career
Antonino Borzì became a professor of botany at the University of Palermo in 1879 and at the University of Messina in 189 ...
in 1883.
The
type species
In International_Code_of_Zoological_Nomenclature, zoological nomenclature, a type species (''species typica'') is the species name with which the name of a genus or subgenus is considered to be permanently taxonomically associated, i.e., the spe ...
of ''Hormotila'', ''
Hormotila mucigena'', as originally illustrated by Borzì, was a heterogenous assemblage of different algae. Some of his figures showed cells in laminated layers of
mucilage
Mucilage is a thick gluey substance produced by nearly all plants and some microorganisms. These microorganisms include protists which use it for their locomotion, with the direction of their movement always opposite to that of the secretion of ...
, reminiscent of ''
Gloeocystis'' or ''
Urococcus''. In other figures, the cells were in branched, tubular layers of mucilage. Still other figures showed figures reminiscent of ''
Oocystis
''Oocystis'' is a planktonic genus of mostly freshwater green algae of the Family (biology), family Oocystaceae. It is the type genus of its family. ''Oocystis'' is mostly found in freshwater habitats and has a cosmopolitan distribution. A few sp ...
'', ''
Ankistrodesmus
''Ankistrodesmus'' is a genus of green algae in the family Selenastraceae. It is one of the most common types of phytoplankton in freshwater habitats around the world. The name ''Ankistrodesmus'' comes from the Greek roots ''ankistron'', meanin ...
'' or ''
Elakatothrix
''Elakatothrix'' is a genus of green algae in the class Klebsormidiophyceae.
Etymology
Genus name ''Elakatothrix'' is composed of elakato- prefix, "spindle", and –thrix suffix, "thread", literally "spindle thread",Phycokey-Elakatothrix read ...
''. In 2016,
Daniel E. Wujek and
Michael J. Wynne redefined the genus by emending the description of the type species to only include the second sense, i.e. cells in branched tubes.
[
]
Former family
''Hormotila'' was formerly the type
Type may refer to:
Science and technology Computing
* Typing, producing text via a keyboard, typewriter, etc.
* Data type, collection of values used for computations.
* File type
* TYPE (DOS command), a command to display contents of a file.
* ...
genus of the family Hormotilaceae. , AlgaeBase
AlgaeBase is a global species database of information on all groups of algae, both seaweed, marine and freshwater algae, freshwater, as well as sea-grass.
History
AlgaeBase began in March 1996, founded by Michael D. Guiry, Michael Guiry. Text ...
no longer included any genera in the family,
References
Chaetophorales genera
Chaetophoraceae
{{Chlorophyceae-stub