Chara tomentosa Linnaeus 1753

Chara tomentosa Linnaeus

Current name: Chara tomentosa Linnaeus
Chara tomentosa. Top of plant. - 01 January 0001.

Publication Details
Chara tomentosa Linnaeus 1753: 1156

Published in: Linnaeus, C. (1753). Species plantarum, exhibentes plantas rite cognitas, ad genera relatas, cum differentiis specificis, nominibus trivialibus, synonymis selectis, locis natalibus, secundum systema sexuale digestas. Vol. 2 pp. [i], 561-1200, [1-30, index], [i, err.]. Holmiae [Stockholm]: Impensis Laurentii Salvii.

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Publication date: 1 May 1753

Original description:  

Type Species
The type species (lectotype) of the genus Chara is Chara vulgaris Linnaeus.

Status of Name
This name is of an entity that is currently accepted taxonomically.

Origin of Species Name
Adjective (Latin), tomentose, i.e., thickly and evenly covered with short more or less adpressed curled or curved matted hairs (Stearn 1973).

General Environment
This is a freshwater species.

In this species the plants are robust, from 10  60 cm long, and the axis is up to 2 mm in diameter. Parts of the plants, especially young plants have a red colour which is an important character for the determination of the species. Plants from deeper water are green. The plants are usually heavily encrusted. The branchlets are 6- 8, short, each with 4- 5 segments. The stem cortex is diplostichous, tylacanthous. The spine cells are solitary or geminate, swollen, and similar to the stipulodes and the bract-cells. The species is dioecious. Gametangia are at the 2-3 lowest branchlet nodes. The oogonia are up to 1.2 mm long. The oospore is brown. The antheridia are very large and up to 1.5 mm in diameter.

Chara tomentosa is found both in freshwater and brackish water, the last in the Baltic Sea (red parts on the map). It is found within the salinity area 4.5  7.5 PSU, and it is presumed that lower or higher salinity are natural limits for the distribution of the brackish water form. The species is found in sheltered places, bays, coastal lagoons on soft muddy bottoms down to 3 m depth. In freshwater Chara tomentosa is only found in calcareous waters, Chara- to Potamogeton-lakes. C. tomentosa is a perennial species. It grows down to a depth of 4-5 m, on limerich sediments. Often the species is found in dense, mixed populations with other Chara-lakes species. Fertile plants are normally found in June to September. Ripe, brown oospores are rare, and sexual reproduction is therefore ineffective. This is, in addition to its special habitats one of the factors which limits the distribution of the species.

Created: 11 April 2002 by M.D. Guiry.

Last updated: 24 March 2023

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Citing AlgaeBase
Cite this record as:
E.A. Molinari Novoa in Guiry, M.D. & Guiry, G.M. 24 March 2023. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway.; searched on 21 May 2024

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