Chara rudis (A.Braun) Leonhardi, nom. illeg. 1863

Publication Details
Chara rudis (A.Braun) Leonhardi, nom. illeg. 1863: 163

Published in: Leonhardi, H.F. v[on] (1863). Die bisher bekannten Oesterreichischen Armleuchter-Gewächse besprochen von morphogenetischen Standpuncte. Sitzungsberichte Verhandlungen des naturforschenden Vereines in Brünn 2: 122-224.

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

Status of Name
This name is currently regarded as a synonym of Chara subspinosa Ruprecht.

Basionym
Chara hispida var. rudis A.Braun

Type Information
Type locality: "In einem Teiche bei Constanz" [Germany]; (Braun, Rabenhorst & SStizenberger 1857-1878: no. 4) Lectotype: C. Stizenberger; 1856; NY; 9945641 (Wood & Imahori 1965: 145) Notes: NY version of exsiccata chosen as lectotype.

Origin of Species Name
Adjective (Latin), wild.

General Environment
This is a freshwater species.

Description
The plants are large and coarse and up to 50 cm long, moderately to strongly encrusted. The axis is up to 1.5 mm broad. The internodes are about 1-2 times as long as the branchlets. The branchlets are 7-9, each with 7-8 segments, the upper 3 are usually ecorticated. The stem cortex is regularly diplostichous and strongly aulacanthous. The spine cells are commonly in pairs, somewhat curved and appressed except in younger internodes which look spiny. Some spine cells are also solitary or three together. The stipulodes are developed in both rows. The bract cells are 5-6, shorter than the oogonium. The species is monoecious. Gametangia are conjoined or sejoined at the four lowest branchlet nodes. The oogonia are solitary or in pairs, to 1.2 mm long. The oospores are dark brown to black. The antheridium is up to 450 m in diameter. Chara rudis resembles C. hispida and has been treated as a variety of this species.

Habitat
Chara rudis is only found in calcareous lakes, and occasionally in smaller waters, ditches and small pools. The species is found in Chara-lakes and Potamogeton-lakes down to 9 m depth. The sediment is marl-bottom. C. rudis is a perennial species, and in spring new shoots develop from the old plants. Fertile plants are found from May to August, but oospores from the previous year can also be found. New ripe oospores can be found from July.

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

Last updated: 05 May 2020

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Linking to this page: https://www.algaebase.org/search/species/detail/?species_id=35588

Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 05 May 2020. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 19 April 2024

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