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Red Data Books of Britain & Ireland: stoneworts 1992


The stoneworts or charophytes make up a small group of plants which are recognised as a separate class, Characeae, of the green algae (Chlorophyta). They grow mainly in calcareous fresh water and in brackish lagoons. Around 400 taxa are known worldwide ( Wood & Imahori 1965), although the number of taxa that deserve species rank is likely to be about 250 (Imahori 1954). A total of 33 species have been recorded in Britain and Ireland.

This book describes the ecology, threats, status and conservation of the 21 most threatened stoneworts in Britain and Ireland, with a distribution map and drawing of each species.

This Red Data Book is the first of a series covering lower plants of Britain and Ireland. The second book dealt with lichens, and the third covered mosses and liverworts.

This resource has been produced from a scan of an original document. You may therefore experience fluctuations in quality and large file sizes.

Please note that this Red Data Book was published in 1992, therefore more recent information may be available. To find more up-to-date information on the conservation status of species, please visit our conservation designations webpage.

Resource type Publication

Topic category Environment

Reference date 1992··

Stewart, N.F. & Church, J.M. 1992. Red Data Books of Britain and Ireland: Stoneworts. JNCC, Peterborough, ISBN 1 873701 24 1.

This Red Data Book has been compiled by Plantlife under the direction of the Nature Conservancy Council (NCC) and Joint Nature Conservation Committee (one of the successor bodies of the NCC), the National Parks and Wildlife Service, Office of Public Works (Ireland) and the Environment Service, Department of the Environment (Northern Ireland).

Responsible organisation
Communications, JNCC publisher

Limitations on public access No limitations

Use constraints Available under the Open Government Licence 3.0

Metadata date 2023·04·02

Metadata point of contact
Communications, JNCC

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