Cornish Biodiversity Network  -  Supporting Wildlife Recording

   A B C D E F G H I J K L M N O P Q R S T U V W X Y Z restore

Cornish Red Data (2009)

The descriptive text, below the map, is from the Cornish Red Data Book (2009). The map on this web page depicts the organisms distribution and shows the records made pre-2000 and those made since.

Equisetum x willmotii - Willmot's Horsetail

Range & Status

Native; Endemic. First found in Co. Cavan in Ireland in 1984.

Regional Distribution

Discovered by C.N. Page at St. Dennis Junction, Goss Moor (SW95) in 1999, where both parents grow together ( E. fluviatile and E. telmateia ).

Habitat & Ecology

Grows in a disturbed area, previously a railway junction, then used as a cement works, within an area of wetland. It grows alongside a track beside a pool where the two parents occur.


Threatened by scrub encroachment and lack of disturbance.


Goss Moor is a SSSI and NNR, but the site is not included in the designated area.


I.J. Bennallick, S. Board, C.N. French, P.A. Gainey, C. Neil, R. Parslow, A. Spalding and P.E. Tompsett. eds. 2009. Red Data Book for Cornwall and the Isles of Scilly. 2nd Edition.Croceago Press.

The Cornish Red Data Book Project was led by the Cornwall and Isles of Scilly Federation for Biological Recorders (CISFBR). The full text and species accounts (minus the maps) are available on the CISFBR website.