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Agrostis trachychlaena (bentgrass)

A rare grass species, Agrostis trachychlaena occurs within an area of only 16 km² on two islands in the South Atlantic Ocean. Fewer than 250 mature individuals are thought to survive.
Agrostis trachychlaena (bent grass)

Agrostis trachychlaena (Photo: Niek Gremmen)

Species information

Scientific name: 

Agrostis trachychlaena C.E. Hubb.

Common name: 

bentgrass (although this name is also applied to other species within this genus)

Conservation status: 

Endangered (EN) according to IUCN Red List criteria.


Rocky slopes, open patches in Spartina arundinacea tussock, and around albatross nesting sites.

Key Uses: 

None known.

Known hazards: 

None known.


Genus: Agrostis

About this species

Agrostis trachychlaena is a rare species of grass that grows in loose clumps on rocky slopes on two islands in the South Atlantic Ocean. Specimens of A. trachychlaena were first brought back from Inaccessible and Nightingale Islands by botanist Erling Christophersen, as part of the Norwegian Scientific Expedition in 1938. Specimens from Nightingale Island were collected by scientist Nigel M. Wace on his visits in 1968 and 1976. The most recent collections were made by Peter Ryan in 2007.


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