Grass  (Sporobolus caespitosus)

Sporobolus caespitosus

Facts

Kingdom Plantae
Phylum Tracheophyta
Class Liliopsida
Order Cyperales
Family Gramineae
Genus Sporobolus (1)
Size Height: less than 10 cm (2)

Status

Classified as Vulnerable (VU – D2) in 2003 under IUCN Red List categories (3).

Description

Sporobolus caespitosus is a small, perennial grass that is native to Ascension Island (2). Plants grow together in short, thick tufts in which many of the outer leaves are dead and the flower spike is usually hidden amongst the leaf blades (2).

Range

Endemic to Ascension Island in the South Atlantic, this species is now restricted to the exposed sides of Green Mountain (3).

Habitat

This species inhabits some of the more exposed sites, such as bare rock slopes and steep cinder banks. It is found at altitudes greater than 600 metres above sea level (2).

Biology

Information currently unavailable.

Threats

It is thought that Sporobolus caespitosus was previously more abundant than it is today. It may be suffering from competition with introduced species, such as the grasses Sporobolus africanus, Melinis minutiflora and Paspalum conjungatum (3).

Conservation

Ascension Conservation is involved with monitoring the population of this rare grass and will be in a position to assess the effects of competition (3).

Authentication

This information is awaiting authentication by a species expert, and will be updated as soon as possible. If you are able to help please contact:
arkive@wildscreen.org.uk

Endemic: a species or taxonomic group that is only found in one particular country or geographic area.
Perennial: plants that live for at least three seasons; after an initial period they produce flowers once a year.

References

  1. Walter, K.S. & Gillett, H.J. [eds] (1998) 1997 IUCN Red List of Threatened Plants. Compiled by the World Conservation Monitoring Center. IUCN – The World Conservation Union, Gland, Switzerland and Cambridge, UK.
  2. Ashmole, P. & Ashmole, M. (2000) St. Helena and Ascension Island: a natural history. Anthony Nelson, England.
  3. Gray, A. (2003) Red List Assessment Form. Ascension Conservation.

Species related by