Inaccessible: may be extinct [2]. probably died out [3].
First collected on Inaccessible by Christophersen in Feb 1938. Not seen since, probably died out (Roux et al 1992; Ryan & Glass 2001).
[1] Ryan, P. (ed.) (2007). Field Guide to the Animals and Plants of Tristan da Cunha and Gough Island. Pisces Publications, Newbury. 162 pp; [2] Gremmen, N. J. M. (2010). Alien vascular plants of Inaccessible, Nightingale and Gough Islands (Tristan da Cunha Group).; [3] Roux, J.P., Ryan, P.G., Milton, S.J. and Moloney, C.L. (1992) Vegetation and checklist of Inaccessible Island, central South Atlantic Ocean, with notes on Nightingale Island. Bothalia 22 (1): 93 – 109. Gremmen, N. J. M. (2010). Alien vascular plants of Inaccessible, Nightingale and Gough Islands (Tristan da Cunha Group).; [4] Ryan, P. & Glass, J.P. (2001). Inaccessible Island Nature Reserve Management Plan. Government of Tristan da Cunha, Edinburgh, Tristan da Cunha. 65 pp.;