Steinera subantarctica (Øvstedal) Ertz 2017

Ertz, Damien, Poulsen, Roar S., Charrier, Maryvonne & Søchting, Ulrik, 2017, Taxonomy and phylogeny of the genus Steinera (Arctomiales, Arctomiaceae) in the subantarctic islands of Crozet and Kerguelen, Phytotaxa 324 (3), pp. 201-238 : 232-233

Steinera subantarctica (Øvstedal) Ertz comb. nov.

MycoBank: MB 822692 Basionym: Arctomia subantarctica Øvstedal , in Øvstedal & Gremmen, South African Journal of Botany 67: 554 (2001). Type:—PRINCE

EDWARD ISLANDS. Prince Edward Island, N slope of Kent Crater, 250 m, on cushions of Grimmia and Andreaea on boulders, 15

May 1994, N.J.M. Gremmen 94-245 (holotype BG!).

Notes:

1. The species originally described in the genus Arctomia is nested in the Steinera clade of our phylogenetic trees (Figs. 2–3). Therefore, the species is combined into Steinera .

2. The species was described from the subantarctic island of Prince Edward, has also been recorded from South America (http://timwheelerphotography.com; Tim Wheeler 2483), and is also present in the Falkland Islands (A. Fryday pers. comm.). It seems to be absent from Crozet and Kerguelen.

3. In the original description ( Øvstedal & Gremmen 2001), the figure of Arctomia subantarctica (fig. 2) is identical to figure 8 of the same publication and erroneously represents Verrucaria species.

Additional examined specimen: PRINCE EDWARD ISLANDS. N-rim of Kent Crater, 250 m, on Racomitrium crispulum moss cushions on rock, exposed, 15 May 1994, N.J.M. Gremmen 94-235b (BG).