Silicularia rosea Meyen, 1834

(fig. 5 D)

Silicularia rosea Meyen, 1834: 204, pl. 35 figs 1 –11. – Vervoort & Watson, 2003: 442, fig. 108A–D.

Material examined. Stn. T14, 23.ii.2005: dense colonies, up to 5 mm high, bearing both male and female gonothecae, on Macrocystis pyrifera . Stn. T21, 31.x.2007: two fertile colonies (male and female), ca. 5 mm high, on Macrocystis pyrifera (NHM 2009.26).

Distribution. Previously recorded creeping on fronds of Macrocystis pyrifera from both Gough [Ritchie 1907, as S. hemisphaerica (Allman, 1888)] and Nightingale islands (Vanhöffen 1910, as S. rosea). This species has a circumglobal distribution in Antarctic and sub-Antarctic waters (Vervoort & Watson 2003).