Revisiting Potter Cove, King George Island, Antarctica, 12 years later: new observations of marine benthic diatoms Author Al-Handal, Adil Y. Author Torstensson, Anders Author Wulff, Angela text Botanica Marina 2022 Warsaw, Poland 2022-02-23 65 2 81 103 http://dx.doi.org/10.1515/bot-2021-0066 journal article 10.1515/bot-2021-0066 1437-4323 11000147 Pinnularia quadratarea (A. Schmidt) Cleve ( Figure 78 ) Literature: (Snoeijs and Vilbaste 1994, p. 94, fig. 182; Witkowski et al. 2000, p. 335, pl. 155, figs. 17–21). Description: Length 44–95 µm, width 10–13 µm, striae 8–10 in 10 µm. Remarks: In our previous records of 2003, this species was less common in Potter Cove but in the present study it appeared in high numbers with larger valve size. Ecology and distribution: Widely distributed marine species in temperate and polar regions (Cardinal et al. 1984; Hsiao 1980 ). Common in Potter Cove.