Staurophora sp.

Al-Handal, Adil Y., Torstensson, Anders & Wulff, Angela, 2022, Revisiting Potter Cove, King George Island, Antarctica, 12 years later: new observations of marine benthic diatoms, Botanica Marina (Warsaw, Poland) 65 (2), pp. 81-103 : 90

Staurophora sp. ( Figure 42 )

Description: Valves elliptic to linear elliptic with broadly rounded apices, 48–55 µm long, 16–20 µm wide. Raphe very slightly bent in the middle of the valve, proximal endings simple and apart, distal endings deflected in opposite directions. Axial area narrow, central area large, expanding laterally to form a stauros not reaching valve margin. Striae radiate, 20–22 in 10 µm in the middle. Areole more distant near valve margin.

Ecology and distribution: A marine benthic species. Rare in Potter Cove.

Figures

Figures 39–59: Marine benthic diatoms in Potter Cove, King George Island, Antarctica, summer 2015. (39) Lyrella hennedyi. (40) Petroneis sp. (41) Petroneis plagiostoma. (42) Staurophora sp. (43–46) Achnanthes cf. groenlandica, (43, 44) raphe valve, (45) sternum valve, (46) two cells in girdle view. (47) Cocconeis californica. (48) Cocconeis californica var. kerguelensis. (49) Cocconeis costata var. hexagona. (50) Cocconeis dallmannii. (51) Cocconeis fasciolata. (52) Cocconeis imperatrix. (53) Cocconeis matsii. (54, 55) Cocconeis melchioroides. (56–59) Cocconeis orbicularis, (56, 59) sternum valve, (57, 58) raphe valve.