Pleurosigma diversestriatum Meister, 1934

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 : 94

Pleurosigma diversestriatum Meister ( Figure 83 )

Literature: ( Hendey 1970, p. 152, pl. 6, fig. 62; Sterrenburg 2001, p. 124, figs. 6, 15–18).

Description: Length 71–75 µm, width 15–18, oblique striae at the center 19–21 in 10 µm. Oblique striae cross each other at ca 65° at the center and the raphe curvature is about 19°. Ecology and distribution: This marine species has only been reported from warm waters in tropical and subtropical regions. Its occurrence, although rare in Antarctica, may expand its environmental preferences.

Figures

Figures 79–92: Marine benthic diatoms in Potter Cove, King George Island, Antarctica, summer 2015. (79) Gyrosigma arcuatum. (80) Gyrosigma fasciola. (81) Gyrosigma cf. obscurum. (82) Pleurosigma eudon var. kerguelensis. (83) Pleurosigm diversestriatum. (84) Pleurosigma strigosum. (85) Amphora gourdonii. (86) Amphora marina. (87, 88) Amphora sp. 1. (89) Amphora sp. 2. (90) Cylindrotheca closterium. (91, 92) Fragilariopsis cylindrus.