Grammatophora undulata Ehrenberg

Joh, Gyeongje, 2021, Distribution and frequent occurrence of diatom taxa (Bacillariophyta) inhabiting warmer oceans in Seogwipo coast of Jeju Island, southernmost Korea, Phytotaxa 517 (1), pp. 1-67 : 19

23. Grammatophora undulata Ehrenberg ( Figs 61–64 )

Synonym: Grammatophora marina var. undulata (Ehrenberg) Peragallo & Peragallo.

Type locality: fossil in den Kreidemergeln Griechenlands, lebend zwischen Seeconferven bei Vera Cruz, Mexico .

References: Hustedt 1931 –1959, p. 48, fig. 576; Witkowski et al. 2000, p. 59, pl. 14, figs 8–11, 15, figs 1, 16, figs 5, 8; Lobban et al. 2012, p. 263, pl. 19, fig. 3, pl. 20, figs 1–3, pl. 44, fig. 2.

Morphometrics: Valves 50–60 (30–90) μm long, 8 (6–12) μm wide, and transapical striae 15–16 (14–20) in 10 μm.

Remarks: Grammatophora undulata is distributed in coast of warmer oceans, and, in Europe, only in the Mediterranean ( Hustedt 1931 –1959, Witkowski et al. 2000). This taxon occurred in Dongsha Islands, the northern South China Sea ( Yan et al. 2009), in coral-reefs and farmer-fish areas of Guam Island, and in other areas, Society Islands, Puerto Rico, and Mahé Island of the Seychelles ( Lobban et al. 2012), in Guadalupe Island of the western coast of the Baja California Peninsula, Mexico ( López-Fuerte et al. 2015), and in the Caribbean Sea of Colombia ( Vidal et al. 2017). It is a typical tropical taxon in warmer coasts. This species was found very rarely along the Seogwipo coast in Jeju Island, representing a new record for South Korea.

Figures

FIGURES 58–68. Diatom taxa of Seogwipo coast in Jeju Island (7). Figs 58–60. Ardissonea pulcherrima. Figs 61–64. Grammatophora undulata. Fig. 65. Bleakeleya notata. Fig. 66–68. Synedrosphenia gomphonema. Scale bars = 10 μm.