Enteromorpha lingulata J. Agardh, 1883: 143–144 (syntype localities: North Atlantic; Gulf of Mexico; Tasmania; New Zealand).—Hieronymus, 1895b: 22.— Reinbold, 1907: 554.— Schröder, 1912: 295.— Weber-van Bosse, 1913a: 54–55.— W.R. Taylor, 1966a: 343.— Rhyne, 1971: 53.— H. Joshi & V. Krishnamurthy, 1972: 120–121, figs. 1D, 2H,S.— Lawson, 1980: 13.— Untawale, Dhargalkar, & Agadi, 1983: [8].— Bolton & Stegenga, 1987: 168.— Farrell, Critchley, & Aken, 1993: 149.— Wynne, 1993: 20.
Enteromorpha compressa (Linnaeus) Nees var. lingulata (J. Agardh) Hauck, 1884 [1882–1885]: 428.—Hauck, 1888 [1886–1889]: 92.— Ramanathan, 1939: 375–398, figs. 1–74.— Biswas, 1949b: 36.— V. Krishnamurthy, 1954: 173.
INDIAN OCEAN DISTRIBUTION: Diego Garcia Atoll, India, Indonesia, Kenya, Madagascar, Maldives, Seychelles (Mahé Island), Singapore, South Africa, Tanzania.
Note: Womersley (1956: 352) merged this species into Enteromorpha clathrata (Roth) Greville (q.v.). According to Bliding (1963: 106), however, an examination of specimens in the Agardh Herbarium (in LD) reveals that E. lingulata is either conspecific with or closely related to E. flexuosa (Wulfen) J. Agardh subsp. flexuosa [p. 731].