Ulva flexuosa

Ulva flexuosa Wulfen

Ulva flexuosa Wulfen, 1803:1; Hayden et al., 2003:289, tbl. 4; Pedroche et al., 2005:26; Servière-Zaragoza et al., 2007:8.

Conferva flexuosa Roth, 1800:188–190, nom. illeg. [since it is a homonym of Conferva flexuosa O. F. Müller, 1782:5].

Enteromorpha flexuosa (Wulfen) J. Agardh, 1883:126; Collins, 1909b:203; Setchell and Gardner, 1920b:255; Taylor, 1945:38; Dawson, 1957b:5; Bliding, 1963:73, figs. 38–41; Huerta-Múzquiz and Tirado-Lizárraga, 1970:126; Chávez B., 1972:268; Huerta-Múzquiz and Garza Barrientos, 1975:6; Norris, 1976a:76, fig. 30; Devinny, 1978:358; Silva, 1979:340; Pedroche and González-González, 1981:63; R. Aguilar-Rosas, 1982:84; Schnetter and Bula Meyer, 1982:15, pl. 1: figs. A–F; L. Aguilar-Rosas et al., 1985:125; Oliva-Martínez and Ortega, 1987:127, pl. 3: figs. 4a,b; Ortega et al., 1987:77, pl. 13: figs. 53–55; L. Aguilar-Rosas and Pacheco-Ruíz, 1989:81; Sánchez-Rodríguez et al., 1989:39; De Lara-Isassi et al., 1989:102; Dreckmann et al., 1990:24; Mateo-Cid and Mendoza-González, 1991:27; Mateo-Cid and Mendoza-González, 1992:24; Mateo-Cid et al., 1993:51; González-González, 1993:443; Servière-Zaragoza et al., 1993:482; R. Aguilar-Rosas and M. Aguilar-Rosas, 1994:517; Mendoza-González et al., 1994:112; González-González et al., 1996:284; Mendoza-González and Mateo-Cid, 1996:74, 87, pl. 24: figs. 104–106; Leskinen and Pamilo, 1997:17; Bucio-Pacheco and Dreckmann, 1998:42; Yoshida, 1998:35; Mendoza-González and Mateo-Cid, 1998:24, 27; Servière-Zaragoza et al., 1998:169, 180; Rodríguez-Morales and Siqueiros-Beltrones, 1999:22; López et al., 2000:340; Cruz-Ayala et al., 2001:190; L. Aguilar-Rosas et al., 2002:235; Abbott and Huisman, 2004:48, fig. 6A–C; Wysor, 2004:215; Hernández-Herrera et al., 2005:146; Dreckmann et al., 2006:153.

Enteromorpha compressa var. flexuosa (Wulfen) Hamel, 1931a:65, fig. 48 (5,6).

Enteromorpha prolifera var. flexuosa (Wulfen) Doty, 1947:15; Dawson, 1961b:374.

Enteromorpha lingulata J. Agardh, 1883:143; Setchell and Gardner, 1930:137; Taylor, 1945:39; Huerta-Múzquiz and Tirado-Lizárraga, 1970:126, 131; Huerta-Múzquiz

and Garza Barrientos, 1975:6; León-Tejera et al., 1993:199, 204; Mendoza-González and Mateo-Cid, 1998:24.

Enteromorpha tubulosa (Kützing) Kützing, 1856:11, pl. 32: fig. 2; Dawson, 1945b:59; Taylor, 1945:38, “prox.”; Dawson, 1961b:374; Huerta-Múzquiz and Tirado-Lizárraga, 1970:126; Chávez B., 1972:268; Huerta-Múzquiz, 1978:335, 338; Huerta-Múzquiz and Mendoza-González, 1985:42.

Enteromorpha intestinalis var. tubulosa Kützing, 1845:247.

Algae cylindrical to slightly compressed, up to 10 cm tall and 0.5–5.0 mm wide, usually unbranched or sometimes sparsely branched (rarely with secondary branches), and without proliferations. Cells in surface view in longitudinal rows and transverse rows (evident in younger, narrower portions; not always distinct in older or broader portions); angular, quadrate to elongate, 8–15 µm wide by 10–20 µm long, with a parietal chloroplast and 1–2(–6) pyrenoids. Transverse section of 1 cell layer, 20–30 µm thick; with cells 12–20(–30) µm tall by 9–20 µm wide.

HABITAT. On rocks; high to low intertidal.

DISTRIBUTION. Gulf of California: El Tornillal to La Paz. Pacific coast: British Columbia to Costa Rica; Panamá; Colombia; Ecuador; Galápagos Islands; Chile; Hawaiian Islands; Japan.

TYPE LOCALITY. Duino (NW of Trieste), Italy, Adriatic Sea.