Rebecca Green emend. Véron

Figs 7–9

Included species

Rebecca salina (Carter) Green 2000 . – Nephrochloris salina Carter 1937: pl. 2, figs 10–22. – Pavlova mesolychnon van der Veer 1969: figs 1–21. – Pavlova salina (Carter) Green 1976: pls. 1–2.

Rebecca helicata (van der Veer) Green 2000 . – Pavlova helicata van der Veer 1972: figs 1–8.

Rebecca billardiae sp. nov.

Emended description

Cells solitary, free-swimming, sometimes immobile, elongated and slightly compressed or angular to almost cubic, with two unequal flagella and short haptonema. Longer anterior flagellum with fine nontubular hairs, posterior flagellum vestigial. A pit or canal penetrating the cell near the long anterior flagellum. Clavate or mono-constricted scales on the cell body and rows of di- or trimeric scales on the anterior flagellum. Pale yellow-green to golden-brown bilobed single chloroplast with parallel and helicoidal thylakoid arrangement, stigma and pyrenoid absent.