Order Rhopalodiales

Family Rhopalodiaceae (Karsten) Topachevs'kyi & Oksiyuk

Genus Cystopleura Brébisson ex O. Kuntze

• Cystopleura turgida (Ehrenberg) Kuntze – marine, littoral; benthic, periphyton; rare, everywhere (Бондарчук, 1970: Epithemia turgida (Ehrenberg) Kützing).

Genus Epithemia Brébisson

• Epithemia adnata (Kützing) Brébisson – freshwater; periphyton (Dressler, 2003).
• Epithemia sorex Kützing – freshwater; periphyton (Dressler, 2003).
• Epithemia zebra (Ehrenberg) Kützing – marine, littoral; benthic, periphyton; rare (Бондарчук, 1970).

Genus Rhopalodia O. F.Müller

• Rhopalodia brebissonii Krammer – freshwater; periphyton (Dressler, 2003).
• Rhopalodia gibba (Ehrenberg) O. F. Müller – marine, littoral; benthic, periphyton; in some areas abundant (Бондарчук, 1970). Freshwater; periphyton (Dressler, 2003: Rh. gibba var. gibba и Rh. gibba var. parallela (Grunow) H. Peragallo & M. Peragallo).
• Rhopalodia gibberula (Ehrenberg) O. F. Müller – marine, littoral; benthic, periphyton; in some areas abundant (Бондарчук, 1970).
• Rhopalodia musculus (Kützing) O. F. Müller – marine, littoral; abundant among blue-green algae. (Бондарчук, 1970; Rh. musculus var. mirabilis Fricke – rare, together with type variation). Marine, littoral; silty-sandy soil; benthic (Сабурова, 1995).
• Rhopalodia parallela (Grunow) O. Müller – marine, littoral, strongly diluted areas; benthic; not rare (Бондарчук, 1970).
• Rhopalodia rupestris (W. Smith) Krammer – freshwater; periphyton (Dressler, 2003).

rus: Порядок Rhopalodiales