Phacus, Dujardin, 1841

Levanets, Anatoliy, Vuuren, Sanet Janse Van, Łukomska-Kowalczyk, Maja & Zakryś, Bożena, 2025, Annotated checklist of photosynthetic freshwater euglenids (Euglenales: Euglenaceae and Phacaceae) from southern Africa, Phytotaxa 710 (1), pp. 22-56 : 51

154. Phacus unguis Pochmann

= Phacus orbicularis var. minor F.E.Fritsch & F.Rich

SA: Fritsch, Rich 1930 [Northern Cape Province, Klip Bank, Hay, dark-green coating in fountain of running water, slightly shaded by trees, July 1922, leg. H.E. Louw; Northern Cape Province, Newlands (now Delportshoop), floating in sun in water tank, February 1923, leg. Elliott Young; Northern Cape Province, Honeynest Kloof, free-floating in sunny reservoir, November 1923]; Fritsch, Rich 1937 [Mpumalanga Province, near Belfast, Belfast Pan, 9 October 1913].— ZA: Thomasson 1980 [Lake Kariba, sample 179, station 2526, 9 August 1969].

Note. The cell illustrated in Fritsch & Rich (1930: Fig. 25H-K) is possibly a deformed cell of P. caudatus .