Eragrostis rivalis, a riverside and coastal plant from the southwestern part of the former USSR, up to now wrongly identified with the Saharian E. aegyptiaca, is described as a species new to science. In desert regions of NE Africa E. aegyptiaca comprises two taxa, E. aegyptiaca subsp. aegyptiaca and subsp. humifusa; the latter subspecies is described as new to science.
References
E. Lavrenko
1940: Eragrostis Host. — Pp. 205–211 in:
E. Lavrenko
(ed.),
Flora URSR 2. — Kiev. Google Scholar
R. J. Rozevic
1934: Eragrostis Host. – Pp. 313–320 in:
V. L. Komarov
(ed.).
Flora SSSR 2. – Leningrad. Google Scholar
