Peronospora romanica Săvulescu & Rayss, 1932

on Medicago

Medicago lupulina, Huissen, Huissense Waard, Zwanewater (ge), 25.x.2021 © Kees van Oorde (scale bar = 2.5 µm)

infected leaf, underside

sporangiophore

gall

development of the plant disturbed; upper side of the lef with yellow spots. Underside there with a greyish purple down of 0.6 mm high erect conidiophores that apically several times are dichotomously branching, each branch ending in a conidium of 13-25 x 15-28 µm with a reticulate surface.

host plants

Fabaceae, narrowly monophagous

Medicago lupulina, minima.

synonyms

Peronospora medicaginis-minimae Gaponenko, 1972.

references

Brandenburger (1985a: 302), Buhr (1964b), Chater, Woods, Stringer, ao (2020a), Doppelbaur & Doppelbaur (1973a), Doppelbaur, Huber & Poelt (1965a), García-Blázquez, Constantinescu, Tellería & Martín (2007a), Göker, García-Blázquez, Voglmayr ao (2009a), Gustavsson (1991a), Hafellner (1980a), Jage, Klenke, Kruse ao (2017a), Jage, Kruse, Kummer ao (2013a), Klenke & Scholler (2015a), Kozłowska, Mułenko & Heluta (2015a), Kruse (2019a), Müller (2015a), Müller & Kokeš (2008a), Negrean, Constantinescu & Denchev (2004a), Ruszkiewicz-Michalska (2006a), Săvulescu (1948a), Voglmayr (2003a).