Urocystis ranunculi (Libert) Moesz, 1950
on Ranunculus
Ranunculus spec., Belgium, prov. Limbourg, Reppel, Abeekvallei, 13.viii.2021 © Carina Van Steenwinkel
underside of the leaves
spore balls
stronger maginificationa

Ranunculus repens, Bergen op Zoom, 7.v.2012
gall
when the sori are ripe and rupture, a black powdery-granular mass of spore balls is released. The spore balls consist of 1-3 spores; the cover of sterile cells that is the hallmark of Urocystis is reduced here to just a few cells.
host plants
Ranunculaceae, monophagous
Ranunculus acris, aduncus, alpestris, arvensis, brevifolius, breyninus, bulbosus & subsp. aleae, carpaticus, cortusifolius, creticus, flammula, glacialis, hyperboreus, monophyllus, montanus, nivalis, oreophilus, oxyspermus, paludosus, parnassifolius, pedatus, platanifolius, polyanthemos & subsp. nemorosus, pseudomontanus, repens, sardous, spicatus, strigulosus, villarsii.
synonyms
Tuburcinia ranunculi (Libert) Liro, 1922; ? Urocystis ranunculi-alpestris Hruby, 1932.
references
Almaraz (1998a), Beltran Tejera (1976a), Brandenburger (1972a), Buhr (1964b, 1965a), Denčev (1991a), Dietrich (2013a), Gjaerum (1976a), Ivić, Sever, Scheuer & Lutz (2013a), Jage, Scholler & Klenke (2010a), Klenke (2002a), Klenke & Scholler (2015a), Kozłowska, Mułenko & Heluta (2015a), Kruse (2019a), Kruse, Thiel, Klenke, ao (2022a), Lotze-Engelhard (2010a), Lutz & Vánky (2009a), Maire (1943a), Mayor (1975a), Mułenko, Sałata & Wołczańska (1995a), Negrean (1997a), Redfern & Shirley (2011a), Roskam (2009a), Savchenko & Heluta (2012a), Scholz & Scholz (2013a), Tomasi (2012a, 2014a), Vanderweyen & Fraiture (2014a), Vánky (1994a), Vánky & Abbasi (2013a), Vánky, Lutz & Bauer (2008b), Woods, Chater, Smith ao (2018a).