Puccinia violae (Schumacher) de Candolle, 1815
on Viola
Viola spec., Epen, Heimansgroeve, 3.v.2018 © Cor Zonneveld: aecia
Viola hirta, dunes near Wassenaar: aecia © Koen van Zoest
Viola labradorica, Dronten, 20.iv.2012 © Arnold Grosscurt
underside of the leaf, with aecia
Viola riviniana, Amstelveen, de Braak: aecia, 3.v.2014
Viola spec., Belgium, prov. Limbourg, Opglabbeek, Vallei van de Bosbeek, 5.ix.2018 © Carina Van Steenwinkel
detail, uredinia and telia
urediniospores
detail
same spores, other depth of focus
urediniospores, strong magnification
teliospores
teliospores, strongly magnified
Viola cf. riviniana, Amstelveen, Thijsse-park, 8.vii.2013: leaf with uredinia
urediniospores
Viola hirta, England, Vice County: Oxon, VC23: at left two telia, right two uredinia – in this species the uredinia are unusually dark © Malcolm Storey, BioImages
teliospores
Viola cf. riviniana, Amstelveen, Thijsse-park, 4.ix.2013: the pedicel quickly falls off
gall
no host plant alternation. Spermogonia honey-coloured, in dense small groups. Aecia yellow, cupulate with recurved margin, on galled and discoloured parts of leaves and petioles. Uredinia hypophyllous, light brown, soon naked, then pulverulent; spores ± globular, 16-21 x 18-28 µm, with 2 germination pores. Telia like the uredinia, but dark brown; sporen 2-celled, short-oval; wall thin, apically not thickened; germination pores with a distinct papilla, the one of the lower cell generally close to the separation wall; pedicel short, fragile.
host plants
Violaceae, monophagous
Viola alba, alpina, ambigua, arvensis, bertolonii, biflora, bubanii, calcarata, canina, cenisia, collina, cornuta, declinata, hirta, kitaibeliana, labradorica, lutea, mirabilis, odorata, palustris, paradoxa, pumila, pyrenaica, reichenbachiana, riviniana, rupestris, sieheana, stagnina, suavis, thomasiana, tricolor & subsp. curtisii, willkommii.
Also on cultivars.
synonyms
Puccinia aegra Grove, 1883; P. depauperans Sydow, 1903.
references
Bahçecioğlu & Kabaktepe (2012a), Bahçecioğlu, Kabaktepe & Yildiz (2006a), Blumer (1946a), Beltran Tejera (1976a), Brandenburger (1072a, 1985a: 392), Buhr (1965a), Coulianos & Holmåsen (1991a), Dauphin & Aniotsbehere (1997a), Doppelbaur & Doppelbaur (1973a), Ecott (2012a), Gäumann (1959a), Gjaerum (1982a, 1987a), Gjaerum & Sunding (1986a), González Fragoso (1922a, 1924a), Henderson (2000a), Jage, Kruse, Kummer ao (2013a), Jage, Scholler & Klenke (2010a), Klenke & Scholler (2015a), Kozłowska, Mułenko & Heluta (2015a), Kruse (2014a, 2019a), Losa España (1942a, 1944a), Marková & Urban (1988a), Mayor (1967a, 1970a), Pellicier (2001a), Preece & Hick (1994a), Redfern & Shirley (2011a), Roskam (2009a), Ruszkiewicz (2000a), Ruszkiewicz-Michalska (2006a), Schmid-Heckel (1985a), Scholler, Reinhard & Schubert (1996a), Scholler & Schubert (1993a), Skuhravá & Skuhravý (2009d), Termorshuizen & Swertz (2011a), Tomasi (2003a, 2014a), Tóth (1994a), Unamuno (1941b), Vanderweyen & Fraiture (2011a), Woods, Stringer, Evans & Chater (2015a).