Puccinia poarum Nielsen, 1877
on Tussilago
Tussilago farfara, Dronten: upperside of the leaf; © Arnold Grosscurt
underside of the leaf with aecia
Tussilago farfara, Houthem-St. Gerlach: in a quiet situation the aeciospores are squeezed out in a small column
aeciospores
a group of peridium cells
same cells at another focal plane
Tussilago farfara, Amstelveen, Schinkelbos: the spermogonia are always epiphyllous, usually in the centre of the yellow spot that marks an aecium, but sometimes they mark the beginning only.
gall
Spermogonia numerous, yellow, epiphyllous. Aecia hypophyllous.
spermogonia, aecia
Asteraceae, monophagous
Tussilago farfara.
on Poa
gall
uredinia mostly epiphyllous, yellow, without paraphyses; spores sporen 16-18 x 18-21 µm with several, indistinct germination pores. Telia generally hypophyllous, brown; spores two-celled, 17-24 x 31-60 µm; wall apically flattened, thickened;, pedicel short, brown, persistent pedicel.
uredinia, telia
Poaceae, narrowly oligophagous
Ochlopoa annua; Poa alpina, bulbosa, chaixii, compressa, nemoralis, palustris, pratensis, rehmanii, trivialis.
synonyms
Puccinia poae-alpinae Eriksson, 1923; P. poae-trivialis Bubák, 1905.
In Puccinia cognatella Bubák, 1909 next to the two-celled teliospores also one-celled spores occur; the teliospores also are a bit larger: 15-25 x 45-62 µm.
predators
references
Alaei, De Backer, Nuytinck ao (2009a), Bahçecioğlu & Kabaktepe (2012a), Bellmann (2012a), Blumer (1946a), Brandenburger (1985a: 652, 771, 772), Buhr (1965a), Coulianos & Holmåsen (1991a), Dauphin & Aniotsbehere (1997a), Doppelbaur & Doppebaur (1968a, 1973a), Ellis & Ellis (1997a), Gönczö & Révay (1981a), González Fragoso (1924a), Henderson (2000a, 2004a), Jage, Klenke, Kruse ao (2016a), Jage, Kruse, Kummer ao (2013a), Jage, Scholler & Klenke (2010a), Jost (1087a), Klenke & Scholler (2015a), Kozłowska, Mułenko & Heluta (2015a), Kruse (2014a, 2019a), Kruse & Jage (2014a), Liu & Hamilton (2010a, 2013a), Liu, Szabob, Hambleton, Anikster & Kolmer (2013a), Llorens i Villagrasa (1984a), Losa España (1942a), Ludwig (1974a), Maier, Wingfield, Mennicken & Wingfield (2007a), Marková & Urban (1988a), Mayor (1970a), Mułenko, Sałata & Wołczańska (1995a), Negrean (1996a,b), Pellicier (2001a), Poelt & Zwetko (1997a), Preece & Hick (1994a), Redfern & Shirley (2011a), Roskam (2009a), Ruszkiewicz-Michalska (2006a), Schmid-Heckel (1985a), Termorshuizen & Swertz (2011a), Tomasi (2014a), Tóth (1994a), Vanderweyen & Fraiture (2011a), Wilson & Henderson (1966a), Woods, Stringer, Evans & Chater (2015a).