Puccinia poarum Nielsen, 1877

on Tussilago

Puccinia poarum; leaf upperside

Tussilago farfara, Dronten: upperside of the leaf; © Arnold Grosscurt

Puccinia poarum aecia

underside of the leaf with aecia

Puccinia poarum: aeciospores being squeezed out

Tussilago farfara, Houthem-St. Gerlach: in a quiet situation the aeciospores are squeezed out in a small column

Puccinia poarum: aeciospores

aeciospores

Puccinia poarum: peridium cells

a group of peridium cells

Puccinia poarum: peridium cells

same cells at another focal plane

Puccinia poarum: spermogonia on Tussilago farfaraPuccinia poarum: spermogonia on Tussilago farfara

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

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

Mycodiplosis coniophaga.

references

Alaei, De Backer, Nuytinck ao (2009a), Bellmann (2012a), Blumer (1946a), Brandenburger (1985a), 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).

mod 6.ix.2019