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on grasses

Poa pratensis, Denekamp, lg. Singraven

all lower leaves in this population were occupied by uredinia

uredinia

the outer layer of the uredinia consists of the heads of the numerous parahyses

the paraphyses often are constricted below the head

two images of the same urediniospore

Poa pratensis, Nieuwendam: uredinia on the leaf sheaths

even in the inflorescence

gall

Uredinia never in long stripes, yellowish or orange brown, with many hyaline paraphyses that bear a distinct head and often are sharply bent just below; spores with 10-12 indistinct germination pores. Telia rare, hypophyllous, small, blackish brown, long covered by the epidermis, with brown paraphyses.

uredinia, telia

Poaceae, oligophagous

Alopcurus pratensis; Calamagrostis arundinacea; Catabrosa aquatica; Danthonia decunbens; Festuca halleri, ovina, stricta subsp. sulcata, versicolor; Lolium perenne; Miilium effusum; Ochlopoa annua; Piptatherum paradoxum; Poa angustifolia, compressa, nemoralis, palustris, pratensis, trivialis; Schedonorus arundinaceus.

synonyms

Puccinia brachypodii var. poae-nemoralis (Otth) Cummins & Greene 1966; P. milii Eriksson, 1895; P. poae-sudeticae Jørstad, 1932; P. thalictri-poarum Fischer & Mayor, 1925.

references

Blumer (1946a), Brandenburger (1985a), Chlebicki & Lembicz (2001a), Gäumann (1959a), Gjaerum & Dennis (1976a), González Fragoso (1924a), Jage, Kruse, Kummer ao (2013a), Jage, Scholler & Klenke (2010a), Klenke & Scholler (2015a), Kruse (2014a), Kyiashchenko (2011a), Liu & Hamilton (2010a, 2013a), Ludwig (1974a), Marková & Urban (1988a), Mułenko, Sałata & Wołczańska (1995a), Saba & Khalid (2013a), Preece & Hick (1994a), Scholler, Reinhard & Schubert (1996a), Ruszkiewicz-Michalska (2006a), Scheuer & Bechter (2012a), Termorshuizen & Swertz (2011a), Vanderweyen & Fraiture (2011a), Woods, Stringer, Evans & Chater (2015a).

27/05/2017