Puccinia circaeae Persoon, 1794

on Circaea

Puccinina circaeae and Erysiphe circaea on Circaea lutetiana

Circaea lutetiana, Zwolle-Zuid, 3.vii.2018 © Arnold Grosscurt, population under pressure by Puccinina circaeae and Erysiphe circaea

Puccinina circaeae: telia on Circaea lutetiana

leaf (underside) with telia of the soon-germinating type

Puccinina circaeae: telia on Circaea lutetiana

telia of the late-germinating type

Puccinina circaeae: telia on Circaea lutetiana

telium of the late-germinating type

Puccinina circaeae: telia on Circaea lutetiana

telium of the late-germinating type

Puccinina circaeae: telia on Circaea lutetiana

some telia at the underside of the lamina ar strongly enlarged. Perhaps they are late-germinating, but they also might be parasitised.

Puccinia circaeae on Circaea lutetiana

Circaea lutetiana, Houthem-St. Gerlach: upperside of the leaf

Puccinia circaeae on Circaea lutetiana

underside

Puccinia circaeae on Circaea lutetiana

telia, some with a hitish hue of basidia and basidiospores, formed by the early-germinating teliospores

Puccinia circaeae on Circaea lutetiana

detail

Puccinia circaeae teliospores

teliospores

Puccinia circaeae teliospores

teliospore (lenth, without the roughly equally long stalk, 42 µm)

Puccinia circaeae: galls on Circaea lutetiana

Circaea lutetiana, Belgium, prov Namur, Doische, Petit-Doische, RAVeL: upperside of a leaf © Stéphane Claerebout

Puccinia circaeae: telia op Circaea lutetiana

group of hypophyllous telia

gall

No host plant alternation, only telia. Most telia, at the underside of the leaves, germinate almost immediately, recognisable as a grey hue on top of the telium. A second type of telium, darker brown and formed at the underside of the midrib, on petioles and stems. contains spores that germinate only after hibernation.

host plants

Onagraceae, monophagous

Circaea alpina & subsp. pacifica, erubescens, x intermedia, lutetiana.

references

Afshan, Khalid & Niazi (2012a), Brandenburger (1985a), Buhr (1964b), Ellis & Ellis (1997a), Gjaerum (1986a), González Fragoso (1924a), Henderson (2000a, 2004a), Jage, Kruse, Kummer ao (2013a), Klenke & Scholler (2015a), Kozłowska, Mułenko & Heluta (2015a), Kruse (2019a), Kruse, Thiel, Frauenberger ao (2019a), Ludwig (1974a), Maier, Wingfield, Mennicken & Wingfield (2007a), Poelt & Zwetko (1997a), Preece & Hick (1994a), Redfern & Shirley (2011a), Roskam (2009a), Schmid-Heckel (1985a), Termorshuizen & Swertz (2011a), Tóth (1994a), Vanderweyen & Fraiture (2011a), Wilson & Henderson (1966a), Woods, Stringer, Evans & Chater (2015a).

mod 2.ix.2019