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.

hostplants

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), 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.viii.2018