Erysiphe polygoni de Candolle, 1821

on Polygonaceae

Erysiphe polygoni on Polygonum aviculare

Polygonum aviculare, Belgium, prov. Limbourg, Sint-Martens-Voeren © Carina Van Steenwinkel

Erysiphe polygoni: conidiophore

conidiophpore

Erysiphe polygoni: appressorium

appressorium

Erysiphe polygoni: conidium

conidium

Erysiphe polygoni on Polygonum aviculare

Polygonum aviculare, Amstelveen

Erysiphe polygoni: conidia

two conidia

Erysiphe polygoni on Polygonum aviculare

Polygonum aviculare, Belgium prov. Antwerp, Meerhout © Carina Van Steenwinkel

Erysiphe polygoni: cleistothecium

cleistohecium

gall

mycelium amphigenous, white, mostly persistent. Appressoria lobed, single or paired. Conidia solitary, without fibrosin bodies, cylindrisch. Foot-cell of conidiophore straight. Cleistothecia with 3-10 asci, containing 3-4 spores. Appendages numerous, sub-equatorial, 0.3-2.5 the diameter; they are mycelioid, in variable proportion irregularly branched, septate, ultimately brown.

hostplants

Polygonaceae, oligophagous

Fagopyrum esculentum, tataricum; Fallopia baldschuanica, convolvulus, dumetorum; Persicaria amphibia, bistorta, chinensis, hydropiper, lapathifolia, maculosa, minor, mitis, vivipara; Polygonum arenastrum, aviculare; Rheum officinale, rhaponticum, rhabarbarum; Rumex acetosa, acetosella, conglomeratus, crispus, hydrolapathum, maritimus, obtusifolius, palustris, patientia, x pratensis, rugosus, sanguineus, scutatus, stenophyllus, thyrsiflorus.

Very common on Polygonum aviculare.

references

Blumer (1946a, 1967a), Brandenburger (1985a: 81), Braun (1995a), Braun & Cook (2012a), Bresinsky (2016a), Czerniawska (2001a), Doppelbaur & Doppelbaur (1973a), Dynowska, Fiedorowicz & Kubiak (1999a), Ellis & Ellis 1997), Jage, Klenke, Kruse ao (2016a), Jage, Kruse, Kummer ao (2013a), Klenke &am; Scholler (2015a), Kozłowska, Mułenko & Heluta (2015a), Korytnianska & Popova (2012a), Kruse (2014a), Kruse & Jage (2014a), Losa España (1944a), Negrean & Denchev (2004a), Ruszkiewicz-Michalska (2006a), Scholler, Reinhard & Schubert (1996a), Sucharzewska, Dynowska, Kubiak ao (2012b), Tóth (1994a) Unamuno (1941a, 1942a).

25/05/2017

pub 25.v.2017 · mod 12.viii.2017