Erysiphe polygoni de Candolle, 1821

Fungi, Ascomycota, Leotiomycetes, Erysiphales, Erysiphaceae

op Polygonaceae

on Polygonaceae

Polygonum aviculare, België, prov. Limburg, Sint-Martens-Voeren © Carina Van Steenwinkel

Erysiphe polygoni on Polygonum aviculare

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

conidiofoor

Erysiphe polygoni: conidiophore

conidiophpore

appressorium

Erysiphe polygoni: appressorium

appressorium

conidium

Erysiphe polygoni: conidium

conidium

Polygonum aviculare, Amstelveen

Erysiphe polygoni on Polygonum aviculare

Polygonum aviculare, Amstelveen

twee conidia

Erysiphe polygoni: conidia

two conidia

Polygonum aviculare, België, prov. Antwerpen, Meerhout © Carina Van Steenwinkel

Erysiphe polygoni on Polygonum aviculare

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

cleistohecium

Erysiphe polygoni: cleistothecium

cleistohecium

gal: mycelium beiderzijdig, wit, veelal blijvend. Appressoria gelobd, al dan niet gepaard. Conidia solitair, zonder fibrosine-lichaampjes, cylindrisch. Basale cel van de conidiofoor recht. Cleistothecia met 3-10 asci, die 3-4 sporen bevatten. Aanhangsels talrijk, sub-equatorial, 0.3-2.5 x de diameter; ze zijn mycelioid, in uiteenlopende mate onregelmatig vertakt, gesepteerd, uiteindelijk bruin.

gall: mycelium amphigous, 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.

waardplanten: Polygonaceae, oligofaag

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; Rumexacetosa, acetosella, conglomeratus, crispus, hydrolapathum, maritimus, obtusifolius, palustris, patientia, x pratensis, rugosus, sanguineus, scutatus, stenophyllus, thyrsiflorus.

Zeer gewoon op Polygonum aviculare.

Very common on Polygonum aviculare.

literatuur:

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, 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