Plant Parasites of Europe

leafminers, galls and fungi

Erysiphe ulmi var. ulmi

Erysiphe ulmi var. ulmi Castagne, 1845

on Ulmus

Erysiphe ulmi var. ulmi on Ulmus spec.

Ulmus spec., Belgium, prov. Antwerp, Meerhout © Carina Van Steenwinkel

Erysiphe ulmi var. ulmi on Ulmus spec.

mycelium with cleistothecia

Erysiphe ulmi var. ulmi: cleistothecium on Ulmus spec.

cleistothecium

Erysiphe ulmi var. ulmi: asci

asci

Erysiphe ulmi var. ulmi: appendages

appendages

Erysiphe ulmi var. ulmi: appressoria

appressoria

gall

mycelium amphigenous, thin, white. Appressoria lobed, mostly solitary. Conidia formed solitary, elliptic, without fibrosin bodies. Foot cell of conidiophore curved at the very base. Cleistothecia 75-110 µm, with 3-6 asci, containing 2(-3) spores. Appendages 9-40, equatorial, 0.8-2 x the diameter; they are stiff, almost straight, aseptate; apices somewhat thickened, closely uncinate.

host plants

Ulmaceae, monophagous

Ulmus glabra, laevis, minor.

synonyms

Erysiphe bivonae (Léveillé) Tulasne & Tulasne, 1881; Uncinula clandestina (Bivona-Bernardi) Schröter, 1893.

references

Brandenburger (1985a: 68), Braun (1995a), Braun & Cook (2012a), Dietrich (2013a), Heluta, Takamatsu, Voytyuk & Shiroya (2009b), Jage, Klenke & Kummer (2010a), Jage, Kruse, Kummer ao (2013a), Klenke & Scholler (2015a), Leysen (2013a), Melgarejo Nárdiz, García-Jiménez, Jordá Gutiérrez ao (2010a), Unamuno (1942a).

Last modified 24.v.2019