Erysiphe ulmi var. ulmi Castagne, 1845

Fungi, Ascomycota, Leotiomycetes, Erysiphales, Erysiphaceae

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.

hostplants

Ulmaceae, monophagous

Ulmus glabra, laevis, minor.

synonyms

Uncinula clandestina (Bivona-Bernardi) Schröter, 1893.

references

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

02/04/2017

pub 25.v.2017 · mod 17.vii.2017