Erysiphe elevata (Burrill) Braun & Takamatsu, 2000

on Catalpa

Catalpa spec., Belgium, prov. Limburg, Ham, Oostham © Carina Van Steenwinkel

dense occupation by cleistothecia

cleistothecium

appendages

Catalpa spec., België, prov. Antwerpen, Mol, Donk © Carina Van Steenwinkel: foot cell of the conidiophore generally with a bend

appressoria

gall

mycelium amphigenous, but best developed at the upper side, ± persistent, in patches. Conidia solitary, elliptic, without fibrosin bodies. Foot-cell of conidiophore generally curved. Cleistothecia often formed, mostly epiphyllous, with 4-8 asci, that contain 4-5 spores. Appendages 4-15, equatorial, 1-6 x the diameter; they are mycelioid, with maximally 1, basal, septum, mostly hyaline, flaccid; unbranched, but the very tip with a few short dichotomous branches.

host plants

Bignoniaceeae, monophagous

Catalpa bignonioides, x erubescens, ovata, speciosa.

references

Ale-Agha, Bolay, Braun ao (2004a), Bacigálová & Marková (2006a), Beenken & Senn-Irlet (2016a), Braun & Cook (2012a), Bresinsky (2016a), Heluta, Dzyunenko, Cook & Isikov (2009a), Henricot (2009a), Jage, Klenke & Kummer (2010a), Jage, Kruse, Kummer ao (2013a), Klenke & Scholler (2015a), Kruse (2014a, 2019a), Leysen (2013a), Milevoj (2004a), Mułenko, Piątek, Wołczańska ao (2010a).