Golovinomyces verbasci (Jaczewski) Heluta, 1988

on Verbascum

Golovinomyces verbasci on Verbascum spec.

Verbascum spec., Belgium, prov. Limburg, Ham, Immertse Bossen Carina Van Steenwinkel

Golovinomyces verbasci on Verbascum spec.

group of cleistothecia

Golovinomyces verbasci: young cleistothecium

young cleistothecium, unripe asci

Golovinomyces verbasci: ripe cleistothecium

cleistothecium with two-spored asci

Golovinomyces verbasciL conidiophore

Verbascum spec., Belgium, prov. Antwerp, Mol © Carina Van Steenwinkel: conidiophore

Golovinomyces verbasci: conidia

conidia

gall

mycelium amphigenous, well developed. Appressoria nipple-shaped. Conidia short-elliptic, formed in chains, without fibrosin bodies. Foot cell of conidiophore strait, 80-160 µm long. Cleistothecia mostly gregarious, 95-140 µm, with 8-20 two-spored asci. Appendages in varying number, equatorial and sub-equatorial, shorter than the diameter; they are mycelioid, septate, mostly unbranched.

hostplants

Scrophulariaceae, monophagous

Verbascum baldaccii, banaticum, blattaria, boerhavii, bombyciferum, chaixii & subsp. austriacum + orientale, densiflorum, glabratum, gnaphalodes, lanatum, longifolium, lychnitis, x neilreichii, nigrum & subsp. abietinum, olympicum, ovalifolium, phlomoides, phoeniceum, pulverulentum, speciosum, thapsus & subsp. crassifolium, virgatum.

synonyms

Erysiphe verbasci (Jaczewski) Blumer, 1933.

references

Braun (1995a), Braun & Cook (2012a), Bresinsky (2016a), Dynowska, Fiedorowicz & Kubiak (1999a), Jage, Klenke, Kruse ao (2016a), Jage, Kruse, Kummer ao (2013a), Klenke & Scholler (2015a), Kruse & Jage (2014a), Ruszkiewicz-Michalska (2006a), Scheuer & Bechter (2012a).

19/04/2017

pub 25.v.2017 · mod 13.viii.2017