Leveillula verbasci (Jaczewski) Golovin, 1956

on

Verbascum

gall

mycelium white, generally dense, felt-like, peristent, amphigenous; partly internal. Conidiophores long, thin, emerging through the stomata. Conidia single. The first conidium formed is broadly-ovoid, later ones are elliptic. Cleistothecia contain more than 20 asci, that have two spores. Appendages mostly numerous, mycelioid, attached below the equator, shorter than the diameter, irregularly branched.

hostplants

Scrophulariaceae, monophagous

Verbascum banaticum, blattaria, chaixii & subsp. austriacum, cheiranthifolium, densiflorum, longifolium, lychnitis, x neilreichii, nigrum, olympicum, phlomoides, pulverulentum, pyramidatum, sinuatum, songaricum, speciosum, szovitsianum, thapsiforme, thpasus, tiberiadis.

references

Braun (1995a), Braun & Cook (2012a), Klenke & Scholler (2015a).

mod 30.v.2018