Leveillula verbasci (Jaczewski) Golovin, 1956
on Verbascum
gall
mycelium white, generally dense, felt-like, persistent, 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.
host plants
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
Bahçecioğlu, Kabaktepe & Yildiz (2006a), Braun (1995a), Braun & Cook (2012a), Klenke & Scholler (2015a), Leysen (2017a).