Leveillula tropaeolicola Liu & Braun, 2012
mycelium amphigenous but mainly hypophyllous, white, persistent; the upper side of the leaves develop an irregular brown discolouration. Conidiophores long, thin, emerging through the stomata. Conidia formed one by one, in two forms. The first conidium formed is lanceolate, later ones are elliptic. Cleistothecia 150-240 µm; they contain up to 10-25 asci, that have two spores. Appendages in variable numbers, attached below the equator, shorter than the diameter; they are mycelioid, hyaline, 0-3 septate, not or just once branched.
Tropaeolum majus, minus, peregrinum.
Braun & Cook (2012a), Klenke & Scholler (2015a).