Phyllactinia ribes (Jaczewski) Zhao, 1985

Fungi, Ascomycota, Leotiomycetes, Erysiphales, Erysiphaceae

on Ribes

gall

mycelium both internal and external; external mycelium hypophyllous, thin, white. Appressoria scarce, variously formed. Conidia single, clavate, without fibrosin bodies. Conidiophores thin and long, foot-cell 100-250 ┬Ám. Cleistothecia hypophyllous with an equatorial circle of 4-11 stiff, acicular appendages that are abruptly swollen at their base, 1-2.5 as long as the diameter of the cleistothecium. Asci 10-25 with two spores.

hostplants

Grossulariaceae, monophagous

Ribes americanum, aureum, nigrum, rubrum, sanguineum, uva-crispa.

references

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

10/12/2015

mod 17.vii.2017