Deightoniella roumeguerei (Cavara) Constantinescu, 1983

on Phragmites

Deightoniella roumeguerei on Phragmites australis

Phragmites australis, Belgium, prov. Antwerp, Geel, Municipl Fish Pond, 3.viii.2019 © Carina Van Steenwinkel

Deightoniella roumeguerei on Phragmites australis

leaf spots

Deightoniella roumeguerei on Phragmites australis

detail

Deightoniella roumeguerei: conidiophores

two conidiophores

Deightoniella roumeguerei: conidiophores

conidia formation

Deightoniella roumeguerei: conidia

conidia

Deightoniella roumeguerei: conidium

conidium

gall

Resembles D. arunudinacea, but the infection is localised, not systemic, and the fungus does not cover almost the entire leaf, but is restricted to some mm wide, and up to 2 cm long brown to dark brown spots. Mature conidia of arundinacea are cone-shaped and 2-septate, those of roumeguerei are ovate, 1-septate.

host plants

Poaceae, monoph443445agous

Phragmites australis.

synonyms

Utrechtiana cibiessia Crous & Quaedvlieg, 2011.

references

Constantinescu (1983a), Crous, Quaedvlieg & Groenewald (2011a), Van Ryckegem (2005a).

mod 12.viii.2019