Puccinia phragmitis

Puccinia • Pucciniales • Pucciniomycetes • Basidiomycota • fungi • plant diseases • pests-diseases-weeds

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aecia of Puccinia phragmitis (click on image to enlarge it)
Author(s): Bj. Schoenmakers
Source: Wikimedia Commons

close-up of aecia of Puccinia phragmitis (click on image to enlarge it)
Author(s): Malcolm Storey
Source: BioImages

Puccinia phragmitis (Schumach.) Körn. 1876

This fungus causes a rust disease on reeds of the genus Phragmites. On this host, elongated, yellow uredinia and later brown-black telia are formed. The urediniospores are egg-shaped with a size of around 25-30 x 20 µm, as well as an echinulate surface. Varieties with shorter urediniospores have been also described. The teliospores are 2-celled with a length of about 50 µm and a long pedicel.

In spring, aecia develop on alternate host plants of the genus Rumex. Other alternate hosts have been also reported.