Plant Parasites of Europe

leafminers, galls and fungi

Puccinia minussensis

Puccinia minussensis von Thümen, 1878

on Lactuca

gall

the fungus is unique by having two generations. In the first generation spermogonia, aecia, and telia are formed; the mycelium is perennial and systemic, disfiguring the entire plant: the internodes are lengthened, lank, and spiralled, the leaves are smaller, and flowering is impeded. The second generation, from August on, forms uredinia and telia; the plants that then are infected do not show any disturbance. Spermogonia with a sweet fragrance, epiphyllous, on the uppermost leaves. Aecia yellow, deeply embedded in the host tissue, opening by a pore, on the thicker veins. Uredinia epiphyllous; spores 20-25 x 23-26 µm. Telia black, also on the stems pulverulent; spores two-celled.

hostplants

Asteraceae, narrowly monophagpus

Lactuca sibirica, tatarica.

synonyms

Puccinia tatarica Tranzschel, 1904.

references

Brandenburger (1985a), Buhr (1964b), Gäumann (1959a), Heluta, Hayova, Tykhonenko ao (2010a), Jage, Klenke, Kruse ao (2016a), Klenke & Scholler (2015a), Mułenko, Piątek, Wołczańska ao (2010a).

19/12/2016

Last modified 11.viii.2017