Puccinia barkhausiae-rhoeadifoliae Bubák, 1902

on Crepis

gall

No host plant alternation. Spermogonia between the aecia. Aecia hypophyllous, pustulate, scattered all over the leaf and often over all leaves of the plant; the leaves are discoloured and thickened. Uredinia dark brown; spores 20-22 x 22-27 µm, 2-3 pores above the equator. Telia blackish brown, pulverulent. Teliospores two-celled, 22-31 x 26-44 µm, egg-shaped, hardly constricted; wall uniform, rather thin, pustulate; pedicel hyaline, deciduous. The fungus is systemic; infected plants are stunted, pale green and do not flower.

hostplants

Asteraceae, narrowly monophagous

Crepis foetida & subsp. rhoeadifolia, mollis subsp. succisifolia, vesicaria subsp. andryaloides.

references

Brandenburger (1985a), Buhr (1964b), Gäumann (1959a), González Fragoso (1924a, Klenke & Scholler (2015a), Tomasi (2014a).

mod 31.vii.2018