Puccinia crepidis Schröter, 1887

on Crepis

Puccinia crepidis on Crepis tectorum: urediniospores

Crepis tectorum, urediniosporen (uit Gäumann, 1959a)

Puccinia crepidis on Crepis tectorum: teliospores

teliospores

Puccinia crepidis on Crepis capillaris

Crepis capillaris, Belgium, prov. Limbourg, Beringen, Mijn Kolenhaven, 7.vii.2018 © Carina Van Steenwinkel

Puccinia crepidis: uredinia on Crepis capillaris

leaf with uredinia

Puccinia crepidis uredinia on Crepis capillaris

detail

Puccinia crepidis uredinia on Crepis capillaris

uredinia also in the stem

Puccinia crepidis: urediniospores

urediniospores

Puccinia crepidis: urediniospores and teliospores

urediniospores and teliospores

Puccinia crepidis: teliospores

teliosporen

gall

No host plant alternation. Aecia hypophyllous, pustulate, scattered all over the leaf and often over all leaves of the plant; the leaves are discoloured and thickened. Uredinia mainly hypophyllous, 0.5 mm, bright brown; spores 16-26 x 19-26 µm, 2(-3) pores (Klenke & Scholler). Telia hypophyllous, often also on the stems, blackish brown. Teliospores two-celled, 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 biennis, capillaris, foetida, lampsanoides, nicaeensis, sancta subsp. nemauesensis, tectorum.

Mainly C. capillaris.

references

Brandenburger (1985a), Buhr (1964b), Dauphin & Aniotsbehere (1997a) Dietrich (2016b), Gäumann (1959a), Gjaerum (1986a, 1987a), Gjaerum & Dennis (1976a), González Fragoso (1924a), Jage, Klenke, Kruse ao (2016a), Jage, Kruse, Kummer ao (2013a), Klenke & Scholler (2015a), Kozłowska, Mułenko & Heluta (2015a), Kruse & Jage (2014a), Losa España (1942a), Marková & Urban (1988a), Tomasi (2014a), Vanderweyen & Fraiture (2011a).

mod 2.viii.2018