Puccinia crepidis Schröter, 1887

on Crepis

Crepis tectorum, urediniosporen (uit Gäumann, 1959a)

teliospores

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

leaf with uredinia

detail

uredinia also in the stem

urediniospores

urediniospores and 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.

host plants

Asteraceae, monophagous

Crepis alpina, biennis, canariensis, capillaris, foetida & subsp. glandulosa, lampsanoides, nicaeensis, sancta subsp. nemauesensis, tectorum, vesicaria & subsp. andryaloides + taraxacifolia.

? Also Tolpis coronopifolia (Beltran Tejera).

references

Bahçecioğlu & Kabaktepe (2012a), Beltran Tejera (1976a), Brandenburger (1985a: 679), Buhr (1964b), Dauphin & Aniotsbehere (1997a) Dietrich (2016b), Gäumann (1959a), Gjaerum (1986a, 1987a), Gjaerum & Dennis (1976a), Gjaerum & Sunding (1986a), 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).