Plant Parasites of Europe

leafminers, galls and fungi

Puccinia cardui-pycnocephali

Puccinia cardui-pycnocephali Sydow & Sydow, 1902

on Carduus

Puccinia cardui-pycnocephali: spores

Carduus bourgeanus, from González Fragoso (1924a): teliospores and two urediniospores

Puccinia cardui-pycnocephali: spores

Carduus pycnocephalus: teliospore and an aberrant urediniospore


no host plant alternation, only uredinia and telia. Uredinia dispersed, chestnut brown, pulverulent; urediniospores with 3-4 equatorial pores, each capped by a papilla. Telia also on the stem, dark brown, soon naked. Teliospores two-celled, elliptic, finely echinulate, c. 37 µm long. Pedicel hyaline, deciduous, up to 60 µm.

uredinia, telia

Asteraceae, narrowly monophagous

Carduus bourgeanus, pycnocephalus, tenuiflorus.

By Gäumann, and possibly on his authority also by Klenke & Scholler, “C. pycnocehalus” is interpreted as C. acanthoides; however, that is a different species.


many authors, including Termorshuizen & Swertz, and also the Index Fungorum (2016), consider this species conspecific with P. calcitrapae.


Brandenburger (1985a), Gäumnn (1959a), González Fragoso (1924a), Klenke & Scholler (2015a), Kruse (2019a), Losa España (1944a), Termorshuizen & Swertz (2011a), Unamuno (1942a).

Last modified 20.vii.2019