Silybum marianum, from González Fragoso (1924a): urediniospores and teliospores

gall

Spermogonia yellow, in large groups. No aecia. Uredinia amphigenous, chestnut brown. Telia mainly hypophyllous, long covered by the epidermis, eventually black. Mixed sori are common. Urediniosporen 15-17 x 26-38 µm, wall colourless with 3-6 germination pores. Teliospores two-celled, on a short pedicel.

host plants

Asteraceae, monophagous

Silybum marianum.

references

Bahçecioğlu & Kabaktepe (2012a), Brandenburger (1985a: 672), Gäumann (1959a), González Fragoso (1924a), Henderson (2000a, 2004a), Klenke & Scholler (2015a), Savchenko, Heluta, Wasser & Nevo (2014d), Savchenko, Wasser, Heluta & Nevo (2019a), Termorshuizen & Swertz (2011a).