Puccinia scorzonerae (Schumacher) Jacky, 1899

on Podospermum, Scorzonera

Puccinia scorzonerae: spores

Scorzonera hirsuta, from González Fragoso (1924a): urediniospore and teliospores

gall

No host plant alternation. Spermogonia, uredinia, and telia amphigenous; there are no aecia. Uredinia brown, often in circles around the spermogonia on pale leaf spots. Spores ± globular, 23-30 x 28-31 µm, with 2 pores above the equator. The uredinia gradually turn into dark brown telia. Teliospores two-celled, finely verrucose, on a deciduous pedicel. Infected plants are not disfigured.

hostplants

Asteraceae, narrowly oligophagous

Podospermum purpureum, roseum; Scorzonera austriaca, hirsuta, hispanica, humilis, mollis, papposa.

references

Brandenburger (1985a), Buhr (1965a), Doppelbaur & Doppelbaur (1973a), Gäumann (1959a), González Fragoso (1924a), Klenke & Scholler (2015a), Poelt & Zwetko (1997a), Savchenko, Heluta, Wasser & Nevo (2014d), Termorshuizen & Swertz (2011a), Woods, Stringer, Evans & Chater (2015a).

mod 31.viii.2018