Uromyces laburni (de Candolle) Otth, 1864

on Euphorbia

gall

see Aecidium euphorbiae.

spermogonia, aecia

Euphorbiaceae, narrowly monophagous

Euphorbia cyparissias, nicaeensis.


on Laburnum

Uromyces laburni on Laburnum watereri

Laburnum watereri, Hungary, Budapest, arboretum, 31.vii.2019 © László Érsek

Uromyces laburni: uredinia on Laburnum watereri

underside of a leaf with uredinia

Uromyces laburni: uredinia on Laburnum watereri

uredinia

gall

Uredinia amphigenous; spores remotely spinulose, with 3-6 randomly distributed pores. Telia amphigenous, dark brown; spores one-celled, very finely verrucose, warts often in parallel vertical lines; top with a low hyaline papilla; pedicel deciduous, short.

uredinia, telia

Fabaceae, ? monophagous

Laburnum alpinum, anagyroides, watereri.

According to Gäumann also on Cytisophyllum, Cytisus and Genista species,but that is not confirmed by Klenke & Scholler.

“Colutea istria”, mentioned by Savchenko ao cannot be interpreted.

references

Gäumann (1959a), Gjaerum (1982a, 1987a), Jage, Kruse, Kummer ao (2013a), Klenke & Scholler (2015a), Mayor (1973a), Termorshuizen & Swertz (2011a), Tóth (1994a), Vanderweyen & Fraiture (2008a).

mod 2.viii.2019