Coleosporium asterum (Dietel) Sydow & Sydow, 1914

on Solidago

gall

in Europe only uredinia are known: bright yellow, pulverulent, mainly hypophyllous.

The uredinia and telia of Coleosporium species morphologically are indistinguishable. For pictures see for instance C. melampyri en >C. tussilaginis.

uredinia, telia

Asteraceae, narrowly oligophagous

Callistephus chinensis; Soidago canadensis, gigantea, sempervirens, virgaurea.

In North America also Symphyotrichum ciliolatum.

notes

originally a North American species, that also has colonised the European Solidago virgaurea.

references

Bahcecioglu & Kabaktepe (2012a), Beenken & Senn-Irlet (2016a), Klenke & Scholler (2015a), Maier, Begerow, WeiƟ & Oberwinkler (2003a), McTaggart, Geering & Shivas (2014a), Spooner & Butterfill (1999a).

mod 28.iii.2019