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on Asteriscus, Pallenis

gall

the teliospsores are arranged like basalt columns, on top covered by a layer of a waxy substance. Initially they are one-celled, but in the end meiosis takes place, resulting in a chain of four haploid cells. Each one germinates under formation of a sterigma, on top of which eventually a spore will be formed (Mims & Richardson).

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

uredinia, telia

Asteraceae, narrowly oligophagous

Asteriscus aquaticus; Pallenis maritimus.

Possibly also Asteriscus imbricatus; Pallenis spinosa.

synonyms

Coleosporium tussilaginis f. sp. inulae Helfer, 2013; Uredo asterisci-aquatici (Saccardo) Gjaerum, 1990.

references

Gäumann (1959a), Helfer (2013), Klenke & Scholler (2015a), Mims & Richardson (2005a), Savchenko, Heluta, Wasser & Nevo (2014c), Savchenko, Wasser, Heluta & Nevo (2019a).