Coleosporium doronici Namysłowski, 1911
on Pinus
gall
see Coleosporium tussilaginis sensu lato.
spermogonia, aecia
Pinaceae, monophagous
Pinus mugo.
on Doronicum
gall
the teliospores 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, monophagous
Doronicum austriacum, columnae, glaciale subsp. calcareum.
synonyms
Coleosporium tussilaginis f. sp. doronici Helfer, 2013.
references
Brandenburger (1985a: 644), Gäumann (1959a), González-Fragoso (1925a), Helfer (2013), Klenke & Scholler (2015a), Poelt & Zwetko (1997a).