Puccinia petasites-melicae Gäumann, 1942
on Petasites
gall
Apart from the host plant not distinguishable from Puccinia poarum.
spermogonia, aecia
Asteraceae, monophagous
Petasites albus, hybridus, paraddoxus.
on Melica
gall
uredinia mostly epiphyllous, yellow, sometimes with some clavate or capitate paraphyses; spores with about 6 indistinct germination pores. Telia hypophyllous, small, black, long covered by the epidermis, divided into small sections by many brown, clavate paraphyses; spores two-celled, 19-23 x 49-55 µm, wall smooth, pedicel persistent.
uredinia, telia
Poaceae, narrowly monophagous
Melica nutans.
synonyms
Puccinia petasiti-melicae.
references
Brandenburger (1985a: 648, 768), Buhr (1965a), Gäumann (1959a), Klenke & Scholler (2015a).
Last modified 9.xii.2022