​

on Blechnum

gall

uredinia hypophyllous, pustulate, yellow, with a semiglobular peridium; spores short club shaped, remotely spinulose, on a short, plump pedicel. From August on, during damp weather, the uredinia release a white mass of spores. Telia at the underside of brown parts of the hibernated fronds. The spores are formed in the epidermis cells; they are irregular in shape, thin-walled, and are composed of 1-70 cells.

uredinia, telia

Blechnaceae, monophagous

Blechnum spicant.

synonyms

Milesia blechni.

references

Brandenburger (1985a: 6, 15), Bubner, Buchheit, Friedrich ao (2019a), Doppelbaur & Doppelbaur (1973a), Eichhorn (1941a), Ellis & Ellis (1997a), Gäumann (1959a), Gjaerum & Dennis (1976a), Gjaerum & Sunding (1986a), González-Fragoso (1925a), Henderson (2000a, 2004a), Hick & Preece (1990a), Jage, Scholler & Klenke (2010a), Klenke & Scholler (2015a), Poelt & Zwetko (1997a), Roskam (2019a), Schmid-Heckel (1985a), Tănase & Negrean (2007a), Termorshuizen & Swertz (2011a), Tykhonenko & Hayova (2015a), Vanderweyen & Fraiture (2007a), Wilson & Henderson (1966a), Woods, Stringer, Evans & Chater (2015a).