Hyalopsora aspidiotus (Peck) Magnus, 1901

on Abies

gall

spermogonia on yellow spots of first-year needles. Aecia on yellowing needles. Aeciospores 21-14 x 16-19 µm, contents yellow, wall hyaline, thin, warty.

spermogonia, aecia

Pinaceae, monophagous

Abies alba, balsamea.

on Gymnocarpium

gall

uredinia hypophyllous, yellow, initially covered by the epidermis and the peridium, naked later. Urediniospores with a striking variation in thickness of the wall. Teliospores are formed in clusters of 2-7 within the epidermis cells of the host plant.

uredinia, telia

Woodsiaceae, monophagous

Gymnocarpium dryopteris, robertianum.

references

Brandenburger (1985a: 7, 14), Dietrich (2013a), Doppelbaur (1973a), Gäumann (1959a), González-Fragoso (1925a), Henderson (2000a), Jage, Scholler & Klenke (2010a), Klenke & Scholler (2015a), Kozłowska, Mułenko & Heluta (2015a), Kruse (2019a), Ludwig (1974a), Poelt (1986a), Poelt & Zwetko (1997a), Ruszkiewicz-Michalska (2006a), Schmid-Heckel (1985a), Termorshuizen & Swertz (2011a), Wilson & Henderson (1966a).