Gymnosporangium tremelloides Hartig, 1882
on woody Rosaceae
gall
Aecia on reddish brown spots, some 3 mm large, on the underside of the leaves. The species stands apart by its large aeciospores: 25-35 × 30-50 µm.
hostplants
woody Rosaceae (Maloideae), oligophagous
Cydonia oblonga; Malus domestica, sylvestris; Pyrus communis; Sorbus aria, aucuparia, chamaemespilus, latifolia, tormialis.
on Juniperus
Juniperus communis, Loenen (Ge.) © Arnold Grosscurt
gall
Telia on the older branches, when moist yellow cushions, dry more like large scales, always much broader than high. Teliospores two-celled, with 3 germination pores in the upper, 2 in the lower cell, all without a papilla.
host plants
Cupressaceae, monophagous
Juniperus communis & var. saxatilis, oxycedrus.
references
Bahcecioglu & Kabaktepe (2012a), Blumer (1946a), Brandenburger (1985a: 29), Buhr (1964b), Doppelbaur & Doppelbaur (1973a), Erdoğdu, Hüseyin & Suludere (2010a), Gäumann (1959a), Helfer (2005a), Klenke & Scholler (2015a), Negrean (1997a), Poelt & Zwetko (1997a), Termorshuizen & Swertz (2012a), Zhao, Liu, Li & Cai (2016a).