Gymnosporangium torminali-juniperini Fischer, 1910
on Sorbus
gall
The slender, acute peridia, not fraying at their tip, are characteristic. The aecia closely resemble those of Gymnosporangium cornutum, but the size of the aeciospores is somewhat different: 18-24 × 24-27 µm, rather than 16-25 × 21-29 µm in cornutum.
spermogonia, aecia
Rosaceae, monophagous
Sorbus aucuparia, chamaemespilus, domestica, hybrida, latifolia, mougeotii, torminalis.
Mainly on S. torminalis
on Juniperus
gall
only telia, semiglobular, up to 2 mm high, on the needles, light brown when dry; spores two-celled, 21-30 x 35 µm, with mostly one germination pore per cell, capped by a hyaline papilla.
telia
Cupressaceae, nauw monophagous
Juniperus communis s.str.
references
Brandenburger (1985a: 31), González-Fragoso (1925a), Helfer (2005a), Klenke & Scholler (2015a), Kruse (2019a), Poelt & Zwetko (1997a).