Gymnosporangium torminali-juniperini Fischer, 1910

Fungi, Basidiomycota, Pucciniomycetes, Pucciniales, Pucciniaceae

on Sorbus

gall

The slender, acute peridia, not fraying at their tip, are characteristic. The aecia strongly 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, monphagous

Sorbus aucuparia, chmaemespilus, dumestica, 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), Poelt & Zwetko (1997a).

24/04/2017

mod 28.vi.2017