Plant Parasites of Europe

leafminers, galls and fungi

Gymnosporangium gracile

Gymnosporangium gracile Patouillard, 1902

on Crataegus, Cydonia

gall

At this stage indistinguishable from Gymnosporangium clavariiforme.

spermogonia, aecia

Rosaceae, oligophagous

Crataegus monogyna; Cydonia oblonga.


on Juniperus

Gymnosporangium gracile: teliospores

Juniperus oxycedrus, from Gäumann (1959a): teliospores

gall

shrubs, infected by telia of this species develop characteristic witches’ brooms. Infected branches carry over their entire length orange, 2-5 mm long and less than a mm wide telia. The spores measure 12-18 x 50-80 µm; the pedicel is extremely long.

telia

Cupressaceae, monophagous

Juniperus oxyxedrus & subsp. macrocarpa.

notes

Mediterranean species.

references

Brandenburger (1985a: 29), Dauphin & Aniotsbehere (1997a), Gäumann (1959a), González-Fragoso (1925a), Helfer (2005a), Klenke & Scholler (2015a), Llorens i Villagrasa (1984a).

Last modified 10.viii.2018