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).

mod 10.viii.2018