Fusamen amentorum (De Lacroix) von Arx, 1957

on Salix

gall

fungus infection of the female catkins (axis of the catkin and pedicels), producing a red spore mass that swells in humid weather and then is gelatinous. The spores, conidia, are formed in subcuticular acervuli; they are elliptic and measure 5-7 x 14-18 µm.

host plants

Salicaceae, monophagous

Salix.

synonyms

Calogloeum amentorum (Delacroix) Nannfeldt, 1931.

references

Brandenburger (1985a: 49), Buhr (1965a).