Fungi Outer Hebrides

Phylum: Basidiomycota   Family: Pucciniaceae

Gymnosporangium clavariiforme (Wulfen) de Candolle, 1805

Tongues of Fire

An uncommon rust fungus with two hosts. The aecial stage in the autumn can be found on various species of Rosaceae with the most common being hawthorn (Crataegus laevigata). The telial stage appears in spring, on juniper, as orange horn-type structures, most obvious in wet weather when they swell

Ellis & Ellis (1997) - Microfungi on Land Plants;
Termorshuizen & Swertz (2011) - Dutch Rust Fungi;
Wilson & Henderson (2011 reprint) - British Rust Fungi