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Strigula buxi Chodat

Strigula smaragdula auct. europ. p.p.

Strigula elegans auct. europ. p.p.

Description

     Thallus thin, usually circular forming a crust on the surface of the leaf, lobed around the edge which gives it the appearance of a small faded flower placed on the leaf, 2-6 mm in diameter, green, greenish when young but becoming white-yellowish, ocher-yellow, brown-ocher in patches with age (cockade appearance). Perithecia almost completely immersed in the thallus, black and shiny with a distinct ostiole. Spores elliptical, 1-septate, 14-24 x 4-6 µm. Pycnidia in general numerous giving two kinds of macroconidia: bi or tetracellular with a mucous prolongation in the form of whip. Photobiont: Cephaleuros. Thermophilic species of subtropical origin coming on the leaves of Buxus sempervirens in shade and in damp places.

 

 

 

Strigula buxi Le Faou 1
Bernard BOUFFINIER

Strigula buxi Le Faou 2
Bernard BOUFFINIER

Strigula buxi Le Faou 3
Bernard BOUFFINIER

Strigula buxi Le Faou 4
Bernard BOUFFINIER

Strigula buxi Le Faou 5
Bernard BOUFFINIER

Strigula buxi Le Faou 6
Bernard BOUFFINIER