Dark Leaved Willow

In Great Britain and/or Ireland:
Foodplant / saprobe
densely crowded, pustular, plurilocular stroma of Cytospora coelomycetous anamorph of Cytospora fertilis is saprobic on branch of Salix myrsinifolia

Foodplant / saprobe
often astromatic, prominent, loculi in a circle pycnidium of Cytospora coelomycetous anamorph of Cytospora fugax is saprobic on bark of Salix myrsinifolia

Foodplant / gall
larva of Euura mucronata causes gall of live bud and bud-peduncle of Salix myrsinifolia

Foodplant / parasite
mostly hypophyllous, subepidermal telium of Melampsora epitea parasitises live leaf of Salix myrsinifolia

Foodplant / open feeder
larva of Nematus flavescens grazes on leaf of Salix myrsinifolia
Other: major host/prey

Foodplant / open feeder
larva of Nematus stichi grazes on leaf of Salix myrsinifolia
Other: major host/prey

Foodplant / gall
larva of Pontania arcticornis causes gall of leaf (midrib underside) of Salix myrsinifolia

Foodplant / gall
larva of Pontania dolichura causes gall of leaf (upperside) of Salix myrsinifolia
Other: major host/prey

Foodplant / gall
larva of Pontania harrisoni causes gall of leaf (midrib underside) of Salix myrsinifolia

Foodplant / gall
larva of Pontania pustulator causes gall of leaf of Salix myrsinifolia

Foodplant / parasite
Uncinula adunca var. adunca parasitises Salix myrsinifolia

Salix myrsinifolia, known as the dark-leaved willow or myrsine-leaved willow, is a species of willow native to Europe and Western Siberia. It forms a 2–5 m (6.6–16.4 ft) high shrub. In the north it often becomes a tree up to 8 m (26 ft) tall.