(phytopathology) Dieback of ash trees caused by the fungus Hymenoscyphus fraxineus.

plural of mountain ash

A pigment which is the residuum of lapis lazuli after the ultramarine has been extracted, and which was formerly used as a middle or neutral tint for flesh, skies, and draperies.

plural of ultramarine ash

Flindersia australis, a rainforest tree from New South Wales and Queensland in Australia.

plural of bone ash

Fraxinus pennsylvanica, a species of ash tree native to eastern and central North America. / Forest natal-mahogany (Trichilia dregeana)

Fraxinus pennsylvanica, a species of ash tree native to eastern and central North America.

The tree Comocladia dodonaea, whose exudate can cause contact dermatitis.

A metal pan or tray to catch and retain ashes.