Division Basidiomycota > Class Agaricomycetes > Order Agaricales > Family Amanitaceae.
The Australian Yellow Dust Amanita grows in the soil.
Newly emerged spherical fruit bodies are covered by the universal veil.
They then develop a stalk and a cap with a rounded (convex) upper surface.
As they grow the veil breaks leaving patches as warts on the upper surface of the cap.
Caps, under 9 cm across do not have striations around the edge.
They are yellow tinged with green or orange.
The caps are thick and the flesh white.
Older mushrooms have a flat cap.
The white or pale yellow gills are close together.
They are just attached to the top of the stalk but do not run down it.
The stalk, up to 9 cm high is attached to the centre of the cap.
It is pale yellow with a swollen base.
Usually buried underground is the membranous cup-like volva.
This is the base of the universal veil torn as the stalk grew.
It also leaves a powdery deposit on the base of the stalk.
The stem also has remnants of the partial veil which protected the gills.
This membranous ring hangs down (or up in parts) around the stalk like a skirt.
The spore print is white.
J.F.
