Argentipallium is a small genus of perennial herbs in the daisy family Asteraceae, order Asterales. The genus is endemic to Australia and comprises six accepted species. It was first formally described in 1992 by Australian botanist Paul G. Wilson, with the account published in the journal Nuytsia (8(3):447–460).
Plants in this genus are perennial herbs with alternate, sessile leaves that are flat, have entire margins, and are tomentose (woolly) on both surfaces. The flower heads (capitula) are disciform or discoid, borne singly or arranged in terminal panicles. The involucral bracts are papery and coloured — a feature characteristic of the broader everlasting-daisy group within Asteraceae. Outer florets are yellow, female, and filiform in form; central florets are bisexual (perfect) and also yellow. Fruits are obovoid achenes bearing short, clavate twin hairs, with a pappus of free barbellate bristles that are shortly connate at the base in a ring.
The genus is distributed across Australia, with representation in Western Australia (notably Argentipallium niveum and Argentipallium tephrodes) and one species, Argentipallium obtusifolium, reaching the far south coast of New South Wales.
Etymology
The genus name Argentipallium is derived from Latin: argenti- (silver) and pallium (cloak or mantle), reflecting the silvery-woolly (tomentose) indumentum that covers the leaves of plants in this group. The name was coined by Paul G. Wilson when he formally described the genus in 1992.
Distribution
Argentipallium is endemic to Australia, with six known species distributed across southern and western parts of the continent. Western Australia hosts at least two species (Argentipallium niveum and Argentipallium tephrodes), while Argentipallium obtusifolium extends to the far south coast of New South Wales.
