Rhizomatous perennial to 2 m or so tall. Leaves bipinnate with 3 leaflets, each further divided, the margins double-toothed. Flowers in slightly unpleasant-smelling plumes to 0.5 m long, the individual flowers about 5 mm wide; summer. Carpels mostly 3. Syn. a. sylvester Kostel.
Occasionally naturalised in the NSW S Tablelands. A. aethusifolius (Lév.) Nakai from Korea is sometimes listed.
Eurasia, N America.
Source: (2002). Rosaceae. In: . Horticultural Flora of South-eastern Australia. Volume 3. Flowering plants. Dicotyledons. Part 2. The identification of garden and cultivated plants. University of New South Wales Press.
A listed cultivar, description unlocated.
A dwarf with the foliage finely dissected into thread-like ferny segments; flowers cream.
To 1.2 m tall, with feathery leaves and white flowers. Originated by Foerster in 1960. ['Child of Two Worlds']