Perennial to about 1m tall. Leaflets narrow. Flower clusters erect. Flowers small, white; summer.
It is likely that at least a few of the following cultivars are of hybrid origin.
Japan.
Source: (2002). Saxifragaceae. 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.
About 50 cm tall with dark pink flowers. Raised g. Arends, 1929.
Dwarf to about 40 cm tall. Flowers white. Raised p. Theoboldt, 1939.
60-70 cm tall with dark red flowers. Raised Kooy, 1929.
Astilbe japonica 'Red Sentinel'
Flowers deep red, in open clusters. Early flowering. Raised h. den Ouden, 1947.
About 60 cm tall, with dense, upright pink flower clusters. Raised g. Arends, 1920.