Japanese name: ヒメキンミズヒキ(姫金水引) Scientific name:Agrimonia nipponica
[Overview]
A perennial growing in mountain forests and along valleys.
Some plants reach about 80 cm in height.
It has a thickened rhizome.
The plant is mostly hairless, with slender, sparsely branched stems.
Leaves are alternate and odd-pinnately compound, with 3–5 leaflets.
The leaflets are elliptic to obovate with tips that are not very pointed, and the margins have rounded serrations.
The underside of the leaf has indistinct white glandular dots.
Racemes at the stem tips bear sparse flowers.
The flowers are yellow, 5-petaled, and 5–7 mm across.
The petals are oblong, 3–4 mm long and 1–1.2 mm wide.
The stamens are few, 5–8.
The calyx tube is obconical, and the lobes are recurved, with appressed hairs on the veins.
The calyx tube in fruit is small, 2 mm long and 2–3 mm across.
The calyx tube has a few hooked spines 2 mm long, which curve inward.
The fruit is an achene.
[Notes]
Kin-mizuhiki can be distinguished by its greater number of leaflets (5–9), pointed leaflet tips, larger flowers 6–11 mm across, broader petals, and more numerous stamens (8–15).