Japanese name: コシジシモツケソウ(越路下野草) Scientific name:Filipendula auriculata
[Overview]
A perennial 100–150 cm tall, found in mountain areas.
The stem is ridged and erect.
There are basal leaves and leaves alternate on the stem; the basal leaves have long petioles.
The leaves are odd-pinnately compound; the terminal leaflet is ovate, 7–22 cm long and 7–25 cm wide, palmately divided into 5–7 lobes, with toothed or notched margins.
There are usually 1–2 pairs of lateral leaflets, ovate to lanceolate, 0.5–4 cm long and 0.5–3 cm wide, with toothed or notched margins.
Sometimes there are no lateral leaflets.
There are large stipules clasping the stem.
Corymbs at the stem tips bear many pale pink, 4–5-petaled flowers 4–6 mm across.
The 20–30 long stamens are conspicuous.
The fruit is a flat achene.