Japanese name: オニシモツケ（鬼下野） Scientific name:Filipendula camtschatica
[Overview]
A perennial 1–2 m tall, found in wetlands and similar places.
The stem is ridged and erect, sometimes with bristles.
There are basal leaves and stem leaves.
The leaves on the stem are alternate and odd-pinnately compound, and the lateral leaflets are often small and inconspicuous.
The terminal leaflet is round, 15–25 cm across, palmately divided into 3–5 lobes, with doubly toothed or notched teeth.
Corymbs at the stem tips bear many white or pale pink, 4–5-petaled flowers 5–8 mm across.
The 15–20 long stamens are conspicuous.
The inflorescence stalk and flower stalks have short hairs.
The fruit is a flat achene.
