a perennial herb, 40-80cm in height, occurs in damp places in
mountainous and subalpine regions, with spines on stems and leaves
that hurt. Leaves are of alternate phyllotaxis, with long petioles,
blades being broad oval, 6-15cm long, tips elongating themselves in
a tail way, and coarse serrations on margins. Dioecious: Female
flowers put themselves on long upper parts' spikes, with petaloid
sepals and one style. Male flowers, white, many, attach axils below
the female ones in a conical way. Bloom time: July-September.