|Dipsacus japonicus is
a biennial herb found in sunny, damp portions in grasslands, the
stems growing over one meter in height and branching well, with
stiff, spiny structures all over. Leaves are of alternate
phyllotaxis, each pinnately cleft deeply into segments to the bases.
The pieces are sharp-pointed at their tips, and the margins
serrated. Many light red-purple florets gather to form a ball-like
flower head. About 2cm across, the flower head has 5-20mm-long
involucral bracts, which, standing in a row, curve backward. The
corolla is cylindrical and cleft in 4 segments at the top. Stamens,
4 in number, are above the corolla. Bloom time: August-September.