The roots are vertical, about 8-10 cm long and 2.5 mm in diameter, conical in shape, with sparse lateral roots.
It is a perennial herb, growing to about 15-40 cm tall, sometimes taller.
The inflorescence is terminal, elongated, up to half or one-third the length of the stem, with small bract-like bracts.
It flowers from May to August and fruits from July to September.