Campanula glomerata, common name clustered bellflower or Dane's blood, is a perennial herbaceous plant growing to a height of 2060 centimetres.
The stem is simple, erect and shortly pubescent, leaves usually oval-lanceolate and lightly heart-shaped. The inflorescence is formed by 15-20 single flowers of about 2 to 3 cm.
The corolla is campanulate and pubescent with five dark violet-blue or purplish-blue petals. Flowering period is from June to September.