It was introduced from Europe about 100 years ago and now occurs in all provinces north to the Peace River region. The roots are dense and fibrous. The leaves are alternate and divided three ways into fine pointed segments. The receptacle is solid, the disc becomes slightly domed at maturity and the bracts are not chaffy. Seed germination is enhanced by light and storage.
Chromosome numbers vary regionally.
The difference may also reflect the greater winter hardiness of tetraploid rosettes than diploid rosettes. Chrysanthemum leucanthemum has coarsely lobed leaves and Chamomilla recutita has an aromatic odour and a hollow conical receptacle. Matricaria maritima spp. It is thought to be native to the subarctic in both the new and old worlds. Matricaria maritima spp.