Myrrhis odorata; The sweet cicely is foremost a weed within the Icelandic flora. It grows mainly in urban areas and around farm houses. Walking through Reykjavik you can see this plant in private gardens and along hedges. The plant is commonly used as a component of herbal teas and similar products. It has a strong anise flavour, especially the dark long-shaped seeds. A hint for anyone who wants to propagate this plant from seed: the seed only germinates after a a cold period. So you can either sow it before winter or store the seed in a fridge for some time.
It is a member of the carrot family (Umbelliferae)