Parietaria officinalis, the eastern pellitory-of-the-wall,[1] also known as upright pellitory[2] and lichwort, is a plant of the nettle family.

The plant grows on rubbish and on walls, hence the name.

[citation needed] The leaves and flowers of P. officinalis contains the flavonoids kaempferol-3-bioside, the 3-glucosides and 3-rutinosides of quercetin, kaempferol and isorhamnetin, 3-sophorosides of quercetin and kaempferol and 3-neohesperosides of kaempferol and isorhamnetin.

[5] It is in a different family from Anacyclus pyrethrum, also called pellitory.

This Urticaceae article is a stub.