Parietaria officinalis

"Pellitory-of-the-wall" redirects here. For the common urban weed also called spreading pellitory, see Parietaria judaica.

Parietaria officinalis, the eastern pellitory-of-the-wall,^[1] also known as upright pellitory^[2] and lichwort, is a plant of the nettle family. Its leaves, however, are non-stinging. The plant grows on rubbish and on walls, hence the name.

Parietaria officinalis
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Rosids
Order:	Rosales
Family:	Urticaceae
Genus:	Parietaria
Species:	P. officinalis
Binomial name
Parietaria officinalis L.

The pollen is a cause of allergy.^[3]

Uses

It was once used in the making of certain metheglins.^{[citation needed]}

Chemistry

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.^[4] They also contain caffeoylmalic and two pyrrole acids.^[5]

See also

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