Robert W. Freckmann Herbarium


  Parietaria pensylvanica Muhl. ex Willd. image
Photographer: Kitty Kohout           

Christopher Noll

Christopher Noll
Family Urticaceae
Parietaria pensylvanica Muhl. ex Willd.
Pennsylvanian pellitory
Parietaria: derives from Latin parietarius, "of walls," which descends from Greek paries, "a wall," where the plant likes to grow, as Pliny knew when he described it
pensylvanica: of Pennsylvania
County distribution map- click for detailed distribution maps.
Detailed Distribution:
Town Range Maps
Google Dot Maps
Status: Native
Plant: small, erect, annual, 4"-16" tall forb with non-stinging, fine hairs
Flower: green, 4-parted, 1/8" wide; inflorescence few-flowered, short clusters from the middle and upper leaf axils; blooms May-Sept.
Fruit:shiny, oval, dry seed
Leaf:stalked, thin, lance-like, alternate, toothless, no stipules
Habitat: dry to moist; woods, disturbed sites, sidewalk cracks, streambanks
(Glossary)

More Information Natural Communities Herbarium Specimens
All Parietaria list Google- Images or Text

Flora of North America (off site)
Synonyms 
Parietaria obtusa Rydb. ex Small
Parietaria occidentalis Rydb.
Parietaria pensylvanica Muhl. ex Willd. var. obtusa (Rydb. ex Small) Shinners
Parietaria pensylvanica Muhl. ex Willd. var. pensylvanica

         
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