Weed Herbarium – by Scientific Name
Panicum capillare | witchgrass | Poaceae (Graminae) - Grass Family |
Panicum dichotomiflorum | fall panicum | Poaceae (Graminae) - Grass Family |
Panicum virgatum | switchgrass | Poaceae (Graminae) - Grass Family |
Parthenocissus quinquefolia | Virginia creeper | Vitaceae - Grape Family |
Paspalum dilatatum | dallis grass | Poaceae (Graminae) - Grass Family |
Paspalum setaceum | paspalum | Poaceae (Graminae) - Grass Family |
Pastinaca sativa | wild parsnip | Apiaceae (Umbelliferae) - Carrot Family |
Persicaria arifolia | see - Polygonum arifolium | |
Persicaria maculosa | see - Polygonum persicaria | |
Persicaria pensylvanica | see - Polygonum pensylvanicum | |
Persicaria sagittata | see - Polygonum sagittatum | |
Persicaria virginica | see - Tovara virginiana |
Petasites hybridus | butterburdock | Asteraceae (Compositae) - Aster or Sunflower Family |
Phalaris arundinacea | reed canary grass | Poaceae (Graminae) - Grass Family |
Phleum pratense | timothy | Poaceae (Graminae) - Grass Family |
Phragmites communis | see - Phragmites australis | |
Phragmites australis | common reed | Poaceae (Graminae) - Grass Family |
Phytolacca americana | common pokeweed | Phytolaccaceae - Pokeweed Family |
Pilea pumila | clearweed | Urticaceae - Nettle Family |
Plantago lanceolata | narrowleaf plantain | Plantaginaceae - Plantain Family |
Plantago major | broadleaf plantain | Plantaginaceae - Plantain Family |
Poa annua | annual bluegrass | Poaceae (Graminae) - Grass Family |
Poa bulbosa | bulbous bluegrass | Poaceae (Graminae) - Grass Family |
Polygonum virginianum | see - Tovara virginiana | |
Polygonum arifolium | Halberd-leaved tearthumb | Polygonaceae - Smartweed or Buckwheat Family |
Polygonum aviculare | prostrate knotweed | Polygonaceae - Smartweed or Buckwheat Family |
Polygonum cilinode | black fringed knotweed | Polygonaceae - Smartweed or Buckwheat Family |
Polygonum convolvulus | wild buckwheat | Polygonaceae - Smartweed or Buckwheat Family |
Polygonum cuspidatum | Japanese knotweed | Polygonaceae - Smartweed or Buckwheat Family |
Polygonum pensylvanicum | Pennsylvania smartweed | Polygonaceae - Smartweed or Buckwheat Family |
Polygonum persicaria | lady's thumb smartweed | Polygonaceae - Smartweed or Buckwheat Family |
Polygonum sachalinense | giant knotweed | Polygonaceae - Smartweed or Buckwheat Family |
Polygonum sagittatum | arrowleaf tear-thumb | Polygonaceae - Smartweed or Buckwheat Family |
Polygonum scandens | hedge smartweed | Polygonaceae - Smartweed or Buckwheat Family |
Portulaca oleracea | common purslane | Portulacaceae - Purslane Family |
Potentilla argentea | silvery cinquefoil | Rosaceae - Rose Family |
Potentilla norvegica | rough cinquefoil | Rosaceae - Rose Family |
Potentilla recta | sulfur cinquefoil | Rosaceae - Rose Family |
Potentilla simplex | old field cinquefoil | Rosaceae - Rose Family |
Prunella vulgaris | heal-all | Lamiaceae (Labiatae) - Mint Family |
Pteridium aquilinum | bracken fern | Polypodiaceae - Fern Family |
Pueraria lobata | see - Pueraria montana | |
Pueraria montana | kudzu | Fabaceae (Leguminosae) - Pea or Bean Family |