Weed Research and Information Center

Weeds in natural areas

Common Names
 
A-B •• C •• D-G •• H-M •• N-R •• S-T •• U-Z
Scientific Names
 
A-B •• C-D •• E-H •• I-O •• P-R •• S-Z


SCIENTIFIC NAME Common name Family
Paspalum dilatatum Dallisgrass Poaceae
Peganum harmala Harmal or African rue Zygophyllaceae
Pennisetum ciliare Buffelgrass Poaceae
Pennisetum clandestinum Kikuyugrass Poaceae
Pennisetum setaceum Crimson fountaingrass Poaceae
Phalaris aquatica Hardinggrass Poaceae
Phalaris arundinacea Reed canarygrass Poaceae
Phoenix canariensis Canary Island date palm Arecaceae
Phragmites australis Common reed Poaceae
Phytolacca americana Common pokeweed Phytolaccaceae
Picris echioides Bristly oxtongue Asteraceae
Piptatherum miliaceum Smilograss Poaceae
Pittosporum undulatum Victorian box Pittosporaceae
Plantago lanceolata Buckhorn plantain Plantaginaceae
Poa bulbosa Bulbous bluegrass Poaceae
Poa pratensis Kentucky bluegrass Poaceae
Polygonum arenastrum Prostrate knotweed Polygonaceae
Polygonum convolvulus Wild buckwheat Polygonaceae
Polygonum cuspidatum Japanese knotweed Polygonaceae
Polygonum lapathifolium Pale smartweed Polygonaceae
Polygonum persicaria Ladysthumb Polygonaceae
Polygonum polystachyum Himalayan knotweed Polygonaceae
Polygonum sachalinense Sakhalin or giant knotweed Polygonaceae
Polygonum x bohemicum Bohemian knotweed Polygonaceae
Polypogon monspeliensis Rabbitfoot polypogon Poaceae
Potamogeton crispus Curlyleaf pondweed Potamogetonaceae
Potamogeton foliosus Leafy pondweed Potamogetonaceae
Potamogeton illinoensis Illinois pondweed Potamogetonaceae
Potamogeton natans Floatingleaf pondweed Potamogetonaceae
Potamogeton nodosus American pondweed Potamogetonaceae
Potentilla recta Sulfur cinquefoil Rosaceae
Prunus cerasifera Cherry plum Rosaceae
Pyracanthaspp. Pyracantha or firethorn Rosaceae
Ranunculus acris Tall buttercup Ranunculaceae
Ranunculus repens Creeping buttercup Ranunculaceae
Ranunculus testiculatus Bur buttercup Ranunculaceae
Raphanus raphanistrum Wild radish Brassicaceae
Raphanus sativus Radish Brassicaceae
Ricinus communis Castorbean Euphorbiaceae
Robinia pseudoacacia Black locust Fabaceae
Rosa canina Dog rose Rosaceae
Rosa eglanteria Sweetbriar rose Rosaceae
Rosa multiflora Multiflora rose Rosaceae
Rubus armeniacus Himalaya blackberry Rosaceae
Rumex acetosella Red or sheep sorrel Polygonaceae
Rumex crispus Curly dock Polygonaceae
Rumex obtusifolius Broadleaf dock Polygonaceae
Ruppia maritima Widgeongrass Potamogetonaceae or Ruppiaceae