Any coarse weedy herb.
An umbelliferous plant, of genus Heracleum, most species of which are phototoxic.
Certain plants from the genera Ambrosia, Erigeron, or Heracleum.
the widely-grown edible plant common purslane or summer purslane (Portulaca oleracea)
pink purslane (Claytonia sibirica)
Halimione portulacoides
moss-rose purslane, moss rose (Portulaca grandiflora)
shoreline purslane (Sesuvium portulacastrum)
Honckenya peploides
purslane tree (Portulacaria afra)
winter purslane, miner's lettuce (Claytonia perfoliata)
Any of the family Portulacaceae (order Caryophyllales) of succulent plants.