Dioctis pensylvanica (L.) Raf.
Persicaria maculata (Raf.) Á.Löve & D.Löve
Persicaria mississippiensis (Stanford) Small
Persicaria omissa (Greene) Greene
Polygonum longistylum omissum (Greene) Stanford
Polygonum maculatum Raf.
Polygonum mississippiense Stanford
Polygonum omissum Greene
Polygonum pensylvanicum L.
Common Name: Pennsylvania Smartweed
Persicaria pensylvanica is an erect or sprawling, annual plant with a stem that can be branched or unbranched; it can grow from 10 - 200cm tall[
The plant is harvested from the wild for local use as a medicine.
Central and southern N. America - Montana to Quebec and Nova Scotia, south to central Mexico, Texas and Florida; Caribbean - Cuba, Hispaniola
Waste ground in moist soils[
]. Moist, disturbed places, ditches, riverbanks, cultivated fields, shorelines of ponds and reservoirs; at elevations from sea level to 1,800 metres[
Species in this genus generally succeed in an ordinary garden soil, whilst preferring a moisture retentive not too fertile soil in sun or part shade[
]. They generally rpays generous treatment[
Most plants in this genus seem to be immune to the predations of rabbits[
We have no specific information for this species, but the seed of most, if not all, members of the genus is edible both raw and cooked, and is potentially a good source of amino acids. Unfortunately the seed is also usually rather small and fiddly to utilize[
An infusion of the plant tops has been used in the treatment of epilepsy[
]. The infusion has been used to treat diarrhoea[
The dried leaves have a bitter flavour. An infusion has been used to treat haemorrhages of blood from the mouth[
]. Combined with other herbs, it is drunk after chilbirth as an aid to postpartum healing[
The leaves have been used as a wipe or poultice on the anus in treating bloody piles[
Seed - sow spring in situ.