Buckwheat

Oxyria digyna

Oxyria digyna

mountain sorrel
Polygonum bistortoides

Polygonum bistortoides

western bistort
Rumex acetosella

Rumex acetosella

sheep sorrel
Polygonum lapathifolium

Polygonum lapathifolium

willow smartweed
Polygonum persicaria

Polygonum persicaria

lady's-thumb knotweed
Polygonum aviculare

Polygonum aviculare

common knotweed
Polygonum douglasii

Polygonum douglasii

Douglas's knotweed
Eriogonum nudum

Eriogonum nudum

naked eriogonum
Eriogonum caespitosum

Eriogonum caespitosum

cushion eriogonum
Eriogonum strictum

Eriogonum strictum

strict desert buckwheat
Rumex crispus

Rumex crispus

curly dock
Polygonum paronychia

Polygonum paronychia

beach knotweed
Polygonum amphibium

Polygonum amphibium

water smartweed
Polygonum cuspidatum

Polygonum cuspidatum

Japanese knotweed
Polygonum minimum

Polygonum minimum

broadleaf knotweed