Plants

Polyspora marginata

Polyspora microphylla

Polyspora multinervis

Polyspora nivea

Polyspora oblongifolia

Polyspora obtusa

Popowia helferi

Popowia hirta

Popowia humbertii

Popowia lanceolata

Popowia maritima

Polyosma verticillata

Polygonum brittingeri

Polygonum carneum

Polygonum cashmirense

Polygonum cashmiriense

Caspian Knotweed

Polygonum caspicum

Polygonum cedrorum

Priva meyerae

Polygonum chiloensis

Polygonum coarctatum

Indian Knotgrass

Polygonum cognatum

Polygonum confertiflorum

Polygonum corrigioloides

Polygonum czukavinae

Polygonum deciduum

Polygonum dissitiflorum

Polygonum donii

Douglas' Knotweed

Polygonum douglasii

Polygonum effusum

Polygonum ekimianum

Engelmann's knotweed

Polygonum engelmannii

Horse-tail knotweed

Polygonum equisetiforme

Devil's Shoestring

Polygonum erectum

Polygonum evenkiense

Polygonum excelsius