Bidwell'S Knotweed

Description

Polygonum bidwelliae-is an annual herb producing an erect green, wiry, angled stem reaching 20 centimeters (8 inches) in height. The narrow, pointed leaves are oppositely arranged along the stem, mainly on the upper parts of stem branches. The leaves have relatively large-stipules-which form-ochrea-that sheath the stem, sometimes hiding the leaf bases. The sharp-pointed-stipules-are membranous and silvery white. Bright pink flowers occur in upper leaf axils.