Samiksha Jaiswal (Editor)

Polygonum bidwelliae

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Kingdom
  
Plantae

Family
  
Polygonaceae

Scientific name
  
Polygonum bidwelliae

Order
  
Caryophyllales

Genus
  
Polygonum

Rank
  
Species

Similar
  
Polygonum shastense, Polygonum polygaloides, Polygonum paronychia, Polygonum achoreum, Polygonum minimum

Polygonum bidwelliae is an uncommon species of flowering plant in the knotweed family known by the common name Bidwell's knotweed. The plant was named for American suffragist Annie Bidwell, who at one time lived in the Bidwell Mansion in Chico, California. She is the person who collected the type specimen in Northern California.

Contents

Distribution

Polygonum bidwelliae is endemic to California, where it is known from the northern Sacramento Valley and adjacent slopes of the southernmost Cascade Range in Butte, Shasta, and Tehama Counties. It grows in chaparral, woodland, and grassland habitat on volcanic soils.

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.

References

Polygonum bidwelliae Wikipedia