"Annual" images

Ipomea lacunosa

Photo credit

Grant Thompson

Ipomea lacunosa

Photo credit

Grant Thompson

Ipomea lacunosa

Photo credit

Grant Thompson

Ipomea lacunosa

Photo credit

Grant Thompson

Ipomea lacunosa

Photo credit

Grant Thompson

Ipomea lacunosa

Photo credit

Grant Thompson

Pitted morningglory

Conyza canadensis

Conyza canadensis

Photo credit

Mary Ellen Harte, Bugwood.org

Conyza canadensis

Conyza canadensis

Photo credit

Robert Vidski, Bugwood.org

Conyza canadensis

Conyza canadensis

Photo credit

Rebekah D. Wallace, University of Georgia

Conyza canadensis - whole plant, flowers

Conyza canadensis - whole plant, flowers

Horseweed

Polygonum convolvulus

Photo credit

Grant Thompson

Polygonum convolvulus

Photo credit

Grant Thompson

Polygonum convolvulus

Photo credit

Grant Thompson

Polygonum convolvulus

Photo credit

Grant Thompson

Polygonum convolvulus - seed

Polygonum convolvulus - seed

Photo credit

Olivia McCandless

Wild buckwheat

Polygonum aviculare - invading sidewalk edge

Polygonum aviculare - invading sidewalk edge

Polygonum aviculare - leaf, stem

Polygonum aviculare - leaf, stem

Polygonum aviculare - whole plant

Polygonum aviculare - whole plant

Prostrate knotweed

Oxalis stricta - flower, leaves

Oxalis stricta - flower, leaves

Oxalis stricta - whole plant

Oxalis stricta - whole plant

Oxalis stricta - whole plant

Oxalis stricta - whole plant

Yellow woodsorrel

Oxalis corniculata

Oxalis corniculata

Photo credit

Joseph M. DiTomaso, University of California - Davis

Oxalis corniculata

Oxalis corniculata

Photo credit

Joseph M. DiTomaso, University of California - Davis

Oxalis corniculata

Oxalis corniculata

Photo credit

Joseph M. DiTomaso, University of California - Davis

Creeping woodsorrel

Sida spinosa

Photo credit

Grant Thompson

Sida spinosa

Note pair of linear stipules at node, "spines"

Photo credit

Grant Thompson

Sida spinosa

Photo credit

Grant Thompson

Prickly sida

Anoda cristata

Photo credit

Rebekah D. Wallace, University of Georgia

Anoda cristata

Photo credit

Rebekah D. Wallace, University of Georgia

Anoda cristata

Photo credit

Rebekah D. Wallace, University of Georgia

Anoda cristata - seed

Anoda cristata - seed

Photo credit

Olivia McCandless

Spurred anoda

Barbarea vulgaris

Photo credit

Grant Thompson

Barbarea vulgaris

Photo credit

Grant Thompson

Barbarea vulgaris

Photo credit

Grant Thompson

Barbarea vulgaris - seed

Barbarea vulgaris - seed

Photo credit

Olivia McCandless

Yellow rocket

Xanthium strumarium

Photo credit

Grant Thompson

Xanthium strumarium

Photo credit

Grant Thompson

Xanthium strumarium

Photo credit

Grant Thompson

Xanthium strumarium

Photo credit

Grant Thompson

Common cocklebur

Sonchus oleraceus - flower buds

Sonchus oleraceus - flower buds

Sonchus oleraceus - leaf

Sonchus oleraceus - leaf

Sonchus oleraceus - whole plant

Sonchus oleraceus - whole plant

Annual sowthistle

Senecio vulgaris

Senecio vulgaris

Photo credit

John D. Byrd, Mississippi State University

Senecio vulgaris

Senecio vulgaris

Photo credit

Steve Dewey, Utah State University

Senecio vulgaris

Senecio vulgaris

Photo credit

Ohio State Weed Lab Archive

Common groundsel

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