Field bindweed, possession vine
All the western states (non-native); classed as noxious
Between 1 and 3 feet
Roadsides, grassland, fields, streambanks, waste ground; up to 8,000 feet
Ovate or arrow-shaped (hastate); projecting backwards a little below the (short) stalk. 1.5 inches long, with rounded tips
Flowers of convolvulus arvensis are usually pink around the edges, with a star-shaped white area at the center, but the pink color may be very faint, resulting in a nearly pure white flower. The corolla has five lobes, forming a neat pentagonal shape when fully open. In the middle are five purple-tipped stamens and a split white ovary, slightly longer.
The plant is a creeper, growing mostly along the ground, or climbing when support is available. It has distinctive, arrow-shaped leaves, at regular, alternate intervals. Native to Europe, field bindweed has been established in the US for several centuries and is classed as a noxious weed; plants have deep roots which make them difficult to eradicate.