Appearance

Solanum sisymbriifolium is can be annual or perennial depending on location. It is an upright herbaceous plant growing up to about 3 ft. tall. The stem and branches are sticky and hairy, with flat, orange-yellow spines up to 0.6 in. long. Solanum sisymbriifolium is in the nightshade family and is native to South America. It can now be found in Africa, Asia, Australia, Europe and North America.

Foliage

The alternate, petiolate, ovate to lanceolate leaves are pubescent both above and below. The leaves are deeply lobed and may have serrate margins.

Flowers

The inflorescence arises from the leaf axil. The raceme can carry from one to ten flowers. Flowers have five petals and range from white to blue to purple in color.

Fruit

The red succulent fruits are globular berries. The seed are pale yellow and flatened.

Ecological Threat

Solanum sisymbriifolium can be found along roadsides, waste places, landfills, and plowed fields. It is able to succeed in a wide range of conditions but it does require moisture and thrives in peat and sandy soils. It prefers full sunlight but is tolerant of low-light situations.

Selected Images

Maps

Invasive Listing Sources

• Idaho Invasive Species Act

References