An annual herb with stems that are typically decumbent, meaning that they are prostrate at the base but become erect towards the tips, but some individuals may be simply erect.

Also known as “Dixie Ticktrefoil”. The leaves, stems and seeds are covered in tiny hairs that catch on hair, clothing and fur.

Commonly known as Ground-ivy, gill-over-the-ground or Creeping Charlie. It has numerous medicinal uses, and is commonly used as a tasty salad green in many countries.

A genus of the sunflower (Helianthus) family Asteraceae (previously called Compositae) and are closely related to dandelion.

A herbaceous biennial or annual plant, growing to 10-30 cm tall, with distinctive yellow flowerheads that superficially resemble Hop flowers.

An annual herb with low, spreading stems up to 15 centimeters long growing from a taproot. The leaves are needle-like or linear in shape with sharp, stiff points.

This annual herb grows prostrate, spreading, or erect stems. It grows up to 40 centimeters tall. The leaves are made up of three oval leaflets. Flowers occur in the leaf axils.

A freely branched winter annual about 1 to 3 inches tall. It closely resembles lawn burrweed and knawel.

An herbaceous, short-lived perennial plant, variable in size, growing to 20–80 cm tall.

A genus of plants belonging to the family Euphorbiaceae, consisting of 2008 species.