Scientific NameDiodia teres
Other Common Names:
common button weed
Synonyms (former Scientific Names):
Prostrate, spreading, or slightly upright.
Linear or elliptic, 3/4-1 1/2 inches long (2-4 cm), 0.08-0.24 inches wide (2-6 mm), opposite, without petioles, with a prominent midvein on both surfaces. Leaves are connected across the stem by a membrane that has several long (3-5 mm) hairs connected to it.
Erect or spreading annual with opposite, linear leaves and small white to pink or light purple flowers. Prostrate or slightly upright growth habit, small, white, 4-parted flowers, and membrane connecting each pair of opposite leaves helps to distinguish this plant from most other weeds. However, Virginia Buttonweed (Diodia virginiana) is very similar in growth habit and appearance but is a perennial with much wider leaves and stems that root at the nodes.
Flower Seed Head
Arise from a region between the stem and leaf (axillary), usually solitary, star-shaped, and consist of 4 small white sepals.
Small rounded fruit that is pubescent with 4 sepals protruding from the top surface.
Found throughout the southeastern United States.
upright and nonwoody,
prostrate and nonwoody
Thorns or Spines
Approximate Flower Diameter
Dominant Flower Color
Stem Cross Section
round or oval