Buttonweed

Diodia teres

Family: Rubiaceae

Plant Description: Annual with spreading or prostrate stems to 1 m long. Leaves roughish, 2-7 cm long, elliptical or lanceolate, stipular hairs present, opposite. Flowers axillary, the corolla 4-6 mm wide, white or pinkish-lavender, petals highly pubescent.

Plant Trivia:

Field Identification:

Occurrence: Frequent on deeper sands in prairies, open areas, and disturbed sites.

Bloom Period:

Plant Use:

Key to the Genus Diodia:

  1. Calyx teeth 4……………………………………………………………..D. teres

            Calyx teeth 2…………………………………………………..D. virginiana