Northern Prairie Wildlife Research Center
Virginia Dayflower (Commelina virginica)
- Family: Dayflower (Commelinaceae)
- Flowering: July-October.
- Field Marks: Virginia dayflower is the only perennial member of this genus with all 3 petals blue and with rhizomes.
- Habitat: Swamps, sloughs, wet woods.
- Habit: Perennial herbs with rhizomes.
- Stems: Erect or seldom lying on the ground, usually hairy, to 2 1/2 feet long.
- Leaves: Alternate, simple, lanceolate, pointed at the tip, tapering to the base, without teeth, tough to the touch on the upper surface, up to 5 inches long and up to 2 inches broad, with a conspicuous sheath.
- Flowers: Few in a boat-shaped spathe, the spathe about 1 inch long, with united edges, the flowers nearly symmetrical, about 1 inch across.
- Sepals: 3, but 2 of them partly united, green or bluish, unequal in size.
- Petals: 3, free from each other, all blue and nearly all the same size, about 1/2 inch long.
- Stamens: 6, 3 of them not fertile and bright yellow.
- Pistils: 1; style 1; ovary superior.
- Fruits: Capsule about 1/2 inch long, with 3 smooth or slightly roughened seeds about 1/4 inch long.
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