Northern Prairie Wildlife Research Center
Southern Wetland Flora
Field Office Guide to Plant Species
Mecardonia acuminata (Walter) Small
- Family: Figwort (Scrophulariaceae)
- Flowering: July-September
- Field Marks: The characteristics which distinguish this species from all others are opposite
leaves, axillary flowers, 5 sepals, and 4 stamens.
- Habitat: Bottomlands, moist ditches, stream banks, low pinelands, savannas, flatwoods, bogs,
floodplain forests, marshes.
- Habit: Perrenial herb with fibrous roots.
- Stems: Upright or sometimes prostrate, smooth, branched, angled, up to 20 inches tall.
- Leaves: Opposite, simple, elliptic to oblanceolate, pointed at the tip, tapering to the base,
toothed, smooth, up to 2 inches long, up to 1/2 inch wide.
- Flowers: Solitary in the axils of the leaves, on smooth, slender stalks up to 1 1/2 inches long.
- Sepals: 5, green, 2 different sizes, free or nearly free from each other, the longest up to nearly
1/2 inch long.
- Petals: 5, white with purple veins, united, up to 1/2 inch long.
- Stamens: 4.
- Pistils: Ovary superior.
- Fruits: Capsules ellipsoid, 1/4-1/3 inch long; seeds numerous, veiny.
- Notes: When this plant dies back in the fall, it turns black and persists over the winter months.
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