Northern Prairie Wildlife Research Center
Western Wetland Flora
Field Office Guide to Plant Species
Epilobium glaberrimum Barbey
- Family: Evening-primrose (Onagraceae)
- Flowering: July-August
- Field Marks: This species is recognized by its glaucous stems and leaves and by its scaly rootstocks.
- Habitat: Along streams, moist woods.
- Habit: Perennial herb with scaly rootstocks.
- Stems: Upright, unbranched, slender, up to 2 feet tall, smooth or rarely with glandular hairs, glaucous, often purplish.
- Leaves: Opposite, simple, ascending, oblong to lanceolate, up to 2 inches long, more or less rounded at the tip. tapering to the sessile base, smooth, glaucous, with or without minute teeth: flower stalks very short.
- Flowers: Several in a terminal cluster, usually upright, sometimes drooping.
- Sepals: 4, green, free from each other, about 1/12 inch long.
- Petals: 4, purple to white, free from each other, usually slightly notched at the tip, 1/6-1/3 inch long.
- Stamens: 8.
- Pistils: Ovary inferior.
- Fruits: Capsules ellipsoid, slender, 2-3 inches long, seeds about 1/24 inch long, covered with minute warts, bearing a tuft of whitish hairs.
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