Northern Prairie Wildlife Research Center
Western Wetland Flora
Field Office Guide to Plant Species
Lomatogonium rotatum (L.) Fr. ex Fernald
- Family: Gentian (Gentianaceae)
- Flowering: August-September
- Field Marks: This species has 5 united blue petals that form a rotate flower, rather than a tubular one. The stigmas are attached to the sides of the ovary.
- Habitat: Wet meadows, bogs, often in salty habitats.
- Habit: Annual herb with fibrous roots.
- Stems: Upright, usually unbranched, up to 10 inches tall, smooth.
- Leaves: Opposite, simple, those on the lower part of the stem oblong to oblanceolate,
those on the upper part of the stem linear, up to 1 1/2 inches long, smooth, without teeth.
- Flowers: Borne singly in the axils of the upper leaves, on slender, smooth stalks.
- Sepals: 4-5, green, united only at the base, smooth, 1/3-1/2 inch long.
- Petals: 4-5, blue or rarely white, united near the base but not forming a tube, pointed at the tip, 1/4-3/4 inch long.
- Stamens: 4-5, attached to the base of the petals.
- Pistils: Ovary superior, smooth; stigmas attached to the sides of the ovary.
- Fruits: Capsules ellipsoid to oblongoid, smooth; seeds numerous.
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