Northern Prairie Wildlife Research Center
Western Wetland Flora
Field Office Guide to Plant Species
Delphinium glaucum S. Wats.
- Family: Butter-cup (Ranunculaceae)
- Flowering: July-September
- Field Marks: This perennial larkspur has violet-purple sepals that are up to 1/2 inch long. The smooth, glaucous stems are hollow and tend to be woody at the base. They may be 3-7 feet tall.
- Habitat: Wet meadows, along streams.
- Habit: Perennial herb with a stout, woody rootstock.
- Stems: Coarse, upright, hollow, branched, up to 7 feet tall, woody at the base, smooth, glaucous.
- Leaves: Alternate, up to 8 inches across, palmately divided into several segments, the segments lobed or toothed, smooth or hairy.
- Flowers: Many in racemes up to 1 1/2 feet long; flower stalks up to 2 inches long; upper bracts leafy.
- Sepals: 5, violet-purple, up to 1/2 inch long, minutely hairy, one of them prolonged
backward into a spur, the spur 1/3-1/2 inch long.
- Petals: 4, 2 of them larger than the other 2, narrow, oblong, notched and purple at the tip.
- Stamens: Numerous.
- Pistils: 1-5, each with a superior ovary.
- Fruits: Follicles 1-5, smooth or minutely hairy, upright, 1/2-3/4 inch long; seeds ovoid, straw-colored, up to 1/8 inch long.
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