Northern Prairie Wildlife Research Center
Western Wetland Flora
Field Office Guide to Plant Species
Mimulus primuloides Benth.
- Family: Figwort (Scrophulariaceae)
- Flowering: June-August
- Field Marks: This dwarf, yellow-flowered species has its small flowers borne on leafless stems.
- Habitat: Wet meadows, along streams.
- Habit: Perennial herb with short rhizomes and slender stolons.
- Stems: Upright, bearing only a solitary flower on a stalk up to 3 inches long, usually smooth.
- Leaves: All clustered at the base of the plant, oblanceolate, up to 1 1/2 inches long, up to 1/2 inch wide, pointed at the tip, tapering to the base, shallowly toothed, hairy.
- Flowers: Solitary at the tip of a slender stalk.
- Sepals: 5, green, united below to form a tube 1/4-1/3 inch long and with reddish ribs, smooth, the lobes 1/12 inch long.
- Petals: 5, yellow with reddish dots, united below to form a tube 1/3-1/2 inch long, the lobes notched.
- Stamens: 4.
- Pistils: Ovary superior.
- Fruits: Capsules ovoid, pointed at the tip, 1/4-1/3 inch long, smooth.
- Notes: The petals fall away shortly after the flowers open.
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