Northern Prairie Wildlife Research Center
Western Wetland Flora
Field Office Guide to Plant Species
Sagittaria cuneata Sheldon
- Family: Water Plantain (Alismataceae)
- Flowering: June-September
- Field Marks: This arrow-head strongly resembles others, but can be distinguished by its angular leaf stalks and straight beak on the achene.
- Habitat: Around and in lakes and ponds, along streams.
- Habit: Emersed or submersed perennial herb with rhizomes.
- Stems: Only the flowering stem above ground, up to 3 feet tall, smooth.
- Leaves: Basal, arrow-head shaped (sagittate), up to 8 inches long, the basal lobes usually shorter than the terminal lobe, smooth; leaf stalk angular.
- Flowers: Male and female flowers usually borne on the same plant in whorls, the male
flowers being uppermost; bracts lanceolate, pointed at the tip.
- Sepals: 3, free from each other, green, ovate, up to 2/5 inch long.
- Petals: 3, free from each other, white, ovate, up to 4/5 inch long.
- Stamens: Numerous.
- Pistils: Several, each with a superior ovary.
- Fruits: Achenes crowded together in a spherical head, each achene up to 1/6 inch long, with a tiny straight beak.
- Notes: The achenes are eaten by waterfowl.
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