Northern Prairie Wildlife Research Center
Western Wetland Flora
Field Office Guide to Plant Species
Triglochin maritimum L.
Family: Arrow-grass (Juncaginaceae)
- Flowering: May-August
- Field Marks: This species is recognized by its long, narrow basal leaves with a conspicuous ligule at the base, its slender spike-like raceme of greenish yellow, 3-parted flowers, and its 6 free pistils in each flower.
- Habitat: Marshes, wet meadows, particularly in alkaline areas.
- Habit: Perennial herb with a stout rhizome.
- Stems: Aerial stem leafless, up to 2 feet long, bearing only a terminal spike-like raceme of flowers, smooth.
- Leaves: All basal, elongated, linear, up to 1 foot long, usually about 1/2 as long as the plant, up to 1/6 inch wide, pointed at the tip, smooth; ligule up to 1/4 inch long.
- Flowers: Numerous in a terminal, spike-like raceme, the raceme up to 10 inches long;
bracts absent; flower stalks slender, up to 1/4 inch long.
- Sepals: 3, free from each other, greenish yellow, up to 1/10 inch long.
- Petals: 3, free from each other, greenish yellow, up to 1/10 inch long.
- Stamens: 6.
- Pistils: 6 per flower, united by their inner faces, each with a superior ovary.
- Fruits: Follicles 6, united by their inner faces, oblongoid, up to 1/6 inch long.
- Notes: This species, if eaten, is poisonous to livestock.
Previous Species -- Hooded Ladies'-tresses (Spiranthes romanzoffiana)
Return to Species List -- Group 4
Next Species -- Narrow-leaf Cattail (Typha angustifolia)