Narrowleaf water plantain
Alisma gramineum · Aquatic plants
Whole plant · Photo: Andre Hosper / CC BY
Also called Grassleaf water plantain
How to identify Narrowleaf water plantain
- Narrow, strap like leaves
- Often ribbonlike underwater leaves
- Branched clusters of small white to pink flowers
- Short plants under 1 foot
Similar plants
Water plantain has wide oval leaves; arrowheads have arrow shaped leaves.
Growth profile
| Growing season | Grows from late spring, flowers July to September. |
|---|---|
| Starts growing | About 55 F water |
| Light | Full sun |
| Depth | Moist shoreline to about 3 feet of water |
| How it spreads | Seeds |
| Habitat | Shallow ponds, reservoir margins and ditches, often alkaline. |
Why it matters in a lake
Can grow fully submersed in deeper water.
Where it is found
- Idaho: Occasional
- Oregon: Occasional
- Wyoming: Occasional
Classification
| Kingdom | Plantae |
|---|---|
| Phylum | Tracheophyta |
| Class | Magnoliopsida |
| Order | Alismatales |
| Family | Alismataceae |
| Scientific name | Alisma gramineum |
Broadleaf cattail
Hardstem bulrush
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Soft rush
Yellow flag iris
Broadleaf arrowhead
Western water hemlock
Beaked sedge
Baltic rushNeed a hand?
Is it taking over your lake?
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