Arrowhead
Arrowhead in the Lancaster canal
Flower spike
Close-up of flowers
Leaves
Sagittaria sagittifolia
Alismataceae
July to August
It is found in most of the country, but is absent from
parts of the North and the far Southwest.
See the BSBI distribution map for Arrowhead
It grows in shallow, still or slowly moving, water, e.g.,
ditches, lakes, ponds and canals.
Arrowhead is a native, perennial, stoloniferous herb
growing up to 60cm.
In rivers it may be present only as submerged leaves.
In slow moving water it has emergent leaves and flowers.
Flowers are 6mm and are open mainly in the early
morning.
The 3 petals have purple patches at the base.
Anthers are purple and numerous.
Submerged leaves are ribbon-like.
Aerial leaves are prominently arrow-shaped.
Arrowhead overwinters as tubers produced on stolons in
the leaf axils.
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Arrowhead in the Lancaster canal
Flower spike
Close-up of flowers
Leaves
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