Seasonal Wild Flowers

Marsh Arrowgrass

Triglochin palustre

Juncaginaceae

May to August

It is found throughout the country except for parts of the

Southwest and the Southeast.

See the BSBI distribution map for Marsh Arrowgrass

It grows in wet grassy habitats such as damp pastures,

inland marshes and saltmarshes.

Marsh Arrowgrass is a native, rhizomatous, perennial herb,

growing up to 60cm.

It is a monocoteledon.

Flowers are on long, slender spikes.

The 6 perianth segments are purple edged.

The 6 stamens and 6 styles form a short white tuft

above the ovary.

Fruits are fatter than in Sea Arrowgrass.

The leaves are grooved, whereas in Sea Arrowgrass

(also May) they are flat.

Marsh Arrowgrass, upper saltmarsh, Lune estuary

Tuft of stamens and styles above segments

Fruits emerging above perianth segments

Fruits with remains of styles

Grooved leaves