The habitat is the easiest factor to differentiate triglochin palustris from triglochin maritima; it also has a less-dense inflorescence, and more deeply grooved leaves.
Common name:
Marsh arrowgrass
Family:
Scientific name:
Triglochin palustris
Main flower color:
Range:
All across the British Isles; least common in the southeast
Height:
Up to 50 cm
Habitat:
Bogs, marshes and wet meadows; often calcareous locations
Flowers:
Globular, formed of six green segments, purple along the margin, with a woolly style at the tip. Arranged in an elongated, unbranched cluster, attached by very short stalks
Fruit:
Club-shaped pods, opening at the base
Leaves:
Long (up to 20 cm), narrow, linear, grass-like. Rounded on the lower surface, grooved on the upper surface
Season:
June to August
Rarity:
★★★★★
