Triglochin palustris
Encyclopedia
Triglochin palustris or Marsh Arrowgrass is a variety of arrowgrass found in damp grassland usually on calcareous soils
, fens and meadows. It has a circumboreal distribution
, occurring throughout northern parts of the Northern Hemisphere. It can be found locally in the British Isles
especially the north..
The leaves are linear, 10 to 20 cm long, rounded on the lower side, deeply grooved on the other.
It has many 3 petalled flowers arranged in a long spike, with purple edged perianth segments, 2mm long. It flowers from June until August.
The fruits are club shaped, 10mm long and 2mm wide.
are more dense and like Sea Plantain. The flowers are fleshier. The fruits are oval, 4mm long, 2mm wide.
Limestone
Limestone is a sedimentary rock composed largely of the minerals calcite and aragonite, which are different crystal forms of calcium carbonate . Many limestones are composed from skeletal fragments of marine organisms such as coral or foraminifera....
, fens and meadows. It has a circumboreal distribution
Circumboreal Region
The Circumboreal Region is a floristic region within the Holarctic Kingdom in Eurasia and North America, as delineated by such geobotanists as Josias Braun-Blanquet and Armen Takhtajan....
, occurring throughout northern parts of the Northern Hemisphere. It can be found locally in the British Isles
British Isles
The British Isles are a group of islands off the northwest coast of continental Europe that include the islands of Great Britain and Ireland and over six thousand smaller isles. There are two sovereign states located on the islands: the United Kingdom of Great Britain and Northern Ireland and...
especially the north..
Description
It is a slender perennial herb 15 to 40cm tall. It has no stolons, and emits a pleasant aromatic smell when bruised.The leaves are linear, 10 to 20 cm long, rounded on the lower side, deeply grooved on the other.
It has many 3 petalled flowers arranged in a long spike, with purple edged perianth segments, 2mm long. It flowers from June until August.
The fruits are club shaped, 10mm long and 2mm wide.
Similar Species
Triglochin maritimum (Sea arrowgrass) is similar but has the following differences: it has stolons, is stouter. The leaves are fleshy and not furrowed above. It is not very aromatic. The racemeRaceme
A raceme is a type of inflorescence that is unbranched and indeterminate and bears pedicellate flowers — flowers having short floral stalks called pedicels — along the axis. In botany, axis means a shoot, in this case one bearing the flowers. In a raceme, the oldest flowers are borne...
are more dense and like Sea Plantain. The flowers are fleshier. The fruits are oval, 4mm long, 2mm wide.