Alisma lanceolatum

Tracheophyta MagnoliopsidaAlismataceaeAlismaAlisma lanceolatum


An emergent perennial herb, found in shallow water or on exposed mud at the edge of a wide range of water bodies, although in many areas it is particularly frequent in canals. It is most frequent in eutrophic, calcareous water and rooted in a fine substrate. Lowland.



World Distribution

Eurosiberian Southern-temperate element.

Broad Habitats

Standing water and canals

Light (Ellenberg): 8

Moisture (Ellenberg): 10

Reaction (Ellenberg): 7

Nitrogen (Ellenberg): 7

Salt Tolerance (Ellenberg): 0

January Mean Temperature (Celsius): 3.7

July Mean Temperature (Celsius): 16

Annual Precipitation (mm): 757

Height (cm): 100

Perennation - primary


Life Form - primary

Perennial hydrophyte (perennial water plant)

Comment on Life Form

"although a water plant, basic behaviour is as a rosette hemicryptophyte"



Clonality - primary

Little or no vegetative spread

Count of 10km squares in Great Britain: 464

Count of 10km squares in Ireland: 41

Count of 10km squares in the Channel Isles: 0

Atlas Change Index: 0.38

Weighted Changed Factor: 12

Weighted Change Factor Confidence (90%)


JNCC Designations