Sea aster

Tripolium pannonicum

"Tripolium pannonicum", called sea aster or seashore aster and often known by the synonyms "Aster tripolium" or "Aster pannonicus", is a flowering plant, native to Eurasia and northern Africa, that is confined in its distribution to salt marshes, estuaries and occasionally to inland salt works.
Sea aster (Tripolium pannonicum) Flowers of the sea aster (Tripolium pannonicum) Fall,Geotagged,Netherlands,Sea aster,Tripolium pannonicum,flora

Appearance

It is a perennial growing up to 50 cm tall with fleshy lanceolate leaves and purple ray florets flowering from July to September. The plants tend to be short-lived and populations need significant new recruitment each year from new seedlings.

There are rayed as well as rayless varieties and only the former have long blue or white florets. The rayless form is yellow. The plant flowers well into autumn and hence provides a valuable source of nectar for late-flying butterflies such as painted lady and red admiral.

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Taxonomy
KingdomPlantae
DivisionAngiosperms
ClassEudicots
OrderAsterales
FamilyAsteraceae
GenusTripolium
SpeciesT. pannonicum