Tripolium pannonicum, Sea Aster

Common Name: Sea Aster

Tripolium pannonicum, more commonly known as Sea Aster, is a flowering plant confined in its distribution to salt marshes, estuaries and occasionally to inland salt works.

It is a perennial, growing up to 50 cm tall with fleshy lanceolate leaves and pale purple-blue (sometimes nearly white, as in photos above) 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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