Tripolium pannonicum

Tripolium pannonicum, called sea aster[2] or seashore aster[3] and often known by the synonyms Aster tripolium or Aster pannonicus, is a flowering plant, native to Eurasia and northern Africa,[4][1] that is confined in its distribution to salt marshes, estuaries and occasionally to inland salt works.

Sea aster
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Asterales
Family: Asteraceae
Genus: Tripolium
Species:
T. pannonicum
Binomial name
Tripolium pannonicum
(Jacq.) Dobrocz.[1]
Synonyms[1]
  • Aster longicaulis (DC.) Dufour
  • Aster pannonicus Jacq.
  • Aster tripolium subsp. longicaulis (DC.) Nyman
  • Aster tripolium subsp. pannonicus (Jacq.) Soó
  • Tripolium longicaule (DC.) Dufour
  • Tripolium vulgare Nees, nom. illeg.
  • Tripolium vulgare var. longicaule DC.

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.

References
  1. Greuter, W. (2006), "Tripolium pannonicum", in Greuter, W.; Raab-Straube, E. von (eds.), Euro+Med Plantbase - the information resource for Euro-Mediterranean plant diversity, retrieved 2014-08-23
  2. "Tripolium pannonicum". Natural Resources Conservation Service PLANTS Database. USDA. Retrieved 15 December 2015.
  3. English Names for Korean Native Plants (PDF). Pocheon: Korea National Arboretum. 2015. p. 367. ISBN 978-89-97450-98-5. Archived from the original (PDF) on 25 May 2017. Retrieved 26 January 2017 – via Korea Forest Service.
  4. "Tripolium pannonicum". Germplasm Resources Information Network (GRIN). Agricultural Research Service (ARS), United States Department of Agriculture (USDA). Retrieved 22 December 2017.


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