Sea holly is a common name for several plants and may refer to:
* ''
Acanthus ebracteatus''
* ''
Eryngium
''Eryngium'' is a genus of flowering plants in the family Apiaceae. There are about 250 species.Wang, P., et al. (2012)Phytochemical constituents and pharmacological activities of ''Eryngium'' L. (Apiaceae). ''Pharmaceutical Crops'' 3 99-120. The ...
'' species, especially:
** ''
Eryngium maritimum''
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