Skip to main content


Eryngium (sea holly; family Umbelliferae) A genus of shrubby, often spiny, perennial herbs which are unlike the characteristic umbellifers in appearance. The lobed or deeply cut leaves are toothed and without stipules. The sessile flowers are held in a dense head surrounded by leafy, spiky, and showy bracts. The calyx teeth are often sharp, rigid, and longer than the petals. The 5 petals are narrow and notched, with free stamens and an inferior ovary with 2 unilocular carpels. The fruit is a 2-celled schizocarp which splits into 2 single-seeded fruits. There are about 230 species, found in temperate and tropical regions, where they are often found in arid conditions.

Cite this article
Pick a style below, and copy the text for your bibliography.

  • MLA
  • Chicago
  • APA

"Eryngium." A Dictionary of Plant Sciences. . 22 Mar. 2019 <>.

"Eryngium." A Dictionary of Plant Sciences. . (March 22, 2019).

"Eryngium." A Dictionary of Plant Sciences. . Retrieved March 22, 2019 from

Learn more about citation styles

Citation styles gives you the ability to cite reference entries and articles according to common styles from the Modern Language Association (MLA), The Chicago Manual of Style, and the American Psychological Association (APA).

Within the “Cite this article” tool, pick a style to see how all available information looks when formatted according to that style. Then, copy and paste the text into your bibliography or works cited list.

Because each style has its own formatting nuances that evolve over time and not all information is available for every reference entry or article, cannot guarantee each citation it generates. Therefore, it’s best to use citations as a starting point before checking the style against your school or publication’s requirements and the most-recent information available at these sites:

Modern Language Association

The Chicago Manual of Style

American Psychological Association

  • Most online reference entries and articles do not have page numbers. Therefore, that information is unavailable for most content. However, the date of retrieval is often important. Refer to each style’s convention regarding the best way to format page numbers and retrieval dates.
  • In addition to the MLA, Chicago, and APA styles, your school, university, publication, or institution may have its own requirements for citations. Therefore, be sure to refer to those guidelines when editing your bibliography or works cited list.