Skip to main content


Hypogymnia (order Lecanorales) A genus of lichens, in which the thallus is foliose to sub-fruticose with radiating lobes; the upper surface is typically grey-green. Both surfaces are covered by a cortex. Rhizines are absent. Species are found on a range of substrates in cooler regions. Hypogymnia physodes is one of the commoner British lichens, and is fairly insensitive to atmospheric pollution.

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

  • MLA
  • Chicago
  • APA

"Hypogymnia." A Dictionary of Plant Sciences. . 15 Dec. 2018 <>.

"Hypogymnia." A Dictionary of Plant Sciences. . (December 15, 2018).

"Hypogymnia." A Dictionary of Plant Sciences. . Retrieved December 15, 2018 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.