A word about mosses

Mosses are delightful little plants in a division called Bryophytes. Real plants, although very capable of confusing people. Lichens are, of course, not plants.

See also Mosses and Liverworts, on this site.

We casually call several things “mosses” that are in fact lichens. Here are a few of them:

    • Oakmoss is the lichen Evernia prunastri. It is commercially collected in Europe and used as a fixative in perfumes. It is also available as extracts.
Cetraria islandica, a true lichen known as Icelandic moss, captured as an ingredient in "Icelandic schnapps."

Cetraria islandica, a true lichen known as Icelandic moss, captured as an ingredient in “Icelandic schnapps.”

  • Iceland moss is the Arctic and alpine lichen Cetraria islandica, found at higher elevations in Colorado and throughout the Rocky Mountains.
  • Lungmoss is Lobaria pulmonaria, a large tree lichen found in moist habitats in the Pacific Northwest and elsewhere.

Others fall into other parts of the tree of life:

    • Irish moss (seaweed), by Franz Kohler.

      Irish moss (seaweed), by Franz Kohler.

      Irish moss, Chondrus crispus, is a red alga, aka “seaweed.” In products, you can spot it as carrageenan.
      or

    • Irish moss can be a true flowering plant, Sagina subulata, used as a ground cover. Sometimes it’s also called Scotch moss.
Spanish moss, Tillandsia

Spanish moss, Tillandsia

  • Spanish moss is also a true flowering plant. Growing on trees in the Southeast U.S., it is a plant related to pineapples (Bromeliaceae), Tillandsia usneoides. (Note that its scientific name reminds us it looks like the lichen genus Usnea.)

Can you think of more “not mosses”? If so, share them in the comments and we’ll add them to the list.

Learn more about real mosses:

Moss Plants and More, a great science blog

By the way, peat moss is a REAL moss, Sphagnum spp.

1 thought on “A word about mosses

  1. Pingback: California gets a State Lichen! | Colorado Lichens and Friends

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s