North America Native Plant

Ramalina Canariensis

Botanical name: Ramalina canariensis

USDA symbol: RACA12

Habit: lichen

Native status: Native to North America  

Ramalina canariensis: The Mysterious Hair-Like Lichen Hanging in Your Trees Have you ever noticed delicate, grayish-green strands hanging from tree branches like nature’s own Christmas tinsel? You might be looking at Ramalina canariensis, a fascinating lichen that’s more than just a pretty face in the forest. This North American native ...

Ramalina canariensis: The Mysterious Hair-Like Lichen Hanging in Your Trees

Have you ever noticed delicate, grayish-green strands hanging from tree branches like nature’s own Christmas tinsel? You might be looking at Ramalina canariensis, a fascinating lichen that’s more than just a pretty face in the forest. This North American native isn’t actually a plant at all – it’s a lichen, which makes it a pretty unique addition to our natural landscapes!

What Exactly Is Ramalina canariensis?

Before we dive deeper, let’s clear up what we’re dealing with here. Ramalina canariensis is a fruticose lichen, which means it’s actually a symbiotic partnership between a fungus and algae living together in perfect harmony. Unlike traditional plants, lichens don’t have roots, stems, or leaves, and they definitely don’t flower or produce seeds. Instead, they’re fascinating organisms that create their own food through photosynthesis while the fungal partner provides structure and protection.

This particular lichen species is native to North America, with its primary range extending along the western coastal regions, particularly in California and the Pacific Northwest. You’ll typically find it draping gracefully from the branches of oak trees, conifers, and other suitable host trees in these regions.

Identifying Ramalina canariensis in Your Landscape

Spotting this lichen is pretty straightforward once you know what to look for:

  • Pale grayish-green to yellowish-green color
  • Hair-like, branching strands that hang down from tree branches
  • Thin, flattened branches that can grow several inches long
  • Typically found hanging from the bark of trees rather than growing flat against surfaces
  • Has a somewhat brittle texture when dry

Is Ramalina canariensis Beneficial for Your Garden?

Absolutely! While you can’t exactly plant this lichen in the traditional sense, having it naturally occur in your landscape is actually a wonderful sign. Here’s why you should be happy to see it:

  • Air quality indicator: Lichens are incredibly sensitive to air pollution, so their presence indicates clean, healthy air around your property
  • Wildlife support: Birds often use lichen strands as nesting material, and some wildlife species nibble on lichens as a food source
  • Natural beauty: It adds a wild, ethereal quality to trees, especially beautiful when backlit by morning or evening sun
  • Low maintenance: Once established, it requires absolutely no care from you

Creating Lichen-Friendly Conditions

While you can’t plant Ramalina canariensis like a typical garden plant, you can certainly encourage its natural establishment:

  • Maintain clean air: Avoid using chemical sprays, pesticides, or herbicides near trees where you’d like to see lichens
  • Preserve mature trees: Lichens prefer established trees with stable bark
  • Ensure good air circulation: Lichens thrive in areas with good airflow
  • Be patient: Lichen establishment is a slow, natural process that can take years

A Few Important Notes

Remember that lichens are extremely sensitive to environmental changes. If you notice lichen populations declining in your area, it could indicate changes in air quality or other environmental factors. Also, never harvest lichens from the wild – they grow incredibly slowly, and removing them can damage both the lichen and its host tree.

If you’re lucky enough to have Ramalina canariensis gracing your trees, consider yourself blessed with both clean air and a beautiful natural display. These remarkable organisms remind us that some of nature’s most interesting inhabitants aren’t plants or animals at all, but something wonderfully in between!

Ramalina Canariensis

Classification

Group

Lichen

Kingdom

Fungi - Fungi

Subkingdom
Superdivision
Division

Ascomycota - Sac fungi

Subdivision
Class

Ascomycetes

Subclass
Order

Lecanorales

Family

Ramalinaceae C. Agardh

Genus

Ramalina Ach. - cartilage lichen

Species

Ramalina canariensis J. Steiner

Plant data source: USDA, NRCS 2025. The PLANTS Database. https://plants.usda.gov,. 2/25/2025. National Plant Data Team, Greensboro, NC USA