Free Lichen Identifier - Identify Lichens by Picture Online Free
Identify any lichen instantly with our free online lichen identifier. Upload a picture and discover what lichen is this with AI-powered image recognition. Fast, accurate, and completely free lichen identification.
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Orange crusts on a stone wall, gray-green leafy patches on an apple tree, a beard of pale threads hanging from a spruce: these are lichens, not mosses or molds. Our lichen identifier names the lichen in your photo, returning its scientific name with a link to read more. Lichens are partnerships between a fungus and algae or cyanobacteria, so many species are best identified to genus from a photo.
How It Works
Photograph the lichen up close in soft light, filling the frame so the edges, surface texture and any cups or discs are visible; include a coin or fingertip for scale. Note what it grows on, whether bark, rock or soil. The result is the scientific name; some species can only be confirmed with chemical spot tests or a microscope.
Key Benefits
- Tells crusty (crustose), leafy (foliose) and shrubby (fruticose) lichens apart
- Recognizes common species like the orange Xanthoria parietina on walls and branches
- Identifies beard lichens like Usnea, which have a stretchy white central cord inside the strands
- Reassures gardeners: lichens on tree bark do not harm the tree
- Free in the browser, one identification per day
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Ready to identify your lichen?
What Our Users Say
Trusted by nature enthusiasts worldwide
out of 5 based on 15,847 reviews
This plant identifier is amazing! I finally know all the plants in my garden. The AI is incredibly accurate.
Maria G.
Gardener
Accurate identification even for rare species. This is an essential tool for my fieldwork research.
James T.
Botanist
I use it on every hike. The app identified a rare orchid I found! So easy to use.
Sophie L.
Plant Enthusiast
Perfect companion for my nature photography. Quick, reliable, and always accurate.
Robert K.
Nature Photographer
Essential tool for my work. Saves hours of research time identifying plants for clients.
Emma W.
Landscape Designer
Best plant app I have ever used. Works great and is very accurate on trail plants!
Carlos M.
Hiker
Frequently Asked Questions
Common questions about lichen identifier
Upload a close, sharp photo of the lichen with its edges visible and note what it grows on. The tool returns the scientific name, often at the genus level.
No, lichens only use bark as a surface to grow on and do not take nutrients from the tree. They are more visible on slow-growing or declining trees because there is more light and less bark shedding.
Moss has tiny green leaves on soft stems and turns bright green when wet; lichens have no leaves and are usually gray, green-gray, yellow or orange, with a crusty, leafy or shrubby texture.
A few have been eaten after special preparation, but some, like wolf lichen, are poisonous. Never eat a lichen based on an app identification.
Many lichens are sensitive to air pollution, so a variety of leafy and shrubby lichens often indicates relatively clean air. Crust lichens tend to be more tolerant.
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