Lichens
This gallery contains 26 photos of lichens, which form as a symbiotic relationship between an algae and a fungus. They are classified under the fungus kingdom and are therefore not plants.
Individual Pictures (26)
![A Close-Up of a Lichen Thallus](https://etc.usf.edu/clippix/pix/a-close-up-of-a-lichen-thallus_thumb.jpg)
![A Lichen Encrusted Stone Surface](https://etc.usf.edu/clippix/pix/a-lichen-encrusted-stone-surface_thumb.jpg)
![A Lichen Encrusted Stone Surface with Some Moss](https://etc.usf.edu/clippix/pix/a-lichen-encrusted-stone-surface-with-some-moss_thumb.jpg)
![A Rock Covered with Lichen Thalli](https://etc.usf.edu/clippix/pix/a-rock-covered-with-lichen-thalli_thumb.jpg)
![A Rock That Has Been Heavily Colonized by Lichen Thalli](https://etc.usf.edu/clippix/pix/a-rock-that-has-been-heavily-colonized-by-lichen-thalli_thumb.jpg)
![Bright Green Lichens on Darkly Colored Bark of a Tree](https://etc.usf.edu/clippix/pix/bright-green-lichens-on-darkly-colored-bark-of-a-tree_thumb.jpg)
![Close-Up of Lichens at Boyce Park](https://etc.usf.edu/clippix/pix/close-up-of-lichens-at-boyce-park_thumb.jpg)
![Group of Lichens Covering a Tree's Bark](https://etc.usf.edu/clippix/pix/group-of-lichens-covering-a-trees-bark_thumb.jpg)
![Large Lichen Thalli Covering a Rock](https://etc.usf.edu/clippix/pix/large-lichen-thalli-covering-a-rock_thumb.jpg)
![Lichen on Log](https://etc.usf.edu/clippix/pix/lichen-on-log_thumb.jpg)
![Lichen on Tree Bark](https://etc.usf.edu/clippix/pix/lichen-on-tree-bark_thumb.jpg)
![Lichen on Tree Trunk](https://etc.usf.edu/clippix/pix/lichen-on-tree-trunk_thumb.jpg)
![Lichen Thalli on the Surface of a Frost Wedged Rock](https://etc.usf.edu/clippix/pix/lichen-thalli-on-the-surface-of-a-frost-wedged-rock_thumb.jpg)
![Lichens at Boyce Park](https://etc.usf.edu/clippix/pix/lichens-at-boyce-park_thumb.jpg)
![Lichens at the Flamingo Marina of Everglades National Park](https://etc.usf.edu/clippix/pix/lichens-at-the-flamingo-marina-of-everglades-national-park_thumb.jpg)
![Lichens Growing on a Milkbark Tree](https://etc.usf.edu/clippix/pix/lichens-growing-on-a-milkbark-tree_thumb.jpg)
![Lichens on a Rock](https://etc.usf.edu/clippix/pix/lichens-on-a-rock_thumb.jpg)
![Lichens on Bark of Tree](https://etc.usf.edu/clippix/pix/lichens-on-bark-of-tree_thumb.jpg)
![Lichens that have Nearly Covered Trunk of Tree](https://etc.usf.edu/clippix/pix/lichens-that-have-nearly-covered-trunk-of-tree_thumb.jpg)
![Pale-Green Lichens at Boyce Park](https://etc.usf.edu/clippix/pix/pale-green-lichens-at-boyce-park_thumb.jpg)
![Resurrection Fern and Lichen](https://etc.usf.edu/clippix/pix/resurrection-fern-and-lichen_thumb.jpg)
![Resurrection Fern (Close-Up)](https://etc.usf.edu/clippix/pix/resurrection-fern-close-up_thumb.jpg)
![Thick Lichen Coverage on Tree Bark](https://etc.usf.edu/clippix/pix/thick-lichen-coverage-on-tree-bark_thumb.jpg)
![Whitish-Green Lichens Growing on Bark of a Tree](https://etc.usf.edu/clippix/pix/whitish-green-lichens-growing-on-bark-of-a-tree_thumb.jpg)
![Wilson Mountain-Ash Tree Covered With Lichens](https://etc.usf.edu/clippix/pix/wilson-mountain-ash-tree-covered-with-lichens_thumb.jpg)
![Wolf Lichens Growing on Reddish-Brown Bark](https://etc.usf.edu/clippix/pix/wolf-lichens-growing-on-reddish-brown-bark_thumb.jpg)
This gallery contains 26 photos of lichens, which form as a symbiotic relationship between an algae and a fungus. They are classified under the fungus kingdom and are therefore not plants.