genus

Rock Shields

Xanthoparmelia

Field notes

Xanthoparmelia (commonly known as green rock shields or rock-shield lichens) is a genus of foliose lichens in the family Parmeliaceae. This genus of lichen is commonly found in the United States, South America, southern Africa, Europe, Australia, and New Zealand.

The name means 'golden yellow parmelia'. The photobiont (photosynthetic partner) is Trebouxia (a genus of green algae).

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Range

United States

Greener is more native, amber more introduced; paler is less certain. How this was decided

Most observed native rock shields All

Native to the US, by observations.