Lichen
is a mid aged green which is named after the subtle colour of the algae that ages stone so beautifully. Available in-store and online.
What are lichens? An expert guide to common UK lichens - Gardens Illustrated
Mariton: I Don't Just Love'em - I Lichen - Natural Lands
Lichen, Definition, Symbiotic Relationship, Mutualism, Types, & Facts
What Is a Lichen? Definition and Facts
In the Race to Live on Land, Lichens Didn't Beat Plants - The New York Times
Cup lichen, Description, Lichen, Species, Uses, & Facts
What is a Lichen? The British Lichen Society
Natural Connections: Not A Lowly Lichen, Recent News
In the Race to Live on Land, Lichens Didn't Beat Plants - The New
To think like a lichen
Earth Notes: Lichen, the Farmhand Fungi
Two's Company, Three's a Lichen? - The New York Times
Lichen on your trees? - The Treeman Lichen on trees?
Opportunistic lichen grows on ailing trees