Lichens are highly specialized symbioses between heterotrophic fungi and photoautotrophic green algae or cyanobacteria. The mycobionts of many lichens produce morphologically complex thalli to house ...

It took us an hour and a half to walk the 100 yards between the library and the village hall. Passers-by gave us curious looks: eight people closely studying the stones in a wall or the trunk of a ...

I saw this lichen on a living tree recently. It was growing well, confirming the clean air of Connemara. Paul Dunne, Co Galway This is Flavoparmelia caperata, a large foliose lichen that is sensitive ...

After the distraction of fall leaves has passed, don’t assume that your garden is dormant. It’s time to appreciate the beauty of lichen. By Margaret Roach What are lichens? They are neither plant nor ...

'British soldier' lichen growing on rock. (Clay Wollney) For the most part, lichens growing on trees is a good thing, not harmful to the trees. However, weak or dying trees may have a lot of lichens, ...

March in the Northland is a month of great changes and a plethora of nature happenings. It is another month when the weather seems to get the most attention. In the beginning, it is still winter; cold ...

Some folks think lichen is bad for their trees. Those people can be spotted standing out in the hot sun picking little gray-green tufts off their tree trunks like a woodpecker hunting for bugs. But it ...

Dawn Brennan inspects the bark of a tree covered in several different lichens during a Lichen in the Winter World walk held by the Glacier Institute around Apgar in Glacier National Park on Saturday, ...

65 million years ago, a meteor catastrophically changed our planet’s biodiversity. All non-avian dinosaurs went extinct. By some estimates, 15,000 teragrams (that’s equal to the mass of 10 million ...