Hördur Kristinsson

Cladonia imbricarica is a species of terricolous (ground-dwelling), fruticose lichen in the family Cladoniaceae. Originally found in Iceland, it was described as new to science in 1974. It has since been identified in continental Europe and North America.

Visit the page for more details.

Visit the page for more details.

Visit the page for more details.

Cladonia islandica is a species of fruticose lichen in the family Cladoniaceae. It is endemic to Iceland, where it grows on moss-covered rocks and stone walls. The lichen was described as a new species in 2009 by Hördur Kristinsson and Teuvo Ahti. The type specimen was collected by Kristinsson from Herdisarvik, Árnessýsla (Southern Region) in 1978. It has been collected from various locations around Iceland, but is most common around the lake Mývatn.

Cladonia glacialis is a rare species of fruticose lichen in the family Cladoniaceae. It is only known from a single locality by a glacier in central Iceland.