Pietrasiak N.

Joshua Tree National Park, CA, USA. Colorado Desert. Bajada made of granitic material. Sandy, gravelly soil, plants and well developed algal crusts. Pinto Wells.

Joshua Tree National Park, CA, USA. Colorado Desert. Bajada made of granitic material. Sandy, gravelly soil, plants and well developed algal crusts. Pinto Wells.

Joshua Tree National Park, CA, USA. Colorado Desert. Bajada made of granitic material. Sandy, gravelly soil, plants and well developed algal crusts. Pinto Wells.

Joshua Tree National Park, CA, USA. Mojave Desert. Sandy, gravelly soil from granitic outcrops, plants and well developed crust with algae, lichens, and mosses. Wonderland of Rocks.

Joshua Tree National Park, CA, USA. Colorado Desert. Sandy, gravelly soil from granitic parent material, plants and moderately developed algal crusts. East Cottonwood Basin.

Joshua Tree National Park, CA, USA. Colorado Desert. Bajada made of granitic material. Sandy, gravelly soil, plants and well developed algal crusts. Pinto Wells.

Joshua Tree National Park, CA, USA. Colorado Desert. Bajada made of granitic material. Sandy, gravelly soil, plants and well developed algal crusts. Pinto Wells.

Joshua Tree National Park, CA, USA. Colorado Desert. Bajada made of granitic material. Sandy, gravelly soil, plants and well developed algal crusts. Pinto Wells.

Joshua Tree National Park, CA, USA. Colorado Desert. Bajada made of granitic material. Sandy, gravelly soil, plants and well developed algal crusts. Pinto Wells.