Kerry Knudsen

Caloplaca obamae is a species of crustose lichen in the fungus genus Caloplaca. It is the first species to be named in honor of United States President Barack Obama. C. obamae was discovered in 2007 by Kerry Knudsen on Santa Rosa Island in California and published in March 2009. Knudsen stated that he chose to honor Obama for "his support of science and scientific education" and wrote the manuscript for publication of the species in the time between Obama's election and his inauguration.

Ramonia vermispora is a species of saxicolous (rock-dwelling) and crustose lichen in the family Gyalectaceae. Found in the Sonoran Desert region of the southwestern United States, it was formally described as a new species in 2008 by lichenologists James Lendemer and Karry Knudsen. The type specimen was collected in San Bernardino National Forest (Riverside County, California), at an elevation of 1,655 m (5,430 ft); here it was found growing on granitic rock in a shaded rocky outcrop in a woodland. The lichen is only known to occur at the type locality, which is part of the San Jacinto

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Lepraria friabilis is a species of leprose lichen in the family Stereocaulaceae. It has a disjunct distribution in the southeastern United States and southern California, where it grows exclusively on coniferous bark in humid environments such as swamps and stream valleys.

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Acarospora janae is a species of saxicolous (rock-dwelling) crustose lichen in the family Acarosporaceae. Described as new to science in 2011, it is known from the United States and Canada, where it grows on rock.

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Myriospora dilatata is a species of crustose lichen in the family Acarosporaceae. This lichen typically inhabits metal-rich environments, particularly those with elevated levels of copper and arsenic. First discovered at lake Torneträsk in Sweden, it has since been documented in various locations across Central and Northern Europe, including Germany, Norway, and the Czech Republic.

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Caeruleum is a genus of lichen-forming fungi in the family Acarosporaceae. Two species are currently recognized, C. heppii and C. immersum. Caeruleum is generally similar to the related genus Acarospora.

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Myriospora myochroa is a species of crustose lichen in the family Acarosporaceae. It forms distinctive patches that range from whitish-grey to dark brown on silicate rock surfaces. First discovered in Sweden in 2003, this lichen grows in diverse environments from coastal areas affected by sea spray to mountain regions above 2,400 metres in elevation. It prefers sheltered, moisture-retaining habitats such as undercut rock faces and overhangs that provide stable humidity conditions. With a broad Eurasian distribution, M. myochroa has been documented across multiple European countries including

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