Mark T. Banik

Rhytisma americanum is a species of ascomycete fungus in the family Rhytismataceae. It was described in 1998 by W. Hudler and M. Banik in the journal Mycotaxon. The species belongs to the genus Rhytisma, a group of tarspot fungi within the order Rhytismatales.

Laetiporus conifericola is a species of polypore fungus in the family Fomitopsidaceae. It is found in western North America ranging from California to Alaska, where it grows as a plant pathogen on conifer trees, particularly fir, spruce, and hemlock. Fruit bodies of the fungus comprise overlapping pore-bearing plates, measuring collectively up to 60 cm (24 in) across, and up to 4 cm (2 in) thick. Their color ranges from bright orange to salmon orange on the upper surface of the cap and stipe, with a yellow pore surface on the cap underside. Spores are egg-shaped, smooth, hyaline

Laetiporus huroniensis is a species of polypore fungus in the family Fomitopsidaceae. It is found in the Great Lakes region of eastern North America, where it fruits on large logs in old growth conifer forests. The type collection, made in Ottawa National Forest in September 1999, was found fruiting on Tsuga canadensis. It was one of three new Laetiporus species published in 2001, which were distinguished genetically from the widespread Laetiporus sulphureus; the others were L. conifericola and L. gilbertsonii.

Laetiporus caribensis is a species of polypore fungus in the family Fomitopsidaceae. It is found in the Caribbean Islands and in Central America, where it causes a brown rot on tropical hardwood trees. It was described as new to science in 2012 by Mark Banik and Daniel Lindner. The type collection was made in El Yunque National Forest, Puerto Rico, where the fungus was found fruiting on a snag of Guarea guidonia.

Armillaria altimontana is a species of agaric fungus in the family Physalacriaceae. The species, found in the Pacific Northwest region of North America, was officially described as new to science in 2012. It was previously known as North American biological species (NABS) X. It grows in high-elevation mesic habitats in dry coniferous forests. This species has been found on hardwoods and conifers and is associated most commonly with fir-dominated forest types in southern British Columbia, Washington, Oregon, Idaho and northern California. A. Altimontana competes directly with A. solidipes, and

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