Ernst E. Both

Boletus separans is a species of bolete fungus in the family Boletaceae.

Buchwaldoboletus pseudolignicola is a species of bolete fungus in the family Boletaceae native to Japan.

Tylopilus atronicotianus, commonly known as the false black velvet bolete, is a bolete fungus in the family Boletaceae. First described scientifically in 1998, it is known only from the eastern United States.

Chalciporus piperatoides is a small-pored species of mushroom in the family Boletaceae. It is found in woodland in North America and closely resembles Chalciporus piperatus but can be distinguished by its flesh and pores staining blue after cutting or bruising. It has a less peppery taste.

Buchwaldoboletus xylophilus is a species of bolete fungus in the family Boletaceae native to Asia, found on wood. It has a convex brown cap, and a red-brown stipe. Its edibility is unknown.

Buchwaldoboletus acaulis is a species of bolete fungus in the family Boletaceae native to Lesser Antilles and Martinique. Found on wood in xero-mesophytic forests, it has a convex bright yellow cap, sulfur-yellow pores and stipe, and a brown spore print. Its edibility is unknown.

Boletus subcaerulescens is a basidiomycete fungus of the genus Boletus found in northeastern North America. The fruiting bodies are found associated with pine and spruce. The cap is up to 18 cm wide, convex to flat, and brown in color. The tubes are yellow and stain blue (later becoming brown) when bruised, while the flesh is white to buff and does not stain when cut. The stem is brown like the cap and has a light-colored reticulate texture. The specific epithet is from Latin: sub- + caeruleus + -escens, literally "becoming dark blue beneath". Phylogenetic analysis has shown B.

Boletus nobilissimus is an edible basidiomycete mushroom, of the genus Boletus in the family Boletaceae. Long considered a variety of European Boletus edulis, it has become a species on its own in 2000, with 2010 molecular study finding that it is most closely related to B. atkinsonii, B. quercophilus of Costa Rica and then B. barrowsii of western United States. It is found in abundance in open oak forests after heavy rains and warm weather (30 °C or more).

Boletus carminiporus is a species of bolete fungus in the family Boletaceae. Described as new to science in 1998, the species is found in the southern United States where it grows in a mycorrhizal association with various trees in mixed forests.

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Tylopilus atratus is a fungus of the genus Tylopilus native to North America. It was described scientifically by Ernst Both in 1998.

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Boletus projectelloides is a species of bolete fungus in the family Boletaceae. Found in Belize, it was described as new to science in 2007.

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Buchwaldoboletus parvulus is a species of bolete fungus in the family Boletaceae native to India. It grows on dead bamboo stumps, has a convex bright yellow cap, yellow to red-brown pores, and a yellow above, reddish below stipe.

Buchwaldoboletus kivuensis is a species of bolete fungus in the family Boletaceae native to Africa.

Buchwaldoboletus duckeanus is a species of bolete fungus in the family Boletaceae native to South America.

Buchwaldoboletus brachyspermus is a species of bolete fungus in the family Boletaceae native to Martinique.

Boletus roseolateritius is a bolete fungus found in the southern United States and northeast Mexico. It was described as a new species in 2003 by Alan Bessette, Ernst Both, and Dail Dunaway. The type collection was made in Mississippi, where it was found growing on the ground under American beech (Fagus grandifolia), near hickory and oak. The bolete was reported from a Mexican beech (Fagus mexicana) forest in Hidalgo, Mexico in 2010. The fruit body has a cap that changes color depending on its age: it is initially dark reddish to orangish, later reddish brown at maturity, fading to brownish

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Lanmaoa pallidorosea, formerly known as Boletus pallidoroseus, is a fungus of the genus Lanmaoa native to North America. It was described scientifically by Ernst Both in 1998. It was transferred from Boletus to Lanmaoa in 2019.

Boletus abruptibulbus is a species of bolete mushroom belonging to the Boletaceae family. Described as new to science in 2009, it is found only on the Gulf Coast of the Florida Panhandle, where it grows on the ground in coastal sand dunes, one of only three North American boletes known to favor this habitat. The fruit bodies have convex brownish caps up to 8 cm (3.1 in) in diameter, supported by solid yellowish to reddish stems measuring 3–5 cm (1.2–2.0 in) long by 10–15 mm (0.4–0.6 in) thick. The pores on the underside of the cap measure about 1–2 mm in diameter and are initially pale yellow