Lexemuel Ray Hesler

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Entoloma serrulatum is a species of mushroom in the family Entolomataceae. It is found across North America.

Entoloma mougeotii is a species of fungus belonging to the family Entolomataceae. Synonym: Eccilia mougeotii Fr., 1873 (= basionym)

Entoloma mammosum, commonly known as the bell-shaped Nolanea, is a species of fungus in the family Entolomataceae. The fruit bodies are small and nippled, with a striate cap, salmon-colored gills, and a stately stalk. It is typically found growing in feather moss under spruce and Jack pine in the summer and fall. It is saprobic, and derives nutrients from rotting organic matter. The fungus was originally described by Carl Linnaeus in 1753 as Agaricus mammosus. American mycologist Lexemuel Ray Hesler transferred it to Entoloma in 1967.

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Lactarius argillaceifolius is a species of fungus in the family Russulaceae. The mushrooms have convex to flattened drab lilac-colored caps that are up to 18 cm (7.1 in) wide. The cream-colored gills are closely spaced together and extend slightly down the length of the stem, which is up to 9 cm (3.5 in) long by 3.5 cm (1.4 in) thick. The mushroom produces an off-white latex when injured that stains the tissue brownish. The variety megacarpus, with caps up to 27 cm (11 in) wide, occurs under coast live oak and tanoak in the Pacific Coast states and Baja California. Variety dissimilis,

Pholiota brunnescens, commonly known as the charcoal pholiota, is a species of mushroom in the family Strophariaceae. It is pyrophilous, meaning that it grows in burned areas after fires.

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Pholiota vernalis is a species of fungus belonging to the family Strophariaceae. It has cosmopolitan distribution.

Lactarius subflammeus, commonly known as the orange milk cap, is a North American milkcap mushroom in the family Russulaceae. The slimy to sticky fruiting bodies have scarlet caps that soon fade to bright orange; the typically longer-than-wide orange stipe contrasts with whitish gills. When cut it exudes white, acrid latex, and it is considered inedible. Described in 1979 by Lexemuel Ray Hesler and Alexander H. Smith, it belongs to Lactarius sect. Russularia and fruits in late summer to autumn as an ectomycorrhizal associate of conifer forests, especially in the Pacific Northwest; NatureServe

Lactarius pseudomucidus, commonly known as the slimy milk cap, is a mucilaginous species of fungus native to North America.

Lactarius pallescens, commonly known as the pallid purple-staining milk cap, is a Western North American "milk-cap" mushroom, of which the milk turns violet when the flesh is damaged. The fungi generally identified as L. pallescens are part of a complex of closely related species and varieties which have a peppery taste and are difficult to delimit definitively. The gray-brown cap ranges from 3 to 10 cm in width, with a mucilaginous surface, whitish flesh and white latex. The gills are whitish and sometimes slightly decurrent. The viscid stalk ranges from 3 to 8 cm long and 1 to 2 cm wide.

Lactarius fallax, commonly known as the velvety milk cap, is a species of fungus in the family Russulaceae. Its fruit bodies are medium-sized, with velvety, brown to blackish caps up to 2–9 cm (0.79–3.54 in) in diameter bearing a distinct pointed umbo. The caps are supported by velvety stems up to 8 cm (3.1 in) long and 1.5 cm (0.6 in) thick. The mushroom oozes a whitish latex when it is cut, and injured tissue eventually turns a dull reddish color. The eastern North American and European species L. lignyotus is closely similar in appearance, but can be distinguished by its differing range.

Hygrophorus bakerensis, commonly known as the Mt. Baker waxy cap, the brown almond waxy cap or the tawny almond waxy cap, is a species of fungus in the family Hygrophoraceae. It is characterized by its medium to large, relatively slender-statured fruit bodies with an almond odor, and growth often on or near rotting conifer wood. The slimy cap is brown in the center and cream to white near its curved edges. The gills and the stem are white, and in moist environments are often covered with droplets of a translucent liquid. The mushroom is known only from the United States, where it is common in

Gymnopilus obscurus is a species of mushroom-forming fungus in the family Hymenogastraceae.

Gymnopilus lepidotus is a species of mushroom-forming fungus in the family Hymenogastraceae.

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Lactarius rubrilacteus is a species of fungus of the genus Lactarius. It is also known as the bleeding milkcap. The mushroom is typically orangish-brown but bruises green. The cap is 6–14 centimetres (2+1⁄4–5+1⁄2 in) wide and the stem up to 6 cm long. The flesh often exudes a latex when cut and the spore print is beige. Growing in western North America under conifers from summer to fall, the mushroom is edible but of low interest due to its grainy texture.

Lactarius olympianus, commonly known as the olympic milk cap, is a species of mushroom in the family Russulaceae.

Lactarius olivaceoumbrinus, commonly known as toadskin milk cap, is a species of mushroom in the family Russulaceae. It is found in Northern California, the Pacific Northwest, and Uttarakhand, India.

Lactarius kauffmanii is a species of mushroom in the family Russulaceae. It is found in Western North America.

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Gymnopilus ventricosus, commonly known as the jumbo gym or western jumbo gym, is a species of mushroom in the family Hymenogastraceae. It was first described from the Stanford University campus by Franklin Sumner Earle as Pholiota ventricosa in 1902.

Gymnopilus fulvosquamulosus is a species of mushroom-forming fungus in the family Hymenogastraceae.