Roger Norman Hilton

Amanita xanthocephala, known as the vermilion grisette, pretty grisette or vermilion amanita is a colourful mushroom of the genus Amanita. It is found in Australia in association with Eucalyptus and may be toxic to humans.

Hebeloma aminophilum, commonly known as the ghoul fungus, is a species of mushroom in the family Hymenogastraceae. Found in Western Australia, it gets its common name from the propensity of the fruiting bodies to spring out of decomposing animal remains.

Lactarius eucalypti is a species of milk-cap fungus in the family Russulaceae. Found in Australia, it was described as new to science in 1987 by Orson K. Miller, Jr. and Roger N. Hilton. The mushroom grows on the ground in woodlands of jarrah (Eucalyptus marginata), karri (E. diversicolor) and marri (Corymbia calophylla). Fruiting only generally occurs during years of higher rainfall, the mushrooms appearing in May and June. The orange-brown cap is convex and may become flat with age, and measures 1.8 to 3.1 cm across.

Russula clelandii is a species of fungus in the family Russulaceae. Found in Australia, it was described as new to science in 1987. The fungus fruits on the ground in mixed woodlands of jarrah (Eucalyptus marginata) and karri (E. diversicolor), plants with which it is suspected of forming ectomycorrhizae. Fruitbodies are similar in morphology to the North American species Russula mariae. The specific epithet honours Australian naturalist John Burton Cleland.

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