Rhodocollybia butyracea

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Rhodocollybia butyracea
Rhodocollybia butyracea051207D.jpg
Scientific classification
Kingdom: Fungi
Division: Basidiomycota
Class: Agaricomycetes
Subclass: Hymenomycetes
Order: Agaricales
Family: Marasmiaceae
Genus: Rhodocollybia
Species: R. butyracea
Binomial name
Rhodocollybia butyracea
(Bull.: Fr.) Lennox[1]

Collybia butyracea (Bull.: Fr.) Quélet

Rhodocollybia butyracea
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Mycological characteristics
gills on hymenium

cap is convex

or flat

hymenium is adnexed

or free
stipe is bare

spore print is cream

to buff
ecology is saprotrophic
edibility: edible

Rhodocollybia butyracea, common name Buttery Collybia,[2][3] is a species of fungus in the Marasmiaceae family of mushrooms.


The cap of this mushroom is 2 to 10 cm across. It is convex and becomes broadly convex or almost flat. When fresh, this species is smooth and moist. It has a reddish-brown colour fading to cinnamon.[4]

The gills are either free from the stem, or narrowly attached. They range from close to crowded and are whitish. Occasionally, they develop a pinkish tone as they age, and often form fine, jagged edges.

The stem is up to 10 cm long and 1 cm thick. It is normally somewhat club-shaped. It can either be moist or dry

The flesh of this species is white. There is no distinctive odor or taste.

The spores are pale yellowish, pale pinkish, or white.[4]


This species is saprobic. It decomposes litter from conifers, usually that of the Pinus genus,[4] and occasionally hardwoods.[5]


Rhodocollybia butyracea is quite widely distributed in North America.[4]


This mushroom is edible, but unsubstantial.



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