Russula brevipes
| Russula brevipes | |
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| Scientific classification | |
| Kingdom: | Fungi |
| Division: | Basidiomycota |
| Class: | Agaricomycetes |
| Order: | Russulales |
| Family: | Russulaceae |
| Genus: | Russula |
| Species: | R. brevipes |
| Binomial name | |
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Russula brevipes Peck (1890) |
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| Synonyms | |
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| Russula brevipes | |
|---|---|
| Mycological characteristics | |
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gills on hymenium |
 
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cap is flat or infundibuliform |
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hymenium is decurrent |
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stipe is bare |
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spore print is white |
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ecology is mycorrhizal |
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edibility: edible |
cap is flat
Russula brevipes is a species of mushroom commonly known as the short-stemmed russula or the stubby brittlegill. It is widespread in North America, and was reported from Pakistan in 2006. The fungus grows in a mycorrhizal association with trees from several genera, including fir, spruce, Douglas-fir, and hemlock. Fruit bodies are white and large, with convex to funnel-shaped caps measuring 7–30 cm (3–12 in) wide set atop a thick stipe up to 8 cm (3 in) long. The gills on the cap underside are closely spaced and sometimes have a faint bluish tint. Spores are roughly spherical, and have a network-like surface dotted with warts.
The mushrooms of Russula brevipes often develop under masses of conifer needles or leaves of broadleaved trees, and fruit from summer to autumn. Forms of the mushroom that develop a bluish band at the top of the stipe are sometimes referred to as variety acrior. Although edible, Russula brevipes mushrooms have a bland or bitter flavor. They become more palatable once parasitized by the ascomycete fungus Hypomyces lactifluorum, a bright orange mold that covers the fruit body and transforms them into lobster mushrooms.
Russula brevipes was initially described by American mycologist Charles Horton Peck in 1890, from specimens collected in Quogue, New York. It is classified in the subsection Lactaroideae, a grouping of similar Russula species characterized by having whitish to pale yellow fruit bodies, compact and hard flesh, abundant lamellulae (short gills), and the absence of clamp connections. Other related Russula species with a similar range of spore ornamentation heights include Russula delica, R. romagnesiana, and R. pseudodelica.
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