Assessment Notes

Justification

Russula decolorans is a widespread, edible ectomycorrhizal fungus in Eurasia and North America. There is no evidence of decline. It can be locally abundant where suitable habitat exists. Therefore, it is assessed as Least Concern (LC).

---

Geographic range

Russula decolorans is common in temperate to subarctic and subalpine areas in Europe, Asia and in North America. The area of occupancy (AOO) of this species is much larger than 2,000 km², and its extent of occurrence (EOO) is much larger than 20,000 km².

---

Population and Trends

The population size is likely to be very large since this is such a widespread species, and more or less stable as there is no indication of any decline.

Population Trend: stable

---

Habitat and Ecology

Russula decolorans is an ectomycorrhizal mushroom in coniferous forests associating with conifers, especially with pine (Pinus spp.), but also in subarctic and subalpine areas with birch (Betula spp.). It is particularly common in nutrient poor lichen coniferous woodland.

---

Threats

There are no major threats to this species. It is commonly and widely found in woodlands.

---

Conservation Actions

No conservation measures are needed for this species since it is widespread and there are no major threats to it.

---

Use and Trade

Russula decolorans is an appreciated, edible wild mushroom.

---

Source and Citation

Dahlberg, A. 2019. Russula decolorans. The IUCN Red List of Threatened Species 2019: e.T122090737A223014355. https://dx.doi.org/10.2305/IUCN.UK.2019-3.RLTS.T122090737A223014355.en .Accessed on 3 February 2024

---

• Country occurrence