Assessment Notes

Justification

Suillus grevillei 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

Suillus grevillei is common in Europe, Asia and 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

Suillus grevillei is very common in woodlands (forest, plantations, gardens and parks) under larch (Larix spp.), on sandy, humus-rich or fertile soil. It often fruits in large numbers. It is an ectomycorrhizal mushroom associating with larch (Larix spp.), rarely with Pseudotsuga spp.

---

Threats

---

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

Suillus grevillei is an edible mushroom, but is not one of the most appreciated of boletes.

---

Source and Citation

Dahlberg, A. 2019. Suillus grevillei (errata version published in 2022). The IUCN Red List of Threatened Species 2019: e.T122090805A223016083. Accessed on 22 November 2025.

---

• Country occurrence