Name in North American Boletes: Bothia castanellus
- Genus 2: Suillus
- Species 2: castanellus
Common Name: “Netted Suillus”
- Common Name 2: “Chestnut Suillus”
Tells: Stem is often netted, esp. at the top. Chestnut-brown cap can have red- or yellow notes. Tan, buff, or golden- to pinkish-brown pores bruise tawny brown.
Other Information: Likes oak. The big, angular pores scream pure Suillus, but the dry (not viscid) cap and the netting on the stem make this a very unique mushroom. The name means “chestnut” & refers to the color of the cap, even though in some cases the cap can lighten up enough to be called “yellow-brown”.
Science Notes: DNA testing has moved this mushroom from Suillus to the newly resurrected, single-species Genus Bothia – and then to adjust the species name to a feminine ending that will match.
- NH4OH (Ammonia): Cap skin has a variable reaction: red or orange with a wine-colored flash, or orange-amber with a purplish/wine colored flash. Cap flesh turns very pale yellow.
- KOH: Cap skin turns dark brown, which fades to amber or yellow-amber. Cap flesh turns pale brown.
- FeSO4 (Iron Salts): Cap skin turns grayish. Cap flesh has no reaction.