Pulveroboletus ravenelii (Berk. & M.A. Curtis) Murrill
Family: Boletaceae
Pulveroboletus ravenelii image
National Mushroom Centre  
Mata, M., D. Penjor and S. Pradham. 2010. Fungi of Bhutan. National Mushroom Centre, Ministry of Agriculture and Forests, Thimphu, Bhutan.

Local name: No local name known

Edibility: Inedible.

Habitat: Terrestrial and scattered to gregarious.

Description: Cap: 2-10 cm diameter, convex becoming broadly convex, surface powdery when young with universal veil material, scaly, densely woolly between scales, red to reddish orange when young, becoming yellow to sulphur yellow with reddish orange scales, slowly bruising greenish blue. Hymenophore: 1-3 pores per mm, at first covered with a bright yellow veil, pores are round or angular whitish at first, becoming yellow to yellowish brown or olive, bruising greenish blue. Stem: 3-10 cm tall and up to1 cm wide, equal, surface powdery when young, then covered with long fibres from partial veil, veil remnants sulphur yellow, basal mycelium sulphur yellow. Ring:  Apical, membranous but not persistent, bright sulphur yellow. Flesh: White, often bruising blue when cut. Spore Print: Olive coloured.

Comments: The yellow powdery covering over the young fruit bodies and odour strong of chlorine are distinctive features for Pulveroboletus ravenelii.

Pulveroboletus ravenelii image
National Mushroom Centre  
Pulveroboletus ravenelii image
Alvarado, Eduardo  
Pulveroboletus ravenelii image
Alvarado, Eduardo