The medicinal mushroom Hydnellum peckii
The bleeding tooth fungus, Hydnellum peckii Banker
Cap: up to 15 cm in diameter; convex or plane; surface at first finely tomentose; white, exuding red droplets, when young, becoming brown or gray with age.
Flesh: soft but rather tough; brownish.
Teeth: 1-5 mm long; grayish-white at first, becoming reddish-brown with age.
Stem: up to 8 cm long; central or off-center; surface like felt; whitish-gray to reddish-brown; base terminating in a white myceloid root.
Spores: brown; subglobose; tuberculate; warted; 4.5-5.5 x 3.5-4.5 µ.
Taste: slightly bitter, odor none.
Habitat: coniferous woods, late summer to autumn.
Calodon diabolus (Banker) Snell
Calodon peckii (Banker) Snell & E.A. Dick
Hydnellum diabolus Banker
Hydnellum rhizopes Coker
Hydnum diabolus (Banker) A.H. Sm.
Hydnum peckii (Banker) Sacc.
Bleeding tooth fungus
Strawberries and cream
Red juice tooth
Screening of a 70% ethanolic extract of Hydnellum peckii revealed the presence of an effective anticoagulant, named atromentin, similar in activity to the well-known anticoagulant heparin. In vivo, 1 mg of the ethanol extract was equivalent to 0.58 units of heparin. In vitro, 1 mg of purified atromentin was equivalent to 5.1 units of heparin and 2.3 mg of 70% ethanol extract (Khanna et al., 1965).
Atromentin was shown to inhibit the enoyl-acyl carrier protein (ACP) reductase (FabK) of Streptococcus pneumoniae with an IC50 of 0.24 µM (Zheng et al., 2006).