Peziza petersii

Peziza petersii Berk. syn. Galactinia sarrazinii Boud. (illustrated 60% life size) Cup 3–5cm across, cup-shaped, often clustered, sessile; inner surface reddish-brown, dark grey at centre, outer reddish-brown at margin, dark grey towards base, scurfy. Flesh greyish; thin. Spores 10–12×5.5–6¼, finely warted, containing 2 oil drops. Asci 200×10¼, blued at the tip by iodine. Habitat on burnt wood and soil, often on fire sites; early summer to autumn. Uncommon. Not edible.