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Arched Earthstar

Geastrum fornicatum

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Appears in
Mushrooms

By Roger Phillips

Published 2006

  • About

Arched Earthstar Geastrum fornicatum (Huds.) Hook. (illustrated 50% life size) Fruit body borne on a short stalk, splitting into 4 tall, narrow, downward-pointing rays, which stand on the tips a cup-like structure at the base of the fungus formed by 4 similar but shorter, broader, upward-pointing rays. Spore sac 1–1.5cm across, globose, with fringed apical pore; brownish. Spores 3.5–4.5ΒΌ in diameter, globose, warted. Spore mass blackish-brown. Habitat deciduous woods; autumn. Uncommon, vulnerable on Red Data List. Not edible.

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