earthstar

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earthstar

[′ərth‚stär]
(mycology)
A fungus of the genus Geastrum that resembles a puffball with a double peridium, the outer layer of which splits into the shape of a star.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
New sources of taxonomic information for earthstars (Geastrum, Geastraceae, Basidiomycota): phenoloxidases and rhizomorph crystals.
Geastrum hirsutum: a new earthstar fungus with a hairy exoperidium.
Geastrum rusticum (Geastraceae, Basidiomycota), a new earthstar fungus in the Brazilian Atlantic rainforest--a molecular analysis.
Earthstars, however, hold a surprise: As they mature, the outer layer peels back in four to 14.
As out of this world as it seems, though, the UFO you've spotted has a distinctly terrestrial identity: It's an earthstar, a relative of the puffball family: