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Any of various mushrooms of the family Geastraceae, having a round spore case like that of a puffball with an outer covering that splits open in a starlike form.


(Plants) any of various basidiomycetous saprotrophic woodland fungi of the genus Geastrum, whose brown onion-shaped reproductive body splits into a star shape to release the spores



a fungus of the genus Geaster, having an outer covering that splits into the form of a star.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.earthstar - any fungus of the family Geastraceaeearthstar - any fungus of the family Geastraceae; in form suggesting a puffball whose outer peridium splits into the shape of a star
fungus - an organism of the kingdom Fungi lacking chlorophyll and feeding on organic matter; ranging from unicellular or multicellular organisms to spore-bearing syncytia
family Geastraceae, Geastraceae - a family of earthstar fungi belonging to the order Lycoperdales
Geastrum coronatum - an earthstar with a bluish spore sac and a purplish brown gleba; at maturity the outer layer splits into rays that bend backward and elevate the spore sac
Astreus pteridis - the largest earthstar; the fruiting body can measure 15 cm across when the rays are expanded
Astreus hygrometricus - a common species of earthstar widely distributed in sandy soil; the gleba is a pale tan
References in periodicals archive ?
British puffballs earthstars and stinkhorns Royal Botanic Gardens KewPyasi A.
I would suggest there's still work to be done to positively identify the "earth-star" in the poem; the daisy is far more likely than the fungus, as the latter closes in hot, dry conditions, not at night like the earthstars do in the second stanza.
Earthstars and puffballs are classified as "stomach fungi," because their spores are enclosed in a round sac.