earthstar

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earth·star

 (ûrth′stär′)
n.
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.

earthstar

(ˈɜːθˌstɑː)
n
(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

earth•star

(ˈɜrθˌstɑr)

n.
a fungus of the genus Geaster, having an outer covering that splits into the form of a star.
[1810–20]
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: an account of the British gasteroid fungi.
New sources of taxonomic information for earthstars
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.