Kauaʻi Conservation Atlas

Kauaʻi record · KCA-FUNGI-000090

Earthstar

Geastrum berkeleyi

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Atlas primary ecological plate of Earthstar (Geastrum berkeleyi).
Atlas primary ecological plate of Earthstar (Geastrum berkeleyi). · Kauaʻi Conservation Atlas · Kauaʻi Conservation Atlas ecological plate · Atlas primary ecological plate v1.5.1 · Image source

About Earthstar

Earthstar is a Hawaiian checklist record retained for Kauaʻi review. Role: Saprotroph, symbiont, mycorrhizal associate, decomposer or pathogen depending on species; role requires local evidence. Associated habitat or substrate: Substrate and microhabitat vary by species; may include soil, grassland, leaf litter, decomposing wood, dung, bark or living host tissue.

Kauaʻi evidence

MycoPortal Hawaiian Islands macrofungi checklist includes this taxon.

Names and classification

Scientific name
Geastrum berkeleyi
Common names
Earthstar
Family
Geastraceae
Order
Geastrales
Record type
species

Kauaʻi occurrence and status

Kauaʻi occurrence
Hawaiian Islands macrofungi checklist; Kauaʻi occurrence requires local voucher, specialist confirmation, or survey record
Origin
Hawaiian Islands macrofungi checklist
Conservation status
Under-documented fungal biodiversity
Evidence date
2026-09-13
Evidence limits
Occurrence strength is explicit; statewide/Hawaiian checklist evidence is not treated as a precise Kauaʻi site record.

Habitat and ecology

Habitats
Substrate and microhabitat vary by species; may include soil, grassland, leaf litter, decomposing wood, dung, bark or living host tissue
Ecological role
Saprotroph, symbiont, mycorrhizal associate, decomposer or pathogen depending on species; role requires local evidence
Food and resource needs
Saprotroph, symbiont, mycorrhizal associate, decomposer or pathogen depending on species; role requires local evidence
Reproduction
Spore production or clonal/mycelial growth; source-specific details vary
Shelter
Substrate/host not resolved at Kauaʻi scale
Substrate
Substrate/host not resolved at Kauaʻi scale

Threats and conservation

Threats
Under-documented; collection, habitat change, drying, substrate loss, and misidentification are key concerns
Conservation actions
Retain observations with provenance; protect sensitive sites; support specialist review; apply disease hygiene and management protocols when relevant
Monitoring
Record substrate, host, microhabitat, date, rainfall/moisture, visible morphology, photos, specimen/voucher status, DNA status, and attendant biota
Data gaps
Kauaʻi voucher status, precise taxonomic confirmation, microhabitat, host/substrate specificity, abundance, and seasonal pattern need expansion.

Process and seasonal context

Seasonal timing
Often moisture- and substrate-dependent; Kauaʻi timing requires repeated observation
Seasonal description
Earthstar is a Hawaiian checklist record retained for Kauaʻi review. Role: Saprotroph, symbiont, mycorrhizal associate, decomposer or pathogen depending on species; role requires local evidence. Associated habitat or substrate: Substrate and microhabitat vary by species; may include soil, grassland, leaf litter, decomposing wood, dung, bark or living host tissue.

Sources and further reading

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