Kauaʻi record · KCA-FUNGI-000003
Root-rot / honey fungus
Armillaria gallica
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About Root-rot / honey fungus
Root-rot / honey fungus is documented for Kauaʻi or tied to local survey work. Role: Root-rot pathogen and wood decomposer. Associated habitat or substrate: Roots, wood and forest soil associated with susceptible trees.
Kauaʻi evidence
USFS/Plant Disease record reports Armillaria gallica on koa and ʻōhiʻa on Kauaʻi.
Names and classification
- Scientific name
- Armillaria gallica
- Common names
- Root-rot / honey fungus
- Family
- Physalacriaceae
- Order
- Agaricales
- Record type
- species
Kauaʻi occurrence and status
- Kauaʻi occurrence
- Documented on Kauaʻi on koa and ʻōhiʻa
- Origin
- Status not resolved
- Conservation status
- Forest disease concern
- 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
- Roots, wood and forest soil associated with susceptible trees
- Ecological role
- Root-rot pathogen and wood decomposer
- Food and resource needs
- Root-rot pathogen and wood decomposer
- Reproduction
- Spore production or clonal/mycelial growth; source-specific details vary
- Shelter
- Acacia koa and Metrosideros polymorpha reported in source
- Substrate
- Acacia koa and Metrosideros polymorpha reported in source
Threats and conservation
- Threats
- Potential native-tree health and restoration concern
- 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
- Root-rot / honey fungus is documented for Kauaʻi or tied to local survey work. Role: Root-rot pathogen and wood decomposer. Associated habitat or substrate: Roots, wood and forest soil associated with susceptible trees.