United States / Grow / Three Kings Titoki

Three Kings Titoki (Alectryon excelsus)
Photo: (c) Jon Sullivan, some rights reserved (CC BY) (CC BY), via iNaturalist. Species-typical, not necessarily this cultivar.

Three Kings Titoki

Alectryon excelsus · Sapindaceae · all Alectryon records · also called New Zealand ash, Tītoki · Wikipedia

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Alectryon excelsus carries an avoid recommendation in the evidence table. The source pack remains limited evidence, with that boundary documented separately in the cited rows.

Its experimental lineage is a 60-species shoot comparison, quantitatively assessing flammability across tree and shrub species. The study's role is retained without treating its title as the recommendation source.

Same-form alternatives are available under related plants. They provide comparison choices while leaving the avoid conclusion, limited pack, and shoot assessment attached to this individual species record. Each link remains tied to this accepted source pack.

Fire-resistant trees instead

Form
tree
Region
New Zealand
Rated in
Global; New Zealand
On this lot

1. Fire evidence and conditions

Fire evidence
Highly flammable — location does not change the cited classification.
Evidence regions
Global; New Zealand

2. Why this plant is relevant here

3. Legal, ecological, and broader status

How to read this page

The status above is computed from the cited rows below: independent recommendations can support a fire-resistant result, an avoid row can produce keep-away, and disagreement stays visible as conflict. Placement notes preserve each source’s own scheme rather than translating unlike rules into one scale. This is evidence about a plant, not permission to plant it in every part of the defensible space; Zone 0 remains noncombustible.

The evidence

Grouped by what each source concluded. Primary evidence rated the plant itself (a lab, field program, or original curation); corroboration compiled or republished another source's rating and resolves to its root lineage.

Avoids (1)

Mid-scale / conditional (1)

Listed without a rating (14)
Corroboration (14 rows from 1 source)
  • FLAMITS: FLAMmability plant traiTS database — Dryad / Global Ecology and Biogeography · Dryad version 9 · original source Corroboration Trait database lineage: meta-aggregator

    14 cited rows from this source; its identity, lineage and tier are stated once.

    • Primary study Cui2020a: Cui, X., Paterson, A. M., Wyse, S. V., Alam, M. A., Maurin, K. J. L., Pieper, R., ... Curran, T. J. (2020a). Shoot flammability of vascular plants is phylogenetically conserved and related to habitat fire-proneness and growth form. Nature Plants, 6, 355-359.

      Shared row context: plant part branches; fuel all; predrying yes; device grill; site Cui2020a-1; sampling ND.

      • “ignition frequency (%): 100”

        FLAMITS record 1330; Ignitability measurement.

      • “maximum sample temperature (°C): 551.9”

        FLAMITS record 1524; Combustibility measurement.

      • “burning duration (s): 21.9”

        FLAMITS record 1718; Sustainability measurement.

      • “estimated burnt biomass (%): 63.8”

        FLAMITS record 1912; Consumability measurement.

    • Primary study Mason2016: Mason, N. W. H., Frazao, C., Buxton, R. P., & Richardson, S. J. (2016). Fire form and function: evidence for exaptive flammability in the New Zealand flora. Plant Ecology, 217, 645-659.

      Shared row context: plant part leaves; fuel live; predrying yes; device muffle furnace; site Mason2016-7; sampling summer.

      • Shared measurement context: Ignitability measurement.

        • “temperature at smoke (°C): 76.64”

          FLAMITS record 8309.

        • “temperature at smoke (°C): 89.94”

          FLAMITS record 8310.

        • “temperature at flaming (°C): 315.42”

          FLAMITS record 8524.

        • “temperature at flaming (°C): 163.66”

          FLAMITS record 8525.

      • Shared measurement context: Combustibility measurement.

        • “temperature increase rate (°C/s): 8.63”

          FLAMITS record 8739.

        • “temperature increase rate (°C/s): 15”

          FLAMITS record 8740.

    • Primary study Wyse2016: Wyse, S. V., Perry, G. L. W., O'Connell, D. M., Holland, P. S., Wright, M. J., Hosted, C. L., ... Curran, T. J. (2016). A quantitative assessment of shoot flammability for 60 tree and shrub species supports rankings based on expert opinion. International Journal of Wildland Fire, 25, 466-477.

      Shared row context: plant part branches; fuel all; predrying yes; device grill; site Wyse2016-1; sampling ND.

      • “ignition frequency (%): 100”

        FLAMITS record 14321; Ignitability measurement.

      • “maximum sample temperature (°C): 551.9”

        FLAMITS record 14381; Combustibility measurement.

      • “burning duration (s): 21.9”

        FLAMITS record 14441; Sustainability measurement.

      • “estimated burnt biomass (%): 63.8”

        FLAMITS record 14501; Consumability measurement.

Fire-resistant trees instead

Fire-resistant trees listed above

Last verified 2026-08-23. JSON (CC BY 4.0)

Profiles: GBIF · iNaturalist · Wikidata · Wikipedia · ITIS

Alectryon excelsus (New Zealand ash, Tītoki). FireApproved. https://fireapproved.com/plants/alectryon-excelsus/. Last verified 2026-08-23.