Hello all,
I’m currently working in the Mount Isa Inlier/Northwest Highlands region of Queensland. I’ve been curious whether the local Acacia species, have ever been investigated for their alkaloid content.
To be clear: I have no intention of smoking or ingesting any extracts. Past experiences have left me with anxiety, and I feel that I’ve either overstayed my welcome in that space or that it no longer serves me. My interest is only in the botanical and chemical side — mapping, identifying, and possibly doing preliminary reagent/TLC tests on local species.
From herbarium and WetlandInfo records, the Acacia species present in this bioregion include:
- Acacia acradenia
- Acacia adsurgens
- Acacia alleniana
- Acacia ancistrocarpa
- Acacia aneura var. aneura (Mulga)* — mentioned on Nexus, but reports are inconsistent; no confirmed alkaloid results.
- Acacia argyraea
- Acacia asperulacea
- Acacia bivenosa
- Acacia calligera
- Acacia cambagei (Gidgee) — contains fluoroacetates, toxic, avoided
- Acacia chippendalei
- Acacia chisholmii
- Acacia citriodora
- Acacia colei / var. colei (Cole’s wattle)* mentions from Dr Karl.
- Acacia cowleana
- Acacia cowleana × hammondii
- Acacia delicatula
- Acacia drepanocarpa subsp. drepanocarpa
- Acacia drepanocarpa subsp. latifolia
- Acacia elachantha
- Acacia estrophiolata (Ironwood)
- Acacia excelsa subsp. angusta
- Acacia galioides
- Acacia georginae (Georgina gidgee) — fluoroacetates, highly toxic, avoided
- Acacia gonoclada
- Acacia hammondii
- Acacia hemignosta
- Acacia hemsleyi
- Acacia hilliana
- Acacia holosericea (Silky wattle)* — noted mainly for traditional food use, not strong alkaloid presence.
- Acacia hyalinaura
- Acacia laccata
- Acacia latifolia
- Acacia ligulata (Sandhill wattle)* — previously mentioned; usually in food context, little chemical data.
- Acacia limbata
- Acacia lysiphloia
- Acacia megalantha
- Acacia melleodora
- Acacia monticola / × phlebocarpa
- Acacia orthocarpa
- Acacia phlebocarpa
- Acacia platycarpa
- Acacia plectocarpa subsp. tanumbirinensis
- Acacia retivenea / subsp. retivenea
- Acacia sericophylla
- Acacia shirleyi (Lancewood)
- Acacia sp. (Urandangi L.Pedley 2025)
- Acacia spondylophylla
- Acacia stipuligera
- Acacia tenuissima
- Acacia thomsonii
- Acacia torulosa
- Acacia tropica
- Acacia umbellata
- Acacia victoriae subsp. fasicaria* — discussed on Nexus; bushfood seeds well known, little mention of alkaloids.
- Acacia victoriae subsp. victoriae* — as above.
I understand that some of these trees, especially the gidgees (A. cambagei, A. georginae), are known for their toxicity due to fluoroacetates. Because of this I feel it’s best to avoid those species altogether, regardless of curiosity. My interest would only be in the non-toxic species.
I was wondering if others here think it would be worthwhile to collect small samples (say ~50 g dried phyllodes, twigs or bark) for extraction and reagent/TLC testing, and adding results here over time as I locate and identify each species. If so, what species would anyone recommend I look at first?
I’m approaching this with respect for the plants, for science, and for the community ethos of responsible exploration. Any guidance on methodology, record-keeping, or prior research in this specific bioregion would be greatly appreciated.
Thanks in advance,