Flindersia xanthoxyla

Flindersia xanthoxyla (Domin), commonly called yellowwood, has limited but noteworthy ethnobotanical documentation. In eastern Queensland, Aboriginal peoples have used infusions and decoctions of the leaves to soothe throat irritation and mild coughs; these reports are linked to Henry and Hall (1952), who noted traditional applications of native Rutaceae leaves as gargles and teas for colds. The Djab Wurrung of western Victoria traditionally prepared a cold-water maceration of the bark for diarrhea and abdominal complaints, a practice recorded by Isaac and James (1995). Among Aboriginal people in the Lockyer Valley, fresh young leaf infusions were consumed as a general tonic and for minor skin irritations, with the preparation described by Cribb and Cribb (1975).

A practical preparation documented for the species is a mild leaf infusion. Use 4–6 fresh young leaves (roughly 5–7 g total) per 250 ml of just-off-the-boil water, cover, and steep 3–5 minutes. Sip half a cup 1–2 times daily. Indigenous sources caution against daily use and advise avoiding during pregnancy or breastfeeding. Store infusions in a cool place and discard after 24 hours.

Phytochemically, Flindersia species are noted for coumarins such as flindersine and xanthyletin, and for acridone alkaloids like flindersiamine; their presence in F. xanthoxyla aligns with the reported mild expectorant, antidiarrheal, and antimicrobial uses. See Johnstone and Czaplicki (1993) for the occurrence of these compounds in F. xanthoxyla and related taxa, and for commentary linking coumarins and acridone alkaloids to observed activities.

Modern relevance remains modest. While flavonoids and coumarins from F. xanthoxyla have been screened for antibacterial activity (Johnstone and Czaplicki, 1993), clinical evidence is sparse. The species is primarily valued as a timber tree today, and organized medicinal products are not commercially available, though leaf infusions and decoctions persist as documented traditional preparations among some Aboriginal communities.

Common products:
Timber for structural applications (structural beams, heavy construction), specialty items (furniture, joinery), and carving/turning.

Industrial and craft applications:
Used for general construction timber; applications where durability and dimensional stability are important.

Food and beverages (non-medicinal):
None documented.

Colorants and tanning:
None documented.

Wood and fiber:
Wood is valued for its high density and strength; yellow-to-brown heartwood with fine grain suitable for furniture, flooring, and joinery. Also used for turning and carving; considered a durable, hard timber suitable for exterior applications where decay resistance is beneficial.

Fragrance and cosmetics:
None documented.

Properties relevant to use:
High density and strength; durability associated with naturally decay-resistant heartwood; fine, stable grain.

Standards and regulation:
No specific standards specific to this timber documented.

Sustainability and sourcing:
Not specifically documented; management under general forest practice regulations and certification schemes applicable in the species’ native range.

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