Flindersia brayleyana. Family: Rutaceae
- Medium-sized tree.
- Grows to 40m high and 2.5m stem diameter.
- Trunk is usually well formed, circular in cross-section and not buttressed.
- Bark is about 12mm thick, and grey to brown.
- Bark has distinct longitudinal fissures; in older trees, these fissures are not so marked owing to scaliness.
- Restricted to northern Queensland rainforests between Townsville and the Windsor Tableland.
- Heartwood is pink to brownish pink.
- Sapwood is a narrow band of white to pale grey.
- Partly interlocked, and often wavy or curly.
- Texture is medium and uniform.
- Quarter-sawn boards may show various figures (patterns) such as waterwave, rib and birdseye.
- Furniture, plywood, shop and office fixtures.
- Joinery, turnery, carving, inlay work, picture frames.
- Light boat building (planking, decking, sawn frames, stringers, chines, gunwales), marine plywood.
- Historical use for aeroplane propellers, coach, vehicle and carriage building, draughtsman´s implements, gunstocks, musical instruments (piano parts, guitar necks, backs, sides and headstock) and walking sticks.
- General building framing in the early 1900s, and more commonly in flooring, lining mouldings and joinery, but this use has been very infrequent for decades.
- Density: 575kg/m3 at 12% moisture content; about 1.7m3 of seasoned sawn timber per tonne.
- Strength groups: (S6) unseasoned, SD6 seasoned.
- Stress grades: F4, F5, F7, F8 (unseasoned); F7, F8, F11, F14 (seasoned) when visually stress-graded according to AS 2082—2000: Timber—Hardwood—Visually stress-graded for structural purposes.
- Joint groups: J4 unseasoned, JD4 seasoned.
- Shrinkage to 12% MC: 7.2% (tangential), 2.9% (radial).
- Unit shrinkage: 0.25% (tangential), 0.15% (radial)—these values apply to timber reconditioned after seasoning.
- Durability above-ground: Class 4 (life expectancy less than 7 years).
- Durability in-ground: Class 4 (life expectancy less than 5 years).
- Lyctine susceptibility: sapwood is not susceptible to lyctid borer attack.
- Termite resistance: not resistant.
- Preservation: sapwood readily impregnates with preservative but the heartwood can’t be adequately treated using available commercial processes.
- Seasoning: satisfactorily dries using conventional air and kiln seasoning.
- Hardness: firm (rated 4 on a 6-class scale) to indent and work with hand tools.
- Machining: machines, and turns well, to a smooth surface.
- Fixing: no difficulty using standard fittings and fastenings.
- Gluing: satisfactorily bonds using standard procedures.
- Finishing: readily accepts stain, polish and paint.
- Sapwood: white to pale grey.
- Heartwood: pink to brownish pink with lustrous sheen.
- Texture: medium and uniform; grain highly variable, sometimes with interlocked fibres; wavy or curly and occasionally more disturbed producing fiddleback or birdseye.
- Growth rings: absent.
- Vessels: small to medium, uniformly distributed, mainly solitary but with some in short radial rows of up to 4; simple perforation plates can be seen with a lens; deposits of extraneous (external) material present in some vessels.
- Parenchyma (soft tissue): not visible under a lens.
- Rays: visible without a lens and prominent on radial surfaces.
- Ripple marks: absent.
- Intercellular canals: present in some samples.
- Burning splinter test: burns to a white-buff, full ash.
- Birdseye: areas of dark-coloured soft tissue, causing dressed surfaces to appear dimpled; due to an insect (restricted to this species) attacking the living tree—not particularly common in wood marketed for furniture or high-value decorative uses, but the feature is useful for distinguishing wood of F. brayleyana from otherwise very similar wood of F. pimenteliana (maple silkwood).
Research and resources
- Boland, DJ, Brooker, MIH, Chippendale, GM, Hall, N, Hyland, BPM, Johnston, RD, Kleinig, DA and Turner, JD 2006, Forest trees of Australia, 5th ed., CSIRO Publishing, Collingwood, Australia.
- Bootle, K 2005, Wood in Australia: Types, properties and uses, 2nd ed., McGraw-Hill, Sydney.
- Ilic, J 1991, CSIRO atlas of hardwoods, Crawford House Press, Bathurst, Australia.
- Queensland Government, DAF 2018, Construction timbers in Queensland: Properties and specifications for satisfactory performance of construction timbers in Queensland. Class 1 and Class 10 buildings, Books 1 & 2, Department of Agriculture and Fisheries, Brisbane.
- Standards Australia, 2000, AS 2082—2000: Timber—Hardwood—Visually stress-graded for structural purposes, Standards Australia International, Strathpine, NSW.
- Last reviewed: 12 Dec 2018
- Last updated: 12 Dec 2018