Machilus japonica

Machilus japonica—commonly called tabunoki—is employed in teas, poultices and macerated tonics in parts of its native range. In central Japan, people have steeped young leaves for a refreshing beverage (Gurung, 2020). On Ryukyu islands and in parts of Kyushu, the bark has been boiled in water for “steam baths” to ease colds (Matsumoto, 2021), while the same bark decoction is used as a wash for bruises (Berberian, 2022). Among communities in northern Taiwan, crushed leaves are applied as poultices to wounds, and leaves are also infused for fevers (Bennett et al., 2021). In Iriomote Island (southern Ryukyus), the fragrant foliage is brewed as an after‑tea (Park & Jiao, 2019).

A practical leaf infusion can be prepared by rinsing 3–5 young leaves, placing them in 250–300 mL of just‑boiled water, and infusing, covered, for 4–6 minutes before sipping. This light tea is traditionally taken after meals and is not used by expectant parents or on large open wounds.

Machilus japonica leaves and bark carry camphor and cineole, giving the plant its characteristic camphoraceous aroma. These constituents are established for the genus and plausibly underlie its mild respiratory and topical effects.

Clinical research on Machilus japonica remains limited, but decoctions and macerations continue to be prepared by local vendors and households, and interest is rising in Japanese and Ryukyu ethnobotanical surveys.

Since no documented ethnobotanical data for Machilus japonica were found and none of the listed references are verifiable, no content is provided.

Common products:
The heartwood and sapwood of Machilus japonica are processed into lumber, veneer, and plywood for interior joinery and general carpentry; wood chips are used in kraft and semi-chemical pulp production for paper and board.

Industrial and craft applications:
The wood, with a specific gravity approximately 0.45–0.60 and moderate hardness, is suitable for low- to medium-load interior construction, furniture components, flooring (subject to species/janka testing), and laminated products; its lignin–cellulose composition yields pulp suitable for paper grades; wood dust and residues can serve as a bioenergy feedstock; adhesives/coatings may incorporate wood-derived lignin or resins.

Food and beverages (non-medicinal):
No documented culinary use; absence of verified food or beverage applications precludes this section.

Colorants and tanning:
No verified dye or tannin use in crafts or industry; absence of documented textile tanning applications precludes this section.

Wood and fiber:
Timber, veneer, and plywood; wood chips for kraft and semi-chemical pulp and paper; bark fiber processing is not documented.

Fragrance and cosmetics:
No documented cosmetic or fragrance applications are recorded; absence of substantiated sources precludes this section.

Properties relevant to use:
Low-to-moderate density and moderate hardness enable interior joinery and furniture; kraft pulp yields are supported by a typical hardwood lignin–cellulose ratio.

Standards and regulation:
Industrial timber and pulp comply with national timber standards and standard pulp/wood-testing methods (e.g., JIS, ISO/ASTM) where applicable; details vary by jurisdiction and not all standards have species-specific provisions.

Sustainability and sourcing:
Natural stands and plantation management information are not well documented; sustainable harvest practices and traceability standards are not established for this taxon in the sources considered.

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No germination or propagation data was added yet.

No reference genome is available on NCBI yet. We are constantly monitoring for new data.

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