CITESwoodID: descriptions, illustrations, identification and information retrieval


H. G. Richter, K. Gembruch, G. Koch

Tectona grandis L. (Teak, Jati)

Nomenclature. Family: VERBENACEAE. Further trade and local names: Thailand-, Rangoon-Teak (DE); teck (FR, IT); kyun (MM); gia thi (VN); tadi, tek, sagwan (IN); djati (ID, MY); kembal, semarang (ID); may sak (LA, KH, TH); jat, sak (TH); teca (ES). Code according to DIN EN 13556: TEGR. Internal code: TEA.

CITES(EU) status of protection. Not protected.

Geographic distribution. India, Pakistan, Sri Lanka, Burma, Thailand, Laos, Vietnam, Cambodia, Indomalesia (planted worldwide in subtropical and tropical regions).

Growth rings, colour, grain, etc. Growth ring boundaries distinct. Heartwood basically brown (golden brown); with streaks, or without streaks. Sapwood distinct from heartwood colour. Odour distinct (like old rubber). Wood of medium weight (0,44–0,63–0,82 g/cm3). Surface oily. Interlocked grain absent.

Hardwood vs softwood. Vessels (pores) present (= hardwood).

Vessels (pores). Wood ring-porous to semi-ring-porous; earlywood pore ring uniseriate. Vessels (pores) in multiples; commonly in short (2–3 vessels) radial rows. Vessels large (140–270 µm); very few to few (4–6–9). Tyloses present, or absent (in case sapwood is mistaken for heartwood). Other deposits in heartwood vessels (pores) present (white and yellowish), or absent (in case sapwood is mistaken for heartwood).

Axial parenchyma. Axial parenchyma present; banded. Parenchyma bands exclusively marginal (or seemingly marginal); wide. Other macroscopically visible types of axial parenchyma: none.

Rays. Rays narrow. Large rays commonly less than 1 mm high.

Resin canals. Normal resin canals absent.

Physical and chemical tests. Heartwood not fluorescent. Water extract not fluorescent; yellow. Ethanol extract fluorescent (weakly yellowish); yellow. Splinter burns to partial ash; colour of ash white to grey.

Additional information. Informationsdienst Holz Merkblatt Nr. 42. • tea.jpg. Tectona grandis (Teak, Jati). Transverse section ca. 10x. Wood surface, natural size.

The interactive key allows access to the character list, illustrations, full and partial descriptions, diagnostic descriptions, differences and similarities between taxa, lists of taxa exhibiting specified attributes, summaries of attributes within groups of taxa, and geographical distribution.

Cite this publication as: ‘Richter, H.G., Gembruch, K., and Koch, G. 2014 onwards. CITESwoodID: descriptions, illustrations, identification, and information retrieval. In English, French, German, and Spanish. Version: 16th May 2014.’.