CITESwoodID: descriptions, illustrations, identification and information retrieval

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

Pterocarpus macrocarpus Willd. (Amboina)

Nomenclature. Family: FABACEAE-FABOIDEAE. Further trade and local names: Burma padouk, mai-pi-tawk (MM); maidu, pradoo (TH). Internal code: AMB.

CITES(EU) status of protection. Not protected.

Geographic distribution. Burma to Thailand, Laos, Vietnam, Cambodia.

Growth rings, colour, grain, etc. Growth ring boundaries distinct to indistinct or absent. Heartwood basically brown to red to purple (green heartwood pinkish, darkening to reddish brown); with streaks. Sapwood distinct from heartwood colour. Wood of medium weight to heavy and hard (± 0.80 g/cm³). Interlocked grain present.

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

Vessels (pores). Wood semi-ring-porous to diffuse-porous (depending on growth conditions the the wood is either semi-ringporous or diffuse porous); earlywood pore ring multiseriate. Vessels (pores) arranged in no specific pattern; in multiples; commonly in short (2–3 vessels) radial rows. Vessels medium, or large. Tyloses absent. Other deposits in heartwood vessels (pores) present (light yellowish brown), or absent (in case sapwood is mistaken for heartwood).

Axial parenchyma. Axial parenchyma present; banded. Parenchyma bands not (only) marginal; narrow; much wider than rays. Other macroscopically visible types of axial parenchyma: vasicentric, aliform, and confluent. Aliform parenchyma winged.

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

Storied structure. Storied structure present. Tiers regular (horizontal or slightly inclined).

Physical and chemical tests. Heartwood not fluorescent. Water extract not fluorescent; colourless to brown. Heartwood extractives leaching out when in contact with water (yellow). Ethanol extract fluorescent (lavender orange F orage-lilas); red. Splinter burns to full ash; colour of ash bright white.

Additional information. Informationsdienst Holz Merkblatt Nr. 66; 70. • amb.jpg. Pterocarpus macrocarpus (Amboina). Transverse section ca. 10x. Radial 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. delta-intkey.com’.

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