CITESwoodID: descriptions, illustrations, identification and information retrieval
Nomenclature. Family: FABACEAE-FABOIDEAE. Further trade and local names: Mai payung (TH); kran houng (KH); trac (VN). Code according to DIN EN 13556: none. Internal code: BPA.
CITES(EU) status of protection. Listed in Annex II(B). Similar woods: Dalbergia cambodiana, D. cultrata, D. dongnaiensis, D. fusca, D. latifolia, etc..
Geographic distribution. Burma, Thailand, Laos, Vietnam, Cambodia. Indochina (Cambodia, Laos, Thailand, Vietnam); Myanmar (= Burma).
Growth rings, colour, grain, etc. Growth ring boundaries indistinct or absent. Heartwood basically brown (leather to almost black brown); without streaks. Sapwood distinct from heartwood colour. Odour distinct (rather unpleasant). Wood heavy and hard (0.98–1.06). Interlocked grain present.
Hardwood vs softwood. Vessels (pores) present (= hardwood).
Vessels (pores). Wood diffuse-porous. Vessels (pores) in multiples; commonly in short (2–3 vessels) radial rows, or in radial rows of 4 or more. Vessels medium, or large; very few. Tyloses absent. Other deposits in heartwood vessels (pores) present, or absent (in case sapwood is mistaken for heartwood).
Axial parenchyma. Axial parenchyma present; banded. Parenchyma bands not (only) marginal; narrow; forming a reticulate pattern with rays. Parenchyma bands very fine, often discontinuous. Other macroscopically visible types of axial parenchyma: vasicentric, aliform. Aliform parenchyma of the lozenge type.
Rays. Rays narrow. Large rays commonly less than 1 mm high.
Storied structure. Storied structure present. Tiers regular (horizontal or slightly inclined), or irregular; 5–7 per axial millimetre.
Physical and chemical tests. Heartwood not fluorescent. Water extract fluorescent (light green); colourless to brown. Ethanol extract not fluorescent; colourless to brown (dark brown). Froth test positive. Splinter burns to full ash, or to partial ash; colour of ash white to grey, or yellow-brown (different specimens = variable ash colour).
Additional information. • bpa.jpg. Tangential 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’.