Teijsmanniodendron coriaceum (C.B.Clarke) Kosterm.

IUCN Red List of Threatened Species https://www.iucnredlist.org/species/139799507/139810221

Conservation

LC - least concern

de Kok, R.P.J., Rusea, G. & Latiff, A. 2009. The genus Teijsmanniodendron Koord. (Lamiaceae). Kew Bulletin 64: 587. DOI: https://doi.org/10.1007/s12225-009-9156-9

Note

Synonym: Vitex venosa H. J. Lam in H. J. Lam & Bakhuizen van den Brink (1921: 61); Kostermans (1951: 80). Type: Indonesia, Sumatra, Palembang, Banjuasin and Kubu countries, 24 Dec. 1915, Grashoff 890 (syntypes BO!, photos K, L!).

Morphology General Habit

Tree 4 – 30 m tall, bole 8 – 20 m high, DBH 6 – 100 cm

Morphology General Bark

Bark smooth, slightly scaly to fissured, grey to pale-brown or brown; slash dull-blackish or pale brown; sapwood orange-ochre

Morphology Twigs

Twigs glabrous, without a ridge between the opposite petioles. Leaves 3 (– 4)-foliolate; leaflets oblanceolate, 5 – 18 (– 20) × (2 –) 3 – 5 (– 7) cm, apex acute to obtuse, base acute, base of lateral leaflets sometimes oblique, margin strongly recurved, coriaceous, not too strongly bullate, not shiny above when dried, glabrous on both surfaces, sometimes hairy beneath in young leaflets; midrib prominent and raised beneath; lateral veins 5 – 8 pairs, curving and joined near margin to form an imperfect intramaginal vein, conspicuous above, prominent and raised beneath; intercostal veins reticulate, distinct and raised beneath

Morphology Leaves Petiole

Petioles 2 – 5 cm long, glabrous to slightly hairy, subterete in cross-section

Morphology Reproductive morphology Inflorescences

Inflorescences 4 – 15 cm long, slightly pubescent; bracteoles linear to oblong, 0.2 – 0.4 cm long, persistent, pubescent

Morphology Reproductive morphology Flowers Calyx

Flowering calyx broadly infundibular, c- 1.5 cm long, sparsely pubescent; lobes 1 – 0.5 mm long, apex acute to obtuse; fruiting calyx enlarged, shallowly cupuliform, margin entire

Morphology Reproductive morphology Flowers Corolla

Corolla pubescent, white, violet to dark-violet, slightly fragrant; central lobe of lower lip spathulate, 4.5 – 5 × 3.5 – 4 mm, apex round, throat villous inside, violet with a yellow patch at base; side lobes of lower lip c- 2 × 1.5 mm, apex round; lobes of upper lip c- 1.5 × 2 mm, apex round to acute; tube 5 – 6 mm long. Stamens 4, 4 – 5 mm long, distinctly didynamous, exserted, inserted in the lower part of the corolla tube, sparsely pubescent; anthers globose

Morphology Reproductive morphology Flowers Gynoecium Ovary

Ovary glabrous, cream-coloured; styles purple, long-exserted; stigmas pale-purple. Fruits ellipsoid, 1 – 1.5 × 0.5 – 0.8 cm, apex truncated, leathery, striate, glabrous, deep blue or black; pericarp thin

Morphology Reproductive morphology Seeds

Seedlings see Ng (1992).

Distribution

From Peninsular Thailand south to Sumatra and Borneo.

Ecology

Found growing in primary or secondary forests on sand, sandy clay or clay, sometimes over sandstone or granite soils; 100 – 1200 m.

Conservation

Least concern (LC).

Phenology

Flowering from July to December; fruiting from March to April.

Vernacular

Peninsular Thailand: Kaza (Malay language); Peninsular Malaysia: Meroyan Batu (Malay language). Sarawak: Entabuluh (Iban language) or Madang. Indonesia, Kalimantan: Mahuwi Kuning or Ma-uhi Putih (Samarinda), Kaju Gading, Kaju Krasak (Dayak language).