Teijsmanniodendron Koord.

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

Ecology

Teijsmanniodendron is found growing in various kinds of vegetation from the landward edge of mangroves to submontane forest, but most species are found in primary or secondary lowland rainforest. In primary lowland rainforest they tend to be more common in areas with slightly more disturbance such as on ridges or near streams.

Morphology General Bark

Bark smooth to somewhat scaly or flaky

Morphology General Habit

Trees up to 50 m tall, DBH up to 120 cm, with or without buttresses

Morphology Leaves

Leaves with petioles thickened or swollen at both ends; decussate, simple or palmately compound with 3 – 7 leaflets, when compound middle leaflets largest, others gradually smaller, margin entire

Morphology Reproductive morphology Fruits

Fruits drupaceous, dry, the exocarp either thick with scattered sclerenchymatic cells or thin and very brittle

Morphology Reproductive morphology Inflorescences

Inflorescences paniculate with trichotomous cymes, terminal or axillary; bracts leaf-like; bracteoles ovate, lanceolate to linear, usually < 1 mm; calyx persistent, usually enlarged in fruit, 5-lobed; corolla (4 –) 5-lobed, 2-lipped, upper lip (1 –) 2-lobed, lower lip 3-lobed, middle lobe the largest, the throat villous inside, shortly tubular; stamens 4 (− 5), distinctly didynamous, exserted, inserted in the middle or lower part of the corolla tube; anthers biloculed, dorsifixed, dehiscing by long slits; style terminal, slender, with bifid stigma; ovary imperfectly 2-celled, each cell 2-ovuled; only one ovule developing, the other 3 are suppressed; ovules hemianatropous, attached laterally near the apex of the ovary cells

Morphology Reproductive morphology Seeds

Seeds one, pendulous, oblong, with membranous testa Seedling with epigeal germination; cotyledons emergent, leafy; hypocotyl elongated.

Morphology Twigs

Twigs usually terete to tetragonal, glabrous to variously pubescent

Note

Synonym: Xerocarpa H. J. Lam (1919: 98). Type species: Xerocarpa avicenniaefoliola H. J. Lam (1919: 99) = Teijsmanniodendron ahernianum (Merr.) Bakh. Most species seem not to be very common and consequently the numbers of collections are low given their extensive distribution. This contrasts with the closely related genus Vitex, with which it shares many ecological characteristics and which is relatively well represented in collections.

Type

Teijsmanniodendron bogoriense Koord.