Alangium Lam. sect. Conostigma Bloemb. is largely confined to the Malesian area and contains 19 species. By using the characters as found in the original species-descriptions, and with emphasizing the nature of the indument of the leaf bud, the confusingly variable Alangium javanicum s.l.-complex could be dismantled for a great part. Four new species: A. ledermannii, A. pallens, A. plumbeum, and A. subcordatum, and two new varieties: A. meyeri var. macilentum and A. ebenaceum var. insignis are recognised. Two taxa are raised to specific status: A. nobile subsp. denudatum to A. denudatum and A. javanicum var. minahassicum to A. minahassicum. A key to the species is presented, and the concerned taxa are enumerated, referenced, described and some are figured.

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Keywords Alangiaceae, Alangium sect. Conostigma, Malesia, new species, taxonomy
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Journal Blumea: Biodiversity, Evolution and Biogeography of Plants

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de Wilde, W. J. J. O., & Duyfjes, B.E.E. (2017). Taxonomy of Alangium section Conostigma (Alangiaceae). Blumea: Biodiversity, Evolution and Biogeography of Plants, 62, 29–46. doi:10.3767/000651917X695164