Brachylaena huillensis O.Hoffm. - syn. Brachylaena hutchinsii Hutch. - Asteraceae
muhuhu, silver oak
Tree up to 35m tall, native from tropcial East Africa to South Arfica; bark grey, with longitudinal cracks; leaves oblanceolate, up to 13cm long, grey felty beneath; flowers white or greenish yellow; male capitula shortly pedicellate, with about 12 flowers; female capitula subsessile, with about 5 flowers; fruit a small, winged achene in a white capitulum.
„Essential oil: Oil distilled from the wood has a pleasant, vetiver-like perfume.“
http://www.worldagroforestry.org/treedb2/speciesprofile.php?Spid=360 www.worldagroforestry.org. Retrieved 2018-10-17.
Main components of the essential oil from heartwood were β-caryophyllene (19.1%), α-cubebene (15.5%), cis-calamenene (10.5%), α-copaene (9.0%), δ-cadinene (8.5%), α-calacorene (6.0%), and α-ylangene (5.2%). A minor constituent was α-santalol (0.2%) e.g.
[Oliva, M. M., et al. „Essential oil of Brachylaena hutchinsii Hutch from Tanzania: Antimicrobial activity and composition.“ East and Central African Journal of Pharmaceutical Sciences 6.3 (2003): 61-63] https://www.ajol.info/index.php/ecajps/article/download/9702/14053
Brachylaena huillensis O. Hoffm. as Brachylaena hutchinsii Hutch.
Hooker, W.J., Hooker, J.D., Icones Plantarum [Hooker’s Icones plantarum], vol.30 t.2928 (1911) [M.Smith]