Eucalyptus radiata Sieber ex DC.  - Myrtaceae - narrow-leaf peppermint gum, narrow-leaved peppermint, **Schmalblättriger Pfefferminz-Eukalyptus**

Tree, up to 45m high, native to Australia, cultivated elsewhere (South Africa); bark shortly fibrous ("peppermint"), grey to grey-brown, shedding in long ribbons; young leaves sessile, opposite, broad lanceolate or lanceolate, green; adult leaves alternate, petiolate, lanceolate to narrow lanceolate, olive green;

Eucalyptus radiata Sieber ex DC subsp. radiata = Eucalyptus radiata subsp. robertsonii. = Eucalyptus phellandra R.T.Baker & H.G.Sm. \\
Forth river peppermint, Robertson's peppermint 
[[http://dpipwe.tas.gov.au/Documents/Eucalyptus-radiata-subsp-radiata-notesheet.pdf]] see also [[http://www.worldfloraonline.org/taxon/wfo-0000955615]] 

Phellandrene was named after and was isolated for the first time from Eucalyptus phellandra essential oil which may contain up to 40% of α-phellandrene and up to 50% of 1.8-cineole (eucalyptol). \\
[Bournot, Konrad. "Neuere Forschungsergebnisse auf dem Gebiete der ätherischen Öle, insbesondere während der Jahre 1930 bis Ende 1932." Archiv der Pharmazie 272.1‐4 (1934): 23-37]

Main components of the essential oil extracted from leaves of Eucalyptus radiata were 1.8-cineole (69.5%), α-pinene (11.9%), trans-pinocarveol (4.8%), β-selinene (2.6%), p-cymene (1.9%), and pinocarvone (1.3%). \\
[Bendaoud, Houcine, et al. "GC/MS analysis and antimicrobial and antioxidant activities of essential oil of Eucalyptus radiata." Journal of the Science of Food and Agriculture 89.8 (2009): 1292-1297]

|{{:alpha_phellandrene.jpg| α-phellandrene }} \\ α-phellandrene|{{1.8cineole.jpg| 1.8-cineole}} \\ 1.8-cineole |{{:terpineol_alpha.jpg| α-terpineol}} \\ α-terpineol | {{:limonene.jpg| limonene }} \\ limonene |{{:alpha_pinene.jpg| α-pinene}} \\ α-pinene |

26 compounds have been identified in 23 E.radiata leaf essential oil samples from South Africa (yield 0.14-4.31%). The highest essential oil yields can be obtained during spring/summer months (high rainfall and high temperature conditions) from mature leaves. Major compounds were 1,8-cineole (65.7% ± 9.5), α-terpineol (12.8% ± 4.4) and limonene (6.5% ± 2.4). \\
Literature shows that 1,8-cineole (69.5-82.6%) was also major component in E.radiata oils from Australia, India, Zambia, Germany, and Tunisia. Minor components were α-terpineol (7.0-12.4%), α-pinene (0-11.9%), and limonene (0-7.3%). \\
[Mahumane, Gillian Dumsile. Antimicrobial activity and chemical analysis of eucalyptus radiata leaf essential oil. Diss. 2016] 

{{:eucalyptus_radiata.jpg?700}} \\
Eucalyptus radiata, Memoires de la Société de physique et d’histoire naturelle de Genève \\
 vol.9 t.7 (1841-1842) [J.C.Heyland] [[http://botanicalillustrations.org/species.php?id_species=411235|botanicalillustrations.org]]

{{:eucalyptus_rad.jpg?700|Eucalyptus radiata}} \\ 
Eucalyptus radiata, Melbourne, Australia (2025) © James Aicken [[https://creativecommons.org/licenses/by-sa/4.0/|CC BY-SA 4.0]] [[https://www.inaturalist.org/observations?taxon_id=639221|inaturalist.org]]