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Rhododendron anthopogon D.Don - Ericaceae

Small shrub, up to 1.50m tall, native to Nepal, Northern India, Bhutan, China (S Xizang); leaves aromatic, obovate-elliptic, ovate; inflorescence 4-6(-9)-flowered; corolla narrowly tubular-funnelform, pink, or yellowish white, tube 6-12mm long; capsule ovoid, 3-5mm.
http://www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=200016332
https://npgsweb.ars-grin.gov/gringlobal/taxonomydetail.aspx?id=418051
https://sites.google.com/site/efloraofindia/species/a---l/e/ericaceae/rhododendron/rhododendron-anthopogon

The essential oil of the leaves owns „…a sweet, fresh, and light aroma. Use for respiratory or for the beautiful scent.“
Main components of commerical oils were α-pinene (28.3-30.9%), β-pinene (12.1-13.1%), limonene (7.0-10.7%), δ-cadinene (9.0-9.5%), and β-caryophyllene (2.6-3.6%).
https://pompeiiorganics.com/rhododendron/ [GCMS of two batchesgiven, retrieved 2018/01/16]

„The oil was characterized by a high amount of monoterpene hydrocarbons (76.1%), mainly α-pinene (37.4%), followed by β-pinene (16.1%), limonene (13.3%), and the sesquiterpene, δ-cadinene (9.1%). The composition of R. anthopogon essential oil was quite different from those of other Rhododendron species: the main components of R. nivale essential oil are δ-cadinene and α-cadinol, whereas β-pinene, camphene and δ-3-carene are the major constituents of the oil of R.mucronulatum. The composition of R. anthopogonoides essential oil is also totally different; infact, its main components are benzylacetone and selina-3,7-diene. Furthermore, studies on essential oils from leaves of R. dauricum and R. aureum found that the dominant compounds were trans-caryophyllene and calarene, respectively.“
[Innocenti, Gabbriella, et al. „Chemical composition and biological properties of Rhododendron anthopogon essential oil.“ Molecules 15.4 (2010): 2326-2338]