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Rosa alba L. - Rosaceae - white rose (of York), Weiße Rose, Alba-Rose
Shrub, up to 2m tall, only known in cultivation (old garden rose of the Greeks and Romans); prickles irregularly set on the stems, usually hooked and uniform; leaves with 5-7 leaflets, ovate to broadly elliptic, obtuse, simply serrate, glabrous above, paler, grey-green, ± hairy beneath; flowers solitary or 3(-5) rarely more, white or rarely pale pink, simple or usually double or semidouble, rarely simple, fragrant.
http://www.efloras.org/florataxon.aspx?flora_id=5&taxon_id=242345219
The essential oil of white oil-bearing roses (R. alba L.) from Bulgaria contained 214 compounds (GC-MS). The major part of the oil components were hydrocarbons like heneicosane (17.4%), nonadecan (15.0%), nonadecene (6.7%), tricosane (4.6%), pentacosane (1.4%) and heptacosane (1.6%). Major other components were citronellol (13.3%), geraniol (9.0%), nerol (4.3%), caryophyllene (3.0%), and farnesol (2.3%).
[Bulgarian rose oil of white oil-bearing rose., Nedkov, N., Dobreva, A., Kovacheva, N., Bardarov, V., Velcheva, A., Bulg J Agric Sci, 15, 2009, 318-322] http://www.agrojournal.org/15/04-07-09.pdf
Duhamel du Monceau, H.L., Traité des arbres et arbustes, Nouvelle édition [Nouveau Duhamel], vol. 7: t. 16, fig. 1 (1819) [P. Bessa]
http://plantgenera.org/species.php?id_species=1259719
Rosa alba, CC BY-SA 3.0, Author: Andreas Kraska