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Asarum europaeum L.- syn.Asarum officinale Moench. - Aristolochiaceae
asarabacca, European snake root, hazelwort, (Europäische) Haselwurz, Brechwurz
Prostrate evergreen perennial, up to 10cm high, with a creeping branched rhizome, native to Central and South Europe; whole plant tomentose; stems short, developing in spring, each with two leaves; leaves leathery, shiny dark green, reniform (kidney-shaped), stalkes reddish brown; flowers solitary, axillary, dark purple-brown, campanulate; fruit a many-seeded capsule.
The anaesthetic activity of trans-isoasarone and trans-isoeugenol methyl ether, both phenylpropanoids of A.europaeum, were measured in comparison to the unsubstituted propenyl benzene and to the mono methoxy derivative trans-anethole resp. benzocaine. Trans-isosarone showed local anaesthetic activity with an intensity nearly equal to benzocaine.
[The Active Substances of Asarum europaeum., Gracza, L., Planta medica, 48(7), 1983, 153-157]
A.europaeum essential oil of Romanian origin showed concentrations of 460–510 μg ml−1 for α asarone and 24–29 μg ml−1 for β asarone.
[Comparison of GC-MS and TLC techniques for asarone isomers determination., Oprean, R., Tamas, M., Roman, L., Journal of pharmaceutical and biomedical analysis, 18(1), 1998, 227-234]
Thomé,O.W., Flora von Deutschland Österreich und der Schweiz, Tafeln, vol.3 t.456 (1885)
http://plantgenera.org/species.php?id_species=95879