What it the fragrant, but moderately toxic compound in this plant?
![](http://blog.schaeferwo.de/wp-content/uploads/2019/04/IMG_1051-e1554588723281-768x1024.jpg)
I will post the answer in one week.
Answer: The plant is Galium Odoratum, or Sweetscented Bedstraw, German name is „Waldmeister“. It contains the active compound Coumarin (German: Kumarin), which gives not only this plant but some cinnamon varieties and also hay its characteristic smell. The plant is used as ingredient of May Wine (German: Maibowle). It is advisable to limit the quantity and to use only plants before flourishing, otherwise the too high coumarin concentration can cause head ache.
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