Assertion: periwinkle's flower | /r/MadeOf | vincamine
Facets:
Source sentences:
text: Periwinkle flowers also contain vincamine, vinpocetine, bitter substance (vincine), triterpenes (folic acid, etc.), Iridoid (loganic acid), phytosterols, phenolic acids, flavonoids, potassium and sodium salts.
text: Whether Periwinkle flowers contain any vincamine I did not learn.