Notizen: Exkret-Flavonoide bei Hieracium intybaceum (Asteraceae) / Exudate Flavanoids in Hieraceum intybaceum, an Alpine Hawkweed (Asteraceae)

Abstract

The hawkweed Hieracium intybaceum is covered with glandular trichomes that produce a sticky resinous exudate. This material, assumedly of terpenoid nature, contains trace amounts of flavonoid aglycones. They could be identified to be known flavones and flavanones. This is the first time that an alpine Asteraceae was found to exude flavonoid aglycones.