Variation in quantitative and qualitative alkaloid composition in Phalaris arundinacea (Poaceae) Journal title: Journal of Research and Applications in Agricultural Engineering (ISSN 1642-686X) Authors: Mieczysław Grzelak, Eliza Gaweł, Magdalena Janyszek-Sołtysiak, Jerzy Barszczewski, Karolina Janyszek... Subject(s):