Dutch floras mention two adventitious species of Erigeron L. sect. Phalacroloma (Cass.) Cronquist, viz. E. annuus (L.) Pers. [= Stenactis annua (L.) N. ab E.] and E. strigosus Mühlenb. ex Willd. [= Stenactis strigosa (Mühlenb. ex Willd.) DC.; S. bellidiflora (Wallr.) A. Br. ex Koch]. From a study of the specimens in several Netherlands herbaria appeared that only E. strigosus Mühlenb. ex Willd. has been found here. Nearly all the material belongs to var. septentrionalis (Fern. & Wieg.) Fern.; only a few specimens represent var. beyrichii (Fisch. & Mey.) A. Gray.