Silphium perfoliatum

Silphium perfoliatum L. (eastern N-Am.) – A very rare escape from cultivation. Formerly naturalized in river bottoms along river Demer near Betekom, at least between 1871 and 1890 but now gone. This particular habitat fully corresponds with the one in its native distribution range. Later also recorded in a ditch of a road verge near Yvoir (Houx) along river Meuse (Druet & Duvigneaud 1951) but not confirmed lately. Finally also recorded on a railway bank in Mortsel (Luithagen), at least between 1952 and 1972 (D’hose & De Langhe 1973) but now gone.

Silphium perfoliatum is still cultivated as an ornamental in Belgium but probably only rarely so. In recent times, however, this species is sometimes sown as an energy crop, also in Belgium (for instance in Eeklo in 2016).

Herbarium specimen

 


Literature

D’hose R. & De Langhe J.-E. (1973) Nieuwe groeiplaatsen van zeldzame planten in België. Bull. Soc. Roy. Bot. Belg. 106: 273-277.

Druet J. & Duvigneaud J. (1951) Note sur quelques phanérogames adventices. Lejeunia 15: 59-62.

Henker H. (2002) Erstnachweise und Funde bemerkenswerter Pflanzenarten für Mecklenburg-Vorpommern (Gefässpflanzen). Bot. Rundbr. Mecklenburg-Vorpommern 36: 89-96.

Lambinon J. (1957) Contribution à l’étude de la flore adventice de Belgique. I. adventices rares ou nouvelles pour la Belgique. Bull. Soc. Roy. Bot. Belg. 89: 85-100.

Neumerkel W., Martin B. & Linke G. (1978) Silphium perfoliatum L. - eine Nutzpflanze? Wiss. Zeitschr.Martin-Luther-Univ. Halle-Wittenberg, Math. Nat. 27(3): 31-38.

Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith