Thursday, June 18, 2009

Silphium perfoliatum foliage

[Photo: Silphium perfoliatum foliage showing 'cup' formed where leaves join stem.]Silphium perfoliatum, known in English as "cup plant" and in French as plante bain d'oiseaux or plante à calice, is a perennial native to eastern and central North America. The common names refer to the little hollow formed where the leaves join the stem, which often collects water.

I photographed this plant at Riverdale Farm.

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