Canada's Plant Hardiness Site

Asteraceae daisy family
Silphium perfoliatum var. perfoliatum L.
En: cup plant, cup rosinweed, carpenter weed, Indian cup, ragged cup, compass plant;
Fr: silphium perfolie

• [=Resinocaulon perfoliatum (L.) Lunell]
• [=Silphium conjunctum Willd.]
• [=Silphium connatum L.]
• [=Silphium erythrocaulon Bernh. ex Spreng.]
• [=Silphium perfoliatum L. forma petiolatum E.J. Palmer & Steyerm.]
• [=Silphium perfoliatum L. subsp. connatum (L.) Cruden]
• [=Silphium perfoliatum L. var. conjunctum (Willd.) Pursh]
• [=Silphium perfoliatum L. var. connatum (L.) Cronquist]
• [=Silphium scabrum Moench, nom. illeg. hom., non Walter]
• [=Silphium tetragonum Moench, nom. illeg.]