Silphium terebinthinaceum
Prairie Dock
Asteraceae
Fruit Type: Achene
Fruiting Period: Oct
Flowering Period: early Jul - early Sep
Color: Light brown
Size: 7 x 11 mm
Shape: Obovate with notch, flattened
Surface Features: Longitudinal ribs
Scarification: Not required
Stratification: 30 days
Cotyledons: Oval with entire margins; midvein, large and fleshy
Leaf arrangement: Basal
Leaves: Simple, oval, petiole, entire margins, prominent midvein