Silphium integrifolium

     Rosinweed

Asteraceae

  Fruit Type:  Achene

  Fruiting Period:  late Sep

  Flowering Period:  mid Jul - late Aug

  Color:  Light brown

  Size:  7 x 12 mm

  Shape:  Oval with notch, flattened

  Surface Features:  Pappus of two teeth; winged

  Scarification:  Not required

  Stratification:  30 days

  Cotyledons:  Oval with entire margins

  Leaf arrangement:  Basal

  Leaves:  Simple, oval with tapered end, petioles, serrated margins, hairs