Helianthus grosseserratus

     Sawtooth Sunflower

Asteraceae

  Fruit Type:  Achene

  Fruiting Period:  Oct - Nov

  Flowering Period:  Aug - Oct

  Color:  Brown

  Size:  2 x 4 mm

  Shape:  Quadrangular

  Surface Features:  Short-toothed crown; mottled with longitudinal ribs

  Scarification:  Not required

  Stratification:  Not required

  Cotyledons:  Oval with entire margins

  Leaf arrangement:  Opposite

  Leaves:  Simple, elongated oval, petiole, entire margins, hairs, prominent midvein