Common Name: annual sowthistle, common sowthistle
Scientific Name: Sonchus oleraceus L.
Family Name: Asteraceae (Compositae) - Aster or Sunflower Family

Identification Notes:

life cycle - annual, reproducing by seed

stems - upright, smooth, branched sparsely above growth habit 1, growth habit 2

leaves - alternate, deeply cut, lower slightly stalked, upper clasping with pointed lobes, margins weakly spined leaf bases 1, leaf bases 2

flowers - heads of pale yellow ray (ligulate) florets; terminal clusters; form "puffball" when mature flower heads 1, flower heads 2

other - contains milky sap

Images:

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