Commelinaceae  (Spiderwort Family)

Characteristics:
*three petals
*color generally blue or purple, can be other color
*three green sepals
*six stamens
*radially symmetric or bilateral with two large upper petals, one 
smaller lower one
*bracts beneath or partly enclosing flower clusters
*ovary superior

Family: Commelinaceae

     Genera and Species:
 
          Genus: Tradescantia (spiderworts)
                 T. virginiana
                 T. bracteata
                 T. ohiensis
                 T. occidentalis   
          Genus: Commelina (dayflowers)
                 C. communis
                 C. virginica
                 C. erecta