Mid bloomer.  Tiny yellow flowers, three leaflets, low, many-branched trailing plant. Also called Shamrock.

Notes:  An alien species.  The 3 palmate leaves have blunt ends. The flowers are in tiny loose heads.  Peterson lists this as Shamrock and Hop Clover: Trifolium agrarium.

Click on species name below to go to USDA for this plant

Kingdom Plantae -- Plants 
    Subkingdom Tracheobionta -- Vascular plants 
        Superdivision Spermatophyta -- Seed plants 
            Division Magnoliophyta -- Flowering plants 
                Class Magnoliopsida -- Dicotyledons 
                    Subclass Rosidae 
                        Order Fabales 
                            Family Fabaceae -- Pea family 
                                Genus Trifolium L. -- clover
                                    Species Trifolium dubium Sibthorp -- suckling clover