A GOODLY haul.

They are nowhere like as easy to spot after the event. 
I drove, slowly, past where I thought they were, no joy.
I turned & drove slowly back, nil return. 
When I say slowly = I could walk faster.
I got out and toddled the same few yards - there they were.
Seeds were easily shedding so I brought a couple of stalks home; behold the yield from a slight shake of one stalk, caught in the pan lid; many of which have now been sown.