Kathy E. identified the flower below from the Landisville pictures. It’s a Ptilotus exaltatus 'Joey' (Lamb's Tail) a recently tamed cultivar of an annual species native to Australia.
The flowers of Ptilotus 'Joey' may resemble a grass, but it's not a grass. Ptilotus is a large genus of 100 species, most native to dry areas of Australia. This genus was first described by botanist Robert Brown in 1810.Speaking of Landisville, Bob K. sent around this link to the 2009 Variety Trials there. I’ve added it to the sidebar.