Gumweed gone to seed and drying out

Yesterday you saw a flower head of gumweed (Grindelia sp.). Now here’s what one looks like after it has gone to seed and begun to dry out. I originally assumed that the conspicuous object at the upper left is a seed from this plant, but it seems so large and incongruous, and I’ve often enough seen a seed from one kind of plant get stuck on another, that now I don’t know. If any native plant people can help out here, please do.

Like the last photograph, today’s comes from an extant parcel of the Blackland Prairie along Old Settlers Blvd. at Greenhill Dr. in Round Rock on July 14th.

© 2013 Steven Schwartzman