The picture looks suspiciously like Johnson grass (Sorghum halepense), a noxious weed here in KS.
hortster

Here is a link that might be useful: Johnson grass

I think you're right, hortster!
I Googled it, and the pictures showed Johnson grass with the white central vein, and the flowers looked identical. One site even said it looked similar to corn, which is exactly what I always think of when I see it, and they showed a picture of it growing in the gravelly soil next to a railroad track!
It's actually attractive, but I think I'll pass on it, and not gather seeds from it to sow in my meadow.
Sherry

Some good advice - DO NOT EVEN THINK ABOUT IT! If it is indeed Johnsongrass, it spreads like crazy, usurps those that we would prefer. Therefore, NOXIOUS WEED! ;)
hortster