Poa pratensis

The most commonly grown lawn grass in Indiana, also occurring in upland forest and along roadsides.

Inflorescences at Shades State Park in Montgomery County, 5/22/06.

Spikelets at Shades S.P., 5/22/06.

Inflorescences at Shades S.P., 5/22/06. I've included this picture primarily because it shows the typical 4-5 branches at lower nodes of the inflorescence, whereas the first picture shows a slightly atypical 3 branches.