Graminae/ Poaceae

Agropyron - bunchgrass habit

Agropyron - inflorescence of several spikelets arranged in spike

Lolium - spikelet of several florets

Panicum - spikelet with one fertile floret; note feathery stigma

bamboo

Triticum (wheat) - spikelet, with long awns on the lemmas

Zea (maize or corn) - variety of 'ears' from market in Mexico