Widgets appear to be entirely missing from my device

When I long press on the Home screen, I am offered a "Choose Wallpaper From" menu. Everything I've looked at says I should be able to add Widgets here also, but nope. Widgets are not automatically added when I install one, and I've been through the Settings pretty thoroughly without seeing a mention of Widgets. What am I missing? I have a Nexus 4 running 4.3.