Can't find the icon Macintosh HD on my desktop, how do I get it back?

I just noticed that the Macintosh HD icon is missing from my desktop...have looked all over for it. Search just gives (path/) no path. Finder is working well, but in trying to resolve the situation I clicked on the arrow beside the list of hard drives in the left column in finder window and I lost the icon there. I know, very stupid!! Please help!