Not sure about the folder icon, but the + is missing because there's nothing to expand - the + icon shows up once you have folders inside that folder. You'd hit the + to expand the list to see what folders it had within it, but there's no folders there to display.
Shouldn't need it, I'm not positive why it's missing the icon, but there's already 1 file in there (a default .htaccess file), so it's definitely a folder that can accept files.