Hmmmm....so there's another one who thinks that they are Jerusalem Artichokes...
I'm not sure I know enough to count
We have lots of flowers
that look like behind our house. There is a guy who lives a few houses down who works for the town and plants natives and trees to help 'reforest' the area. I've seen lots of flowers
that look like helianthus and the pics that Wrennie posted, and each plant seems to be different a bit (some are taller than me, I'm 6'1") and some are about 3 feet tall. Some have brown centers, some are black. Some have lobed leaves and some leaves are veined. I'm assuming most of these are about the same. I'll see if I can find the guy tomorrow and ask him.