I only have Lime Rickey and it doesn't flower either. Here's the photo.

Jazz, is it just not flowering now, or do you mean that it never flowers? Not that that would really matter as the leaves are so beautiful all by themselves!

Well, this is only my 2nd year growing Heucheras. I began last summer and none of my 20+ Heucheras had flowers (except a couple tried to shoot out maybe one or two stems). This year beginning in spring, majority of them sent out so many flowers. Only a few have not and Lime Rickey is one them. I actually prefer it this way. I enjoy seeing the chartreuse color of Lime Rickey.

I have Key Lime Pie and they are sending up flower stalks right now. I've had it for 4 years now and every year it flowers pink and they last for many weeks.

Thanks mk, the one I think is Key Lime Pie looks just like yours with flower stalks as well now. I'll watch to make sure the flower is pink. :)