If you download the original main image (as per icon in left corner) of flower close up and zoom in on leaves (especially at top) can see depressed midrib on underside and no noticeable rib on top, leaf apex is more acute than acuminate, and have what appear to be very short, possibly scabrous, hairs. Hope this helps?
If you look at sighting 3874011, this has been recorded before with extensive discussion - resolved to H. calycina. I think there is only one plant there.