On a Thailand trip, John asked his father Jack where a particular tree was. "Over by Heidi", he said. Um, what's Heidi? That yellow? I thought that was a Panitta seedling? Oops, sorry everyone, the tree is actually Heidi, PSA #175. Fantastic strong floral scent on solid, bright yellow, thick 3" blooms on a dense, semi-compact tree. Almost pure yellow in color, nice clusters and an excellent bloomer.