This endangered species was designated as the Hawaii State flower in 1988.  It is a shrubby type of plant found in drier areas on all the main islands except Ni`ihau and Ka-ho`olawe.  Although flower color is the most obvious distinction in these hibiscus species, notice the equally distinct differences in leaf shape. These leaves are palmate and look like maple leaves, with tiny hairs on both sides.
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/28567825@N03">Cliff</a> from Arlington, Virginia, USA
CC BY 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/nostri-imago/2858304076/">Native Yellow Hibiscus (Hibiscus brackenridgei) Pua Aloalo; Ma`o hau hele</a>