Apparently, lobelias have diversified into many shapes and forms on the Hawaiian islands, many of them island endemics. I'm guessing this might have been one, despite the fact that it was quite common along the Pihea Trail. Still need to figure out which one it is.
Update: ID provided by John Game on Flickr.
The Hawaiian lobelioids are a group of flowering plants in the bellflower family, Campanulaceae, all of which are endemic to the Hawaiian Islands. This is the largest plant radiation in the Hawaiian Islands, and indeed the largest on any island archipelago, with over 125 species. The six genera can be broadly separated based on growth habit: Clermontia are typically branched shrubs or small trees, up to 7Â metres (23 ft) tall, with fleshy fruits; Cyanea and Delissea...
