Here are the neat inflorescence of one of the Kolea (Myrsine spp.) native to O’ahu. This individual is on the summit of Konahuanui. The flowers are in fascicles arising from knobby structures on the stem; in large numbers like this the effect is pretty cool.
Many of the big-leafed Kolea have been lumped into Myrsine lessertiana but more works needs to be done. As with many things in nature, perhaps its not as clear cut as it seems.