This genus was hedyotis, now kadua.

K. centranthoides is a small sparse erect purplish shrub on even the most barren lava fields. In the shade of the wetter forests it grows tall and sprawling, somewhat like a short vine.

K. affinis is widespread and polymorphic. K. axillaris is very similar, and difficult to differentiate until it flowers.

I rarely see k. acuminata in the wild, and I haven't seen k. littoralis.

K. coriacea (kio'ele) is very rare in the pohakuloa area, and until recently presumed extinct.