Bobea sandwicensis , Rubiaceae, 'ahakea, Auwahi, Maui, endemic. Boehmeria grandis , Urticaceae, 'akolea, endemic.
Exserted stamens are visible in some of the male flowers in the enlarged image at the right.
Boerhavia repens , Nyctaginaceae, alena, indigenous. Bonamia menziesii , Convolvulaceae, bonamia, endemic. Brighamia insignis , Campanulaceae, alula, endemic. Brighamia rockii , Campanulaceae, alula, endemic. Broussaisia arguta , Hydrangeaceae, kanawao, endemic.