Brooks Rownd | profile | all galleries >> Hawai'i >> Hawaiian Flora and Fauna >> Hawaiian Plants >> Asteraceae (Sunflower Family) - Silverswords, Greenswords, Na'ena'e, Ko'oko'olau, etc >> Ko'oko'olau | tree view | thumbnails | slideshow |
The 19 endemic species of Bidens in the Hawaiian islands are a single adaptive radiation, and all are interfertile. IIRC, they are also interfertile with some North American species. A characteristic which helps idenfity native bidens species is their yellow flowers, whereas aliens usually have white flowers.
The native bidens on Hawai'i are b. campylotheca, b. hawaiensis, b. hillebrandiana, b. menziesii and b. micrantha.
Ko'oko'olau |
Ko'oko'olau |
Ko'oko'olau Flower |
Bidens Seeds |
Bidens Menziesii |
B. Menziesii |
B. Menziesii Flowers |
Alien Bidens (B. Alba?) |