Hawaiian Native Plant Genera - Asteraceae |
|||||||||||||||||||||
|
|
||||||||||||||||||||
|
*Argyroxiphium, Dubautia, and Wilkesia are apparently derived from a single colonization by an allopolyploid intergeneric hybrid of North American affinity. |
|||||||||||||||||||||
Dubautia is an endemic Hawaiian genus of 26 perennial species occurring on the major islands of the archipelago. Scandent subshrubs, shrubs, trees, and lianas; height to 8 m, girth to 5 dm, the leaves alternate, opposite, or whorled. Heads discoid, phyllaries 0; receptacular chaff scales scattered throughout the head or forming a ring encircling the disk florets, the margins sometimes fused into a cup-like false involucre; disk florets mostly 2-45, perfect, the corollas white or yellow, sometimes purplish-tinged; anthers dark purplish black to dark amber or in three species apparently pale yellow; disk cypselae 2-6.5 mm long, glabrous to hispid or sericeous, the pappus symmetrically developed, consisting of 8-28 uniseriate paleae or aristae 1-7 mm long, these very shortly laciniate-ciliate or ciliate or ascending-setose with setae 0.5-1 mm long. Chromosome numbers n = 13, 14.
Gallery of Species
|
|
|
|
|||
![]() D. kenwoodii |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|