Monograph of the Hawaiian Madiinae (Asteraceae) : Argyroxiphium, Dubautia, and Wilkesia

Author:

Carr, Gerald D.

Title:

Monograph of the Hawaiian Madiinae (Asteraceae) : Argyroxiphium, Dubautia, and Wilkesia

Periodical:

Allertonia ; v. 4, no. 1

Year:

1985

Volume:

4

Pages:

123 p.

Subject:

Compositae Hawaiian Madiinae Argyroxiphium Silverswords Dubautia Adaptive radiation (Evolution)

Summary:

The Hawaiian endemic genera Argyroxiphium, Dubautia, and Wilkesia comprise of 28 species. The nearest relatives of this assemblage appear to be the Pacific Coast tarweeds (Madiinae) of North America. They occupy habitats ranging from the driest to the wettest in the islands at elevations from near sea levels to 3,750 m. 35 different naturally occurring interspecific and intergeneric hybrids have been detected. An additional 29 unique interspecific and intergeneric hybrid combinations have been produced artificially. The extraordinary diversity exhibited by this genetically cohesive group makes the Hawaiian Madiinae a premier example of adaptive radiation.

Collection:

Monographs