Mooring, J.S. 1992. Chromosome numbers and geographic distribution in Chaenactis douglasii (Compositae, Helenieae). Madrono. 39: 263-270.

Mooring, J.S. 1992. Chromosome numbers and geographic distribution in Chaenactis douglasii (Compositae, Helenieae). Madrono. 39: 263-270.

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