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Helianthus Inexpectatus (Asteraceae), A Tetraploid Perennial New Species From Southern California, David J. Keil, Mark A. Elvin
Helianthus Inexpectatus (Asteraceae), A Tetraploid Perennial New Species From Southern California, David J. Keil, Mark A. Elvin
Aliso: A Journal of Systematic and Floristic Botany
Helianthus inexpectatus is described as a new species from the Newhall Ranch of northern Los Angeles County, California. It is a tetraploid (2n = 68) perennial that is morphologically similar to--—and intermediate in some characters between--—the diploid H. nuttallii and the hexaploid H. californicus.