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A cytological basis for the separation of Geropogon from Tragopogon (Compositae: Lactuceae)

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Abstract

The single species ofGeropogon, G. hybridus (L.) Schultz-Bip., is sometimes submerged in the morphologically similarTragopogon. A comparative study of the karyotypes ofGeropogon andTragopogon sensu stricto clarified their relationship. The karyotype ofG. hydridus (2n=14) was compared with that ofT. dubius Scop. (2n=12). The karyotypes are distinct, offering a compelling reason to recognizeGeropogon as a separate genus.

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Authors and Affiliations

  1. USDA-ARS and Arizona Agr., Exp. Stn. 4135 E. Broadway Rd., 85040, Phoenix, AZ

    F. Douglas Wilson

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  1. F. Douglas Wilson
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Wilson, F.D. A cytological basis for the separation of Geropogon from Tragopogon (Compositae: Lactuceae). Brittonia 34, 290–293 (1982). https://doi.org/10.2307/2806700

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  • DOI: https://doi.org/10.2307/2806700

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