Tomentaurum G.L. Nesom is a monotypic genus native to Esto. Durango, Mexico. In the cladistic analysis of the Chrysopsidinae by Semple and Tebby (1999), Tomentaurum was consistently the sister group to Noticastrum. Semple (2006) noted and illustrated the quadruple pappus of N. nivea. The genus is assumed to be x=9, although no chromosome count has been published.
Last update 30 October 2013 by J.C. Semple
© 2013 J.C. Semple, including all photographs unless otherwise indicated