For Hymenopappus
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Strother, J.L. 2006eee. Hymenopappus. In Flora of North America Editorial Committee. 2006c. Flora of North America north of Mexico. Volume 21, Magnoliophyta: Asteridae, part 6: Asteraceae, part 3. Oxford Univ. Press, New York, NY. 616 pp. Google Scholar
Turner, B. L. 1956. A cytotaxonomic study of the genus Hymenopappus (Compositae). Rhodora 58: 163–186, 208–242, 259–269, 295–308. Google Scholar
Turner, B.L. 2015. Hymenopappus carrii (Asteraceae: Helenieae), a new species from the gulf coastal prairie of south-central Texas. Phytologia 97: 132-134. Google Scholar