BioStor
 | Studies on Andean Compositae V J Cuatrecasas (1961) Proceedings of The Biological Society of Washington 74: 7-27 |
 | Westoniella, a new genus of the Astereae from the Costa Rican paramos J Cuatrecasas (1977) Phytologia 35: 471-487 |
 | Taxonomic status of Nardophyllum scoparium (Asteraceae): Astereae) with observations on the definition of Nardophyllum G L Nesom (1993) Phytologia 75: 358-365 |
 | Floscaldasia (Asteraceae: Astereae): First record from Ecuador and comments on its classification G L Nesom (1993) Phytologia 75: 366-368 |
 | Chromosome Counts of Compositae from Ecuador and Venezuela David M Spooner, Diederik C D De Jong et al. (1995) Annals of the Missouri Botanical Garden 82: 596-602 |