Symphyotrichum squamatum (Spreng.) Nesom
| Review of the taxonomy of Aster sensu lato (Asteraceae: Astereae), emphasizing the New World species G L Nesom Phytologia 77: 141-297 | |
| Plant ecology of the Bulli district. Part II: plant communities of the plateau and scarp C Davis (1941) Proceedings of The Linnean Society of New South Wales 66: 1-32 | |
| Apopyros (Asteraceae: Astereae), a new genus from southern Brazil, Argentina and Paraguay G L Nesom (1994) Phytologia 76: 176-184 | |
| 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 |