BioStor
 | Fifth list of additions to the flora of Washington, D.C T Holm (1901) Proceedings of The Biological Society of Washington 14: 7-22 |
 | New North American Lepidoptera with notes on larvae H G Dyar (1903) Proceedings of the Entomological Society of Washington 5: 290-298 |
 | Kansas Aphididae, with catalogue of North American Aphididae, and with host-plant list, part II Sanborn (1906) Kansas University Science Bulletin 3: 225-275 |
 | The feeding habits of Geranomyia Frederick Knab (1910) Proceedings of the Entomological Society of Washington 12: 61-65 |
 | Diptera of the superfamily Tipuloidea found in the District of Columbia C P Alexander and W L Mcatee (1920) Proceedings of the United States National Museum 58: 385-435 |
 | Chromosome Numbers in Compositae. XIII. Eupatorieae Robert M King, Donald W Kyhos et al. (1976) Annals of the Missouri Botanical Garden 63: 862-888 |
 | An index to epithets treated by King and Robinson: Eupatorieae (Asteraceae) M J Warnock (1987) Phytologia 62: 345-431 |