Authorssort descendingYearTitle
W. H. Blackwell, Baechle, M. D., Williamson, G.1978Synopsis of Kochia (Chenopodiaceae) in North America
M. Costea, Sanders, A., Waines, G.2001Notes on some little known Amaranthus taxa (Amaranthaceae) in the United States
M. Costea, Sanders, A., Waines, G.2001Preliminary results towards a revision of the Amaranthus hybridus species complex (Amaranthaceae)
M. Costea, Tardif F. J.2002Taxonomy of the most common weedy European Echinochloa species (Poaceae: Panicoideae) with special emphasis on characters of the lemma and caryopsis
J. O. Luken, Thieret, J. W., Kartesz, J. T.1993Erucastrum gallicum (Brassicaceae): invasion and spread in North America
P. M. McKenzie, Michael, P. W., Urbatsch, L. E., Noble, R. E., Proctor, G. R.1993First record of Echinochloa stagnina (Poaceae) for Puerto Rico and key to the Echinochloa in the West Indies
A. M. Planchuelo2006A new combination in the Bromus catharticus complex (Poaceae: Bromeae sect. Ceratochloa)
R. L. Stuckey1972Taxonomy and distribution of the genus Rorippa (Cruciferae) in North America
E. E. Terrell, Peterson, P. M., Reveal, J. L., Duvall, M. R.1997Taxonomy of North American species of Zizania (Poaceae)
R. D. Webster1987Taxonomy of Digitaria section Digitaria in North America (Poaceae: Paniceae)
R. D. Webster, Hatch S. L.1990Taxonomy of Digitaria section Aequiglumae (Poaceae: Paniceae)
R. D. Webster, Hatch S. L.1981Taxonomic relationships of Texas specimens of Digitaria ciliaris and Digitaria bicornis (Poaceae)
R. D. Webster, Shaw R. B.1982Relationship between Digitaria milanjana (Poaceae: Paniceae) and the annual species of Digitaria section Digitaria in North America
Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith