@article {8276,
	title = {Notes on some little known Amaranthus taxa (Amaranthaceae) in the United States},
	journal = {Sida},
	volume = {19},
	year = {2001},
	month = {2001///},
	pages = {975 - 992},
	author = {M. Costea and A. Sanders and G. Waines}
}
@article {8277,
	title = {Preliminary results towards a revision of the Amaranthus hybridus species complex (Amaranthaceae)},
	journal = {Sida},
	volume = {19},
	year = {2001},
	month = {2001///},
	pages = {931 - 974},
	author = {M. Costea and A. Sanders and G. Waines}
}
