@article {8105,
	title = {Plantes trouv{\'e}es en 1952 et 1953 au terrain d_immondices de la Ville de Charleroi {\`a} Jamioulx, au cours d_une cinquantaine de promenades},
	journal = {Nat. Mosana},
	volume = {6},
	year = {1954},
	month = {1954///},
	pages = {59 - 61},
	author = {J. Lebeau}
}
@article {7343,
	title = {Les compos{\'e}es _ Cynaroc{\'e}phales de Belgique},
	journal = {Bull. Jard. Bot. Etat},
	volume = {24},
	year = {1954},
	month = {1954///},
	pages = {241 - 327},
	author = {J. Ar{\`e}nes}
}
@article {7032,
	title = {Helianthus salicifolius in cultivation},
	journal = {Baileya},
	volume = {2},
	year = {1954},
	month = {1954///},
	pages = {47 - 52},
	author = {Jr, Long R. W.}
}
@article {6931,
	title = {The North American species of Asclepias L},
	journal = {Ann. Missouri Bot. Gard},
	volume = {41},
	year = {1954},
	month = {1954///},
	pages = {1 - 211},
	author = {R.E. Woodson}
}
