@article {637,
	title = {Flora of the Rio Palenque Science Center, Los Rios Province, Ecuador},
	journal = {Selbyana},
	volume = {4},
	year = {1978},
	pages = {1{\textendash}628},
	author = {Dodson, C. H. and Gentry, A. H.}
}
@article {khaleel_embryology_1978,
	title = {Embryology of Heliotropium scabrum and H. strigosum (Boraginaceae)},
	journal = {Plant Systematics and Evolution},
	volume = {129},
	number = {1},
	year = {1978},
	pages = {45{\textendash}62},
	doi = {10.1007/BF00988983},
	url = {http://www.springerlink.com/content/h63553l0740v0m24/abstract/},
	author = {Khaleel, Tasneem Fathima}
}
@mastersthesis {450,
	title = {Systematics of Heliotropium section Orthostachys in Mexico},
	year = {1978},
	school = {Harvard University},
	address = {Cambridge, Massachusetts},
	author = {Frohlich, M. W.}
}
@article {439,
	title = {Sobre la vasculatura floral, embriolog{\'\i}a y chromosomas de Ixorhea tschudiana (Heliotropiaceae)},
	journal = {Kurtziana},
	volume = {11},
	year = {1978},
	month = {1978///},
	pages = {75 - 105},
	author = {di Fulvio, T. E.}
}
