@article {669,
	title = {Heliotropium disciforme (Boraginaceae), a new species from northeast Iran},
	journal = {Linzer Biologische Beitr{\"a}ge},
	volume = {23},
	year = {1991},
	pages = {569{\textendash}573},
	author = {Akhani, H.}
}
@article {668,
	title = {Heliotropium esfandiarii (Boraginaceae), a new species from north-central Iran},
	journal = {Linzer Biologische Beitr{\"a}ge},
	volume = {23},
	year = {1991},
	pages = {615{\textendash}620},
	author = {Akhani, H. and Riedl, H.}
}
