@article {Irving:1970p784,
	title = {Novelties in Hedeoma (Labiatae)},
	journal = {Brittonia},
	volume = {22},
	number = {4},
	year = {1970},
	pages = {338{\textendash}345},
	author = {RS Irving}
}
@article {Irving:1976p944,
	title = {Chromosome numbers of Hedeoma (Labiatae) and related genera},
	journal = {Systematic Botany},
	volume = {1},
	number = {1},
	year = {1976},
	pages = {46{\textendash}56},
	author = {RS Irving}
}
@article {Irving:1979p631,
	title = {Artificial hybridization in Hedeoma (Labiatae)},
	journal = {Systematic Botany},
	year = {1979},
	pages = {1{\textendash}15},
	author = {RS Irving and HS Brenholts and DD Irving}
}
