@article {Irving:1967p302,
	title = {Hesperozygis pusilla (Labiatae), a New Species from Mexico},
	journal = {Brittonia},
	volume = {19},
	number = {3},
	year = {1967},
	month = {Jul},
	pages = {245{\textendash}247},
	abstract = {Hesperozygis pusilla Irving, a rare and apparently endemic species from Galeana, Nuevo Leon, is described. It is closely allied to H. ciliolata Epling. Both H. ciliolata and H. pusilla have chromosome numbers of 2n=36.},
	url = {http://www.jstor.org/stable/2805775},
	author = {Robert Irving}
}
