- Río Mayo Plants of Sonora-Chihuahua (1942), later updated posthumously as Gentry's Rio Mayo Plants (University of Arizona Press, 1998) ISBN 0-8165-1726-6
- The Agave Family of Sonora (USDA, 1972)
- The Agaves of Baja California (California Academy of Sciences, 1978)
- Agaves of Continental North America (University of Arizona Press, 1982) ISBN 0-8165-2395-9
The standard botanical author abbreviation
Gentry is applied to plants described by this botanist, who should also appear on this list.
Howard Scott GentryHoward Scott GentryHoward Scott GentryHoward Scott Gentry