1957 Madrono Iris section Apogon Subsection Oregonae, Subsection Novae https://www.biodiversitylibrary.org/page/47827066#page/284/mode/1up For more information on...
1959 Madrono: Natural Hybridization https://www.biodiversitylibrary.org/item/185326#page/141/mode/1up For more information on historic Irises visit the Historic I...
1990 Madrono,: Iris Thompsoni https://www.biodiversitylibrary.org/page/47955842#page/445/mode/1up For more information on historic Irises visit the Historic Iris ...
2003 Madroño: PHENETIC AND INTER VARIETAL CROSSING DATA SUPPORT THE RECOGNITION OF IRIS TENAX VAR. GORMANII (IRIDACEAE), A RARE NORTHWEST ENDEMIC https://www.biod...