“STUDENT PROJECT Missing Maddenia: A Review of Rhododendron Subsection Maddenia at Logan Botanic Garden”. Sibbaldia: the International Journal of Botanic Garden Horticulture, no. 21 (July 19, 2022): 35–56. Accessed November 21, 2024. https://journals.rbge.org.uk/rbgesib/article/view/1927.