Robuta

https://www.threesepals.com/ three sepals three https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0043189 Tonoplast- and Plasma Membrane-Localized Aquaporin-Family Transporters in Blue Hydrangea Sepals of... Hydrangea (Hydrangea macrophylla) is tolerant of acidic soils in which toxicity generally arises from the presence of the soluble aluminum (Al) ion. When... https://commons.wikimedia.org/wiki/Category:Sepals Category:Sepals - Wikimedia Commons categorywikimediacommons