September 8, 2020Eriogonum truncatumMount Diablo BuckwheatMount Diablo buckwheat flowers. Photo by Lech Naumovich (CC BY-NC-SA 2.0). California Rare Plant Rank 1B: Plants rare, threatened, or endangered in California and elsewhereMore InformationMount Diablo Buckwheat Reminds Us of Why We Preserve HabitatAdditional ResourcesPresumed Extinct, a Wildflower Reappears on Mount Diablo