Fig. 1: Distributions of observed phenology in the herbarium record by (a) observed date of phenology and (b) average spring (March–April) temperature (°C).
From: Wildflower phenological escape differs by continent and spring temperature

Distributions of observed understory wildflower First Flowering Date (FFD; blue) and canopy tree Leaf-out Date (LOD; gold) in temperate forests in Asia, Europe, and North America. Grey shading behind the violin plots in panel a indicates the March–April period used to model and forecast phenology.