Fig. 2
From: European mushroom assemblages are darker in cold climates

Histogram of mushroom lightness. a–c Three exemplar species are shown with their respective color lightness (upper half of the pie chart represents each of the 9 single cap measurements; lower half of the pie chart the respective mean). Species from left to right: a Entoloma sericeum (color lightness: 18), b Cortinarius semisanguineus (color lightness: 47), c Hygrophorus eburneus (color lightness: 86). d Histogram of color lightness of 3054 mushroom-forming species (color range from 18 to 98). Photos by Peter Karasch (a) and Franz-S. Krah (b, c). Source data underlying d are provided in Supplementary Data 1, 2, and 3