Fig. 4: The effects of the precipitation and mean temperature of the warmest quarter on the proportion of annuals (among herbaceous species) in the four most annual-rich families (predictions of the linear regression model).
From: Revising the global biogeography of annual and perennial plants
a, The effects in Asteraceae (1,566 species). n = 465. b, The effects in Brassicaceae (767 species). n = 262. c, The effects in Fabaceae (1,332 species). n = 382. d, The effects in Poaceae (1,738 species). n = 513. Contour lines are drawn every 5% for all panels.
