Honest floral signalling traits vary across and within populations in an insect‐pollinated plant

In flowering plants that produce concealed rewards, pollinator foraging preferences may select for floral advertisement traits are correlated with rewards. To date, studies have not focused on the potential honest signals to vary across populations, which could occur due differences in communities or plant mating system. We tested variation and within populations systems Arabis alpina, a broadly distributed arctic-alpine perennial herb is visited by variable community of insects. greenhouse common garden, we correlations between corolla area, scent nectar volume 29 populations. 12 field examined pollen limitation area. Across systems, larger flowers generally produced more nectar. Total emission was production, but two compounds—phenylacetaldehyde benzyl alcohol—may be some Corolla area only Our results suggest similar result from contemporary direct selection advertisements. Read free Plain Language Summary this article Journal blog.