Ecology of Achene Dimorphism in Leontodon saxatilis

[corrected] Leontodon saxatilis produces two morphologically distinct achenes (morphs) in a single capitulum: one row of dark brown achenes without a pappus lies at the edge ('peripheral achenes'; 0.74 +/- 0.18 mg) while the inner ones are light brown with a pappus ('central achenes'; 0.38 +/- 0.07 mg). The hypothesis that achene heteromorphism in L. saxatilis widens its ecological amplitude was tested.