Keller, W. (1991). Vorkommen und soziologische Bindung von Ornithogalum pyrenaicum L. am Bözberg. Botanica Helvetica, 101(2), 159-165. https://doi.org/10.5169/seals-70310
In northern Switzerland, Ornithogalum pyrenaicum reaches the eastern limit of distribution at the Bözberg (Canton of Aargau). As demonstrated by 14 vegetation surveys, Ornithogalum is found mainly in forests, especially in beech and mixed beech forests on calcareous soils.
