Referenser

Among rather recently published, more comprehensive and partly wide-ranging floras the following ones give detailed information of occurrence, generally presented on maps: Atlas of Distribution of Trees and Shrubs in Poland. Polska Akademia Nauk. Part 1–32/ 1963–81. Poznan.

Welten & Sutter, Verbreitungsatlas der Farn- und Blütenpflanzen der Schweiz. Vol. 1–2 (1982). Birkhäuser/Basel.

Perring & Walters, Atlas of the British flora. Bot. Soc. Brit. Is. London and Edinburgh 1962.

Pignatti, Flora d'Italia. Vol. 1-3 (1982). Edagricole/Bologna.

Davis, Flora of Turkey and East Aegean Islands. Vol. 1–8 (1965–84). University Press/Edinburgh.

Hulten, Flora of Alaska and Neighboring Territories. A manual of the vascular plants. Stanford Univ. Press/Stanford, California. 1968.

H. J. Scoggan, The Flora of Canada. 1–4. Ottawa 1978-79.

Porsild & Cody, Vascular Plants of Continental Northwest Territories, Canada. National Museums of Canada/Ottawa. 1980.