Trifolium campestre Schreb.

BIBLIOGRAPHY AND WEB SITES:
Pignatti S. - Flora d’Italia (3 voll.) - Edagricole - 1982
Reader’s digest encyclopaedia of garden plants and flowers - Reader’s Digest - Milano - 1988
Ricciardelli D’Albore G., Intoppa F. - Fiori e api - Edagricole - 2000 - www.bombus.it/pdf/ fiori_e_api/fiori_e_api.pdf
Ricciardelli D’Albore G., Atlas of world unifloral honeys - Fai Apicoltura - 2019
Simonetti G., Frilli F., Barbattini R., Iob M. - Flora di interesse apistico - Appendice a APICOLTURA Numero 5 - 1989
The European Garden Flora - Cambridge University Press Vol VI - 2000
The European Garden Flora - Cambridge University Press Vol I - II - III - IV - V 56- 1980
The Plant List - www.theplantlist.org
Acta Plantarum - The Italian Flora - www.actaplantarum.org/
Discover life, global map - www.discoverlife.org/
CABI, Invasive Species Compendium - www.cabi.org/
Plants For A Future - www.pfaf.org/
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USDA Plants Database - plants.usda.gov/java/nameSearch
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Florabeilles (INRA) - www.florabeilles.org
Floridata - floridata.com/home
Delivering Alien Invasive Species Inventories for Europe - www.europe-aliens.org/default.do
Australian FLORA - www.australia.gov.au/about-australia/australian-story/austn-flora
Flora of Australia Online - www.anbg.gov.au/abrs/online-resources/flora/main-query-styles.html
Florabeilles (INRA) http://www.florabeilles.org
Worldfloraonline, An Online Flora of All Known Plants - http://www.worldfloraonline.org/