Crataegus (Italian Wikipedia)

Analysis of information sources in references of the Wikipedia article "Crataegus" in Italian language version.

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books.google.com

Rudolf Schmid, James B. Phipps e Robert J. O'Kennon, Hawthorns and Medlars, in Taxon, vol. 52, n. 4, 2003-11, pp. 884, DOI:10.2307/3647377. URL consultato il 20 novembre 2023.

(EN) Black hawthorn (Crataegus douglasii), su for.gov.bc.ca, Ministry of Forests, Lands, Natural Resource Operations and Rural Development, Government of British Columbia, 2019. URL consultato il 20 novembre 2023.

The Royal Botanic Gardens, Kew, The Harvard University Herbaria and The Australian National Herbarium, Risultato ricerca nome pianta, su International Plant Names Index.

(EN) Crataegus, su Plants of the World Online, Royal Botanic Gardens, Kew. URL consultato il 21/11/2022.

(EN) Crataegus Species - The Hawthorns, su pfaf.org, Plants For A Future. URL consultato il 20 novembre 2023.