Links for Betula sp. to Wikipedia, Encyclopedia of Life, iNaturalist, IUCN Red List, and my websiteLink to English Wikipedia entry: Birch
Link to German Wikipedia: Birken
Link to French Wikipedia: Bouleau
Link to EOL.org: Betula sp.
Link to iNaturalist.org: Betula sp.
Don't have Red List Status for Betula sp.
Links to my pictures: Birch
Binomial Links for Betula sp. on www.guenther-eichhorn.com