- Bonsai Clubs International: River birch - Betula nigra
- Provides general information on the plant. Includes growth, watering, pests and diseases.
- Duke university: River Birch (Betula nigra)
- Presents infomration on the physical characteristics of the plant. With photos.
- Floridata: Betula nigra
- Provides information on the distinguishing characteristics, culture, location and usage. With photos.
- Missouri Botanical Garden: Betula nigra
- Offers information on the distinguishing features of the specie. Includes uses, distribution, etymology and discussions.
- NorthEastern Area State and Private Forestry: Sweet Birch
- Provides data on the habitat, life history, genetics, uses and distribution. With photos.
- Ohio Public Library Information Network: River Birch: Betula nigra
- Contains information on the features of the plant. Includes anatomy and photos.
- Plants for a future: Betula nigra - L.
- Contains description on the physical characteristics of the plant. Includes distribution, growth and propagation.
- Western North Carolina Nature Center: River Birch - Betula nigra Betulaceae - Birch family
- Presens information on the habitat, distribution, life history, special uses and genetics and reproduction.
- Wild Flower Center: Betula nigra L.
- Contains description on the physical characteristics of the plant. Includes distribution, growth, propagation and remarks.
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