Cercis siliquastrum
- Image of flowers, Provence, France.
- http://www.boulouris.org/promenades/fleurs_1024/pages/en_06_judee1.htm

Cercis canadensis
- Includes distribution and occurrence, botanical and ecological characteristics, value and use, and fire ecology.
- http://www.fs.fed.us/database/feis/plants/tree/cercan/

Cercis occidentalis
- image
- http://www.botany.hawaii.edu/faculty/carr/images/cer_occ.jpg