Gesneriad References
The Gesneriad Society
http://www.gesneriadsociety.org/African Violet Society of America (AVSA)
The Gesneriad Reference Web
Gesneriad Classification
http://www.gesneriadsociety.org/resources/gesneriad-classification/
Gesneriad Propagation
http://www.gesneriadsociety.org/resources/propagate.htm
International Registry
http://www.gesneriadsociety.org/registered-gesneriads/international-registry/