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The Calycanthaceae (sweetshrub or spicebush family) is a small family of flowering plants included in the order Laurales. The family contains four genera and only 6-11 species, restricted to warm temperate and tropical regions:

• Calycanthus (2-4 species; western and southeastern North America)
• Chimonanthus (3-6 species; eastern Asia)
• Idiospermum (1 species; Queensland, Australia)
• Sinocalycanthus (1 species; eastern Asia)

They are aromatic deciduous shrubs growing to 2–4 m tall, except for Idiospermum, which is a large evergreen tree. The flowers are white to red, with spirally arranged tepals.

References

• Calycanthaceae in L. Watson and M. J. Dallwitz (1992 onwards). The families of flowering plants.
• Flora of North America: Calycanthaceae
• Flora of China Draft text of Calycanthaceae