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The Calycanthaceae (sweetshrubsorspicebushes) are a small familyofflowering plants in the order Laurales. The family contains three genera and only 10 known species [3], restricted to warm temperate and tropical regions:
| Calycanthaceae
Possible Aptian record | |
|---|---|
| |
| Calycanthus floridus | |
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Magnoliids |
| Order: | Laurales |
| Family: | Calycanthaceae Lindl.[2] |
| Genera | |
| |
| Calycanthaceae |
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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. DNA-based phylogenies indicate the Northern Hemisphere Calycanthus and Chimonanthus diverged from each other in the mid-Miocene, while the Australian Idiospermum had already diverged by the Upper Cretaceous and likely represents a remnant of a former Gondwanan distribution of Calycanthaceae.
The oldest definitive fossil of the family is Jerseyanthus from the TuronianofNew Jersey; the even earlier AraipaofBrazil and Virginianthus from Virginia may also represent members of the family, but may also be stem-Calycanthaceae or more basal Laurales.[1]
In the APG IV system of 2016, Calycanthaceae is placed in the Laurales order in the magnoliids clade.[4]