Molecular Biology and Genetics
Statistics of barcoding coverage
Specimen Records: 59
Specimens with Sequences: 70
Specimens with Barcodes: 61
Species With Barcodes: 10
Public Records: 23
Public Species: 7
The Clethraceae are a small family of flowering plants in the order Ericales, native to warm temperate to tropical regions of Asia and the Americas, with one species also on Madeira. The family comprises two genera, Clethra and Purdiaea.
In the past, most botanists included only Clethra in the family, but recent research has shown Purdiaea, previously placed in the closely related family Cyrillaceae, is more closely allied to Clethra. 
- Angiosperm Phylogeny Group (2009). "An update of the Angiosperm Phylogeny Group classification for the orders and families of flowering plants: APG III" (PDF). Botanical Journal of the Linnean Society 161 (2): 105–121. doi:10.1111/j.1095-8339.2009.00996.x. Retrieved 2013-06-26.
- (Anderberg & Zhang 2002).
- Clethraceae in L. Watson and M.J. Dallwitz (1992 onwards). The families of flowering plants.
- Germplasm Resources Information Network: Clethraceae
- Anderberg, A. A. & Zhang, Z. (2002). Phylogenetic relationships of Cyrillaceae and Clethraceae (Ericales) with special emphasis on the genus Purdiaea. Organisms, Div. & Evol. 2: 127–137.
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