Clethraceae

Clethraceae
Clethra arborea flowers
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Asterids
Order:	Ericales
Family:	Clethraceae Klotzsch [1]
Genera
Clethra Purdiaea

The Clethraceae are a small family of flowering plants in the order Ericales, composed of two genera, Clethra and Purdiaea , with approximately 75 species. ^[2] They are native to warm temperate to tropical regions of Asia and the Americas, with one species also on Madeira.^{[ citation needed ]}

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. ^[3]

References

1. Angiosperm Phylogeny Group (2009). "An update of the Angiosperm Phylogeny Group classification for the orders and families of flowering plants: APG III". Botanical Journal of the Linnean Society. 161 (2): 105–121. doi: 10.1111/j.1095-8339.2009.00996.x . hdl: 10654/18083 .
2. Christenhusz, M. J. M. & Byng, J. W. (2016). "The number of known plants species in the world and its annual increase". Phytotaxa. 261 (3). Magnolia Press: 201–217. Bibcode:2016Phytx.261..201C. doi: 10.11646/phytotaxa.261.3.1 .
3. Anderberg, A.A.; Zhang, Z. (2002). "Phylogenetic relationships of Cyrillaceae and Clethraceae (Ericales) with special emphasis on the genus Purdiaea Planch". Organisms Diversity & Evolution. 2 (2): 127–137. Bibcode:2002ODivE...2..127A. doi: 10.1078/1439-6092-00036 .