Clethra is a genus of ca. 75-85 species, mainly distributed in tropical America and parts of Asia (a single species in North America and Madeira). Eight species are cultivated as ornamentals in Europe (Wann 1997) but only Clethra alnifolia is more or less widespread in cultivation.

Clethra alnifolia


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Tucker G.C. & Jones S.C. (2009) Clethra. In: Flora of North America Editorial Committee (eds.), Flora of North America, vol. 8. Oxford University Press, New York-Oxford: 364-366.

Wann J.D. (1997) Clethra. In: Cullen J. & al. (eds.), The European Garden Flora, vol. 5. Cambridge University Press, Cambridge: 415-416.

Taxonomic name: 
Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith