Clethra

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Clethra
Clethra arborea1.jpg
Clethra arborea flowers
Scientific classification edit
Kingdom: Plantae
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Ericales
Family: Clethraceae
Genus: Clethra
L.
Type species
Clethra alnifolia
Species

See text

Synonyms[5]
Clethra alnifolia 'Ruby spice'

Clethra is a genus of flowering shrubs or small trees described as a genus by Linnaeus in 1753.[1][6]

Clethra is one of two genera in the family Clethraceae (the other being Purdiaea). The species may be evergreen or deciduous, and all bear flowers in clusters (inflorescences).

Distribution[edit]

Clethra species are native to a variety of habitats, including swamps, woodland, and rocky sites[7] from temperate to tropical climates in eastern and southeastern Asia, Malesia, North and South America, and one species (C. arborea) on the island of Madeira.[5]

Fossil record[edit]

Several fossil fruits and seeds of †Clethra cimbrica have been described from middle Miocene strata of the Fasterholt area near Silkeborg in Central Jutland, Denmark.[8]

Species[edit]

The number of species accepted varies between different authorities depending on taxonomic interpretation, but with a recent trend to reduce the number recognised as distinct. The recent Flora of China (series)[9] has cut the number accepted for China from 35 to seven species, and the US Department of Agriculture[10] recognises only two in the United States, synonymising C. tomentosa with C. alnifolia. The following are accepted by the World Checklist of Selected Plant Families:[5]

References[edit]

  1. ^ a b Linnaeus, Carl von. 1753. Species Plantarum 1: 396 in Latin
  2. ^ Tropicos, search for Junia
  3. ^ Tropicos search for Volkameria
  4. ^ Tropicos search for Tinus
  5. ^ a b c Kew World Checklist of Selected Plant Families, retrieved 9 October 2016
  6. ^ Tropicos, Clethra L.
  7. ^ RHS A-Z encyclopedia of garden plants. United Kingdom: Dorling Kindersley. 2008. p. 1136. ISBN 1405332964.
  8. ^ Angiosperm Fruits and Seeds from the Middle Miocene of Jutland (Denmark) by Else Marie Friis, The Royal Danish Academy of Sciences and Letters 24:3, 1985
  9. ^ Flora of China Vol. 14 Page 238 桤叶树属 qi ye shu shu Clethra Linnaeus, Sp. Pl. 1: 396. 1753.
  10. ^ US Department of Agriculture plants profile

External links[edit]

  • Media related to Clethra at Wikimedia Commons
  • Data related to Clethra at Wikispecies