Lyonia is a genus of flowering plants in the family Ericaceae. There are about 39 species native to Asia and North America.Lyonia. Flora of China.

These are shrubs and trees, deciduous or evergreen. Some have rhizomes. The leaves are spirally arranged and the inflorescences grow in the leaf axils. The flowers are usually white, sometimes red. The fruit is a capsule.

Fossil record 37 fossil fruits of †Lyonia danica have been described from middle Miocene strata of the Fasterholt area near Silkeborg in Central Jutland, Denmark.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

Species 39 species are accepted. Lyonia affinis Lyonia alainii Lyonia alpina Lyonia buchii Lyonia chapaensis Lyonia compta Lyonia doyonensis Lyonia ekmanii Lyonia elliptica Lyonia ferruginea Lyonia fruticosa Lyonia glandulosa Lyonia heptamera Lyonia jamaicensis Lyonia latifolia Lyonia ligustrina Lyonia lippoldii Lyonia longipes Lyonia lucida Lyonia macrocalyx Lyonia macrophylla Lyonia maestrensis Lyonia mariana Lyonia microcarpa Lyonia myrtilloides Lyonia nipensis Lyonia obtusa Lyonia octandra Lyonia ovalifolia Lyonia rubiginosa Lyonia santiagoana Lyonia squamulosa Lyonia stahlii Lyonia tinensis Lyonia trinidadensis Lyonia truncata Lyonia tuerckheimii Lyonia urbaniana Lyonia villosa

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