Comptonia
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 Comptonia peregrina foliage
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| Comptonia peregrina (L.) J.M.Coulter |
Comptonia is a genus of a single species, Comptonia peregrina (syn. Comptonia aspleniifolia (L.) L'Hér.), in the family Myricaceae, order Fagales. It is native to eastern North America, from southern Quebec south to the extreme north of Georgia, and west to Minnesota. The common name is Sweetfern or Sweet-fern, a confusing name as it is not a fern.
It is a deciduous shrub, growing to 1.5 m tall. The leaves of the plant are linear to lanceolate, 3-15 cm long and 0.3-3 cm broad, with a modified dentate, pinnately lobed margin; they give off a sweet odor, especially when crushed. The flowers are imperfect, meaning that no one flower has both gender parts. It tends to grow on dry sandy sites, and is associated with pine stands.
Comptonia is used as a food plant by the larvae of some Lepidoptera species including Bucculatrix paroptila, Grey Pug, Setaceous Hebrew Character and the following case-bearers of the genus Coleophora: C. comptoniella, C. peregrinaevorella (which feeds exclusively on Comptonia), C. persimplexella, C. pruniella and C. serratella.
Several fossil species have been discovered, showing that the genus once had a much wider distribution throughout the Northern Hemisphere.
[edit] References
- Flora of North America: Comptonia peregrina
- Germplasm Resources Information Network: Comptonia peregrina
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