Pennyroyal  (Mentha pulegium)

Authentication

Information authenticated by Tim Rich of the National Museums and Galleries of Wales.

Ex-situ: Measures to conserve a species or habitat that occur outside of the natural range of the species. E.g. in zoos or botanical gardens.
Perennial: Plants that live for at least three seasons; after an initial period they produce flowers once a year.
Whorl: In animals, the spiral or convolutions in the shell of a snail. In plants, a set of leaves, flowers, or branches that spring from a stem at the same point and encircle it.

References

  1. Press, B. and Gibbons, B. (1993) Photographic field guide: Wild Flowers of Britain and Europe. New Holland Ltd., London.
  2. Wigginton, M.J. (1999) British Red Data Books 1; Vascular Plants. 3rd Edition. JNCC, Peterborough.
  3. UK BAP Species Action Plan (March, 2002)
    http://www.ukbap.org.uk
  4. Fisher, J. (1987) Wild Flowers In Danger. H. F. and G. Witherby, Ltd., London.
  5. Briggs, M. (1997) Non-native Mentha pulegium (Pennyroyal). BSBI News, 74: 50.
  6. Preston, C.D., Pearman, D.A. and Dines, T.D. (2002) New Atlas of the Flora of Britain and Ireland. Oxford University Press, London.
  7. National Biodiversity Network Species Dictionary (March, 2002)
    http://www.nhm.ac.uk/nbn/