Meadow clary  (Salvia pratensis)

Calcareous: Containing free calcium carbonate, chalky.
Perennial: Plants that live for at least three seasons; after an initial period they produce flowers once a year.
Raceme: An inflorescence where the individual flowers all have distinct stalks. (See <link>http://www.rbgkew.org.uk/ksheets/pdfs/flower.pdf</link> for a fact sheet on flower structure).
Vegetative reproduction: Type of asexual reproduction (reproduction without recombination of genetic material) that results in the propagation of plants using only the vegetative tissues such as leaves or stems. The resulting plant is genetically identical to the original plant. A well-known example of this is the reproduction of strawberry plants from 'runners'.

1. Rich, T.C.G., Lambrick, C.R. and McNab, C. (1999) Conservation of Britain's Biodiversity: Salvia pratensis L. (Lamiaceae), Meadow Clary. Watsonia, 22: 405 - 411.
   
2. Grey-Wilson, C. (1994) Eyewitness Handbooks: Wild Flowers of Britain and Northwest Europe. Dorling Kindersley, London.
   
3. Plantlife (September, 2008)
   http://www.plantlife.org.uk/uk/plantlife-saving-species-under-our-care-salvia-pratensis.htm
   
4. Grigson, G. (1996) The Englishman's Flora. Helicon Publishing Ltd, Oxford.
   
5. Byfield, A. (2002) Pers. Comm.
   
6. National Biodiversity Network Species Dictionary (March, 2002)
   http://www.nhm.ac.uk/nbn/
   
7. Wigginton, M.J. (1999) British Red Data Books 1; Vascular Plants. 3rd Edition. JNCC, Peterborough.
   
8. Dunn, J. (2003) Pers. Comm.