Literature
- Flora Protection Order ( 1999. ) Irish Statute Book.
- Jebb, H. P. (unpubl.) Red Data Book 2006, from the Proposed Red Data List of Vascular Plants in Ireland (rcdoct2005.xls) from: http://www.botanicgardens.ie/gspc/news/news.htm. .
- Jebb, H. P. and M. J. P. Scannell ( 2000. ) Flora of Connemara and the Burren - Records from 1984. Glasra 4: 7-45.
- Preston, C. D., D. A. Pearson and T. D. Dines ( 2002. ) New Atlas of the British and Irish Flora. Oxford University Press, UK.
- Stace, C. ( 1997. ) New Flora of the British Isles. Cambridge University Press, The Bath Press, UK.
- Webb, D. A., J. Parnell and D. Doogue ( 1996. ) An Irish Flora. Dundalgan Press, Dundalk.