Odontites vernus, the red bartsia, is a wild flower from the Broomrape family native to Europe and Asia and occurring as an alien in North America. The red bartsia is a common plant in low-fertility soils, where it lives partially as a parasite on the roots of grasses. The red bartsia has pinkish and red flowers from June to September. They prefer dry conditions and full sun light exposure and are pollinated by bees and wasps. Over the last 70 years, the red bartsia has disappeared from many woodland locations in the English county of Dorset.
- "BSBI List 2007". Botanical Society of Britain and Ireland. Archived from the original (xls) on 2015-01-25. Retrieved 2014-10-17.
- "Odontites vernus". Natural Resources Conservation Service PLANTS Database. USDA. Retrieved 29 January 2016.
- "Red Bartsia (Odontites vernus)". Nearctica. 2003. Retrieved 23 July 2009.
- "Red Bartsia". Natural England. Retrieved 23 July 2009.
- "English woodlands are losing their character". Planet Earth online. 22 July 2009. Retrieved 23 July 2009.
- Gledhill, David (2008). "The Names of Plants". Cambridge University Press. ISBN 9780521866453 (hardback), ISBN 9780521685535 (paperback). pp 278, 400
- Media related to Odontites vernus at Wikimedia Commons
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