Fabrice Cahez / Field cow-wheat (Melampyrum arvense) in flower, Vosges, France, May.

Fabrice Cahez / Field cow-wheat (Melampyrum arvense) in flower, Vosges, France, May.

Paul Harcourt Davies / Field cow-wheat (Melampyrum arvense) Campo Imperatore, Abruzzo, Italy June 2016

Paul Harcourt Davies / Field cow-wheat (Melampyrum arvense) Campo Imperatore, Abruzzo, Italy June.

MYN / Dirk Funhoff / Field Cow-wheat (Melampyrum arvense), Ilbesheim, Rhineland-Palatinate, Germany, May. meetyourneighbours.net project

Ernie Janes / Field cow wheat (Melampyrum arvense) flowering, Chilterns, Buckinghamshire, UK, June

Andy Sands / Field Cow Wheat (Melampyrum arvense) growing abundantly among poppies - Field Cow Wheat is a rare arable weed. Bedfordshire, England, June.

Andy Sands / Field Cow Wheat (Melampyrum arvense) growing at edge of cornfield. This species is a rare, arable weed. Bedfordshire, England, UK, June.

Ernie Janes / Field cow-wheat (Melampyrum arvense) flowers amongst Feverfew, UK

Ernie Janes / Field cow-wheat (Melampyrum arvense) flowers in grassland, rare flower, Buckinghamshire, UK

Ernie Janes / Seeds of Field cow wheat (Melampynum arvense) collected, very rare flower, UK

Ernie Janes / Botanist extracting seed from Field Cow Wheat (Melampyrum sp) which is nearly extinct in UK

Andy Sands / Field Cow wheat (Melampyrum arvense) close up of flowers, growing at edge of cornfield. This species is a rare, arable weed. Bedfordshire, England, UK, May

Andy Sands / Field Cow wheat (Melampyrum arvense) in flower at edge of cornfield. This species is a rare, arable weed. Bedfordshire, England, UK, May

Andy Sands / Field Cow wheat (Melampyrum arvense) in flower at edge of cornfield. This species is a rare, arable weed. Bedfordshire, England, UK, May

Philippe Clement / Field cow wheat flowering in field {Melampyrum arvense} France

Philippe Clement / Field cow wheat flower {Melampyrum arvense} France

Staffan Widstrand / Field cow-wheat (Melampyrum arvense) in flower, Gelderse Poort, near Nijmegen, The Netherlands. July.