Surely one of the greatest sights in all England. Thousands upon thousands of Snake's Head Fritillaries (Fritllaria meleagris) bloom in April in the water meadows of Magdalen College, Oxford.
 They might well be ancient and indigenous to this location. Then again Richard Mabey speculates in his book Flora Britannica that they could have been an introduction from another large colony in Cricklade, Wiltshire in the 18th. century.
 We'll probably never know for sure but clearly the conditions suit them to grow in such numbers.