Ulmus minor 'Sowerbyi'
'Sowerbyi', Cambridge Botanic Garden, 1914
The Field Elm cultivar Ulmus minor 'Sowerbyi', commonly known as the Sowerby Elm, was described (as Ulmus nitens var. sowerbyi Moss) by Moss  in The Cambridge British Flora 2: 90. 1914. The tree, once referred to as the Norfolk Elm by Smith, was commonly found in the hedgerows and woods of Norfolk, Cambridgeshire, and Huntingdonshire in the early 20th century before the advent of Dutch elm disease.
A smaller tree than 'Hunnybunii', the branches shorter and the upper ones very tortuous; leaves smaller and acute. The obovate to elliptical fruits are also smaller than 'Hunnybunii'.  Melville considered it a hybrid of 'Coritana'. 
Pests and diseases
No mature specimens are known to survive.
- Lynch, R I. (1915). Trees of the Cambridge Botanic Garden, in Journal of the Royal Horticultural Society (Ed.: Chittenden), Vol. 41, part 1, p.16, 1915.
- Green, Peter Shaw (1964). "Registration of cultivar names in Ulmus". Arnoldia. Arnold Arboretum, Harvard University. 24 (6–8): 41–80. Retrieved 16 February 2017.
- Melville, Ronald (1949). "The Coritanian Elm". Journal of the Linnean Society of London, Botany. 53 (352): 263–271.