List of elm species
''Ulmus'' subgenera and sectional classification
Classification of Ulmus is based primarily on Whittemore et al 2021. Previous Ulmus classifications include Wiegrefe et al 1994, and Melville & Heybroek 1971.
- Subgenus Indoptelea
- *Ulmus villosa - marn or cherry bark elm
- Subgenus Oreoptelea
- *U. section Blepharocarpus
- **Ulmus americana - American elm, white elm
- **Ulmus laevis - European white elm, fluttering elm, spreading elm, Russian elm
- ***Ulmus laevis var. celtidea
- ***Ulmus laevis var. laevis
- ***Ulmus laevis var. parvifolia
- ***Ulmus laevis var. simplicidens
- *U. section Chaetoptelea
- **Ulmus alata - winged elm, Wahoo
- **Ulmus crassifolia - cedar elm
- **Ulmus elongata - long raceme elm
- **Ulmus ismaelis
- **Ulmus mexicana - Mexican elm
- **Ulmus serotina - September elm
- **Ulmus thomasii - rock elm, cork elm
- Subgenus Ulmus
- *U. section Foliaceae
- **Ulmus castaneifolia - chestnut-leafed elm, multi-nerved elm
- **Ulmus changii - Hangzhou elm
- ***Ulmus changii var. changii
- ***Ulmus changii var. kunmingensis
- **Ulmus chenmoui - Chenmou elm, Langya Mountain elm
- **Ulmus chumlia
- **Ulmus davidiana - David Elm, Father David's elm
- ***Ulmus davidiana var. davidiana
- ***Ulmus davidiana var. japonica - Japanese elm, Wilson's elm
- **Ulmus harbinensis - Harbin elm
- **Ulmus microcarpa - Tibetan elm
- **Ulmus minor - field elm
- ***Ulmus minor subsp. canescens - grey elm, grey-leafed elm, hoary elm
- ***Ulmus minor var. italica - Mediterranean elm
- **Ulmus prunifolia - cherry-leafed elm
- **Ulmus pumila - Siberian elm
- **Ulmus szechuanica - Szechuan elm
- *U. section Microptelea
- **Ulmus lanceifolia - Vietnam elm
- **Ulmus parvifolia - Chinese elm, lacebark elm
- ***Ulmus parvifolia var. coreana - Korean lacebark elm
- ***Ulmus parvifolia var. parvifolia
- *U. section Trichocarpus
- **Ulmus glaucescens - Gansu elm
- ***Ulmus glaucescens var. glaucescens
- ***Ulmus glaucescens var. lasiocarpa
- **Ulmus lamellosa - Hebei elm
- **Ulmus macrocarpa - large-fruited elm
- ***Ulmus macrocarpa var. glabra
- ***Ulmus macrocarpa var. macrocarpa
- *U. section Ulmus
- **Ulmus bergmanniana - Bergmann's elm
- ***Ulmus bergmanniana var. bergmanniana
- ***Ulmus bergmanniana var. lasiophylla
- **Ulmus glabra - wych elm, Scots elm
- **Ulmus laciniata - Manchurian elm, cut-leaf elm
- ***Ulmus laciniata var. laciniata
- ***Ulmus laciniata var. nikkoensis - Nikko elm
- **Ulmus rubra - slippery elm, red elm
- **Ulmus uyematsui - Alishan elm
- **Ulmus wallichiana - Himalayan elm, Kashmir elm
- ***Ulmus wallichiana subsp. xanthoderma
- ***Ulmus wallichiana subsp. wallichiana
- *Section Incertae sedis
- **Ulmus gaussenii - Anhui elm
- **Ulmus pseudopropinqua - Harbin spring elm
Extinct elms
- Fossil elms
- *Ulmus affinis
- *Ulmus braunii
- *Ulmus brownellii
- *Ulmus carpinoides
- *Ulmus chaneyi
- *Ulmus chuchuanus
- *Ulmus fushunensis
- *Ulmus minima
- *Ulmus minoensis
- *Ulmus miopumila
- *Ulmus moorei
- *Ulmus moragensis
- *Ulmus newberryi
- *Ulmus okanaganensis
- *Ulmus owyheensis
- *Ulmus paucidentata
- *Ulmus protojaponica
- *Ulmus pseudo-americana
- *Ulmus pseudolongifolia
- *Ulmus pyramidalis
- *Ulmus pseudopyramidalis
- *Ulmus rhamnifolia
- *Ulmus speciosa
- *Ulmus stuchlikii
- *Ulmus subparvifolia
- *Ulmus tenuiservis
Ulmus eolaciniata was moved from Ulmus to the new combination Rubus eolaciniata by Tanai and Wolfe in 1977.