Nettle is part of the English name of many plants with stinging hairs, particularly those of the genus Urtica. It is also part of the name of plants which resemble Urtica species in appearance but do not have stinging hairs.
Plants called "nettle" include:
ball nettle – Solanum carolinense
bull nettle
Cnidoscolus stimulosus, bull nettle, spurge nettle
Cnidoscolus texanus, Texas bull nettle
Cnidoscolus urens, bull nettle
Solanum elaeagnifolium, bull nettle, silver-leaf nettle, white horse-nettle
dead nettle, dumb nettle
Lamium, particularly Lamium album
false nettle – Boehmeria
flame nettle – Coleus
hedge nettle – Stachys
hemp nettle – Galeopsis
horse nettle:
Agastache urticifolia – horse-nettle
Solanum carolinense – ball-nettle, Carolina horse-nettle
Solanum dimidiatum – western horse-nettle, robust horse-nettle
Solanum elaeagnifolium – bull nettle, silver-leaf nettle, white horse-nettle
Solanum rostratum – horse-nettle
nettle tree or tree nettle:
Celtis
Various species of the genus Dendrocnide
Urera baccifera
Urtica ferox
nilgiri nettle, Himalayan giant nettle - Girardinia diversifolia
painted nettle – Coleus blumei
rock nettle – Eucnide
small-leaved nettle – Dendrocnide photinophylla
spurge nettle – Cnidoscolus
stinging nettle
Hesperocnide
most, but not all subspecies of Urtica dioica
Urtica incisa
Urtica ferox
tree nettle - see nettle tree
white nettle
Lamium album
Pipturus argenteus
wood nettle - Laportea canadensis
