U

Ulmus 'Homestead', Homestead elm

Ulmus alata, Winged elm

Ulmus americana, American elm

Ulmus carpinifolia, Smoothleaf elm

Ulmus galbra 'Horizontalis', Tabletop Scotch elm

Ulmus parvifolia x U. Wallichanan, Hybrid elm

Ulmus parvifolia, Chinese elm; Lace bark elm

Ulmus pumila, Siberian elm

Ulmus rubra, Slippery elm

Ulmus x 'Cathedral', Cathedral elm

Utricularia, Bladderwort

Utricularia spp., Bladderwort

Uvularia grandiflora, Large-flowered bellwort

Uvularia sessilifolia, Wild oats; Sessile-leaf bellwort

Uvularia spp., Bellwort