Atlas of the Flora of New England

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Genera - U

Ulex
Ulmus
Uniola (See Chasmanthium)
Urochloa
Urtica
Utricularia
Uvularia


ULEX (Family: Fabaceae)


ULEX EUROPAEUS Linnaeus - Common Gorse. 2n = (32), (64), 96.


Rocky headland turf, dry slopes, pine woods, usually in sandy soil. From Europe.


ULEX MINOR Roth - Dwarf Gorse. 2n = 32.


Sand plains. From Europe. [U. NANUS T.F. Forster ex Symons]



ULMUS (Family: Ulmaceae)


Ulmus americana Linnaeus - American Elm. 2n = 56.


Rich soil along streams, roadsides.


ULMUS GLABRA Hudson - Wych Elm. 2n = 28.


Roadsides, woodlands. From Eurasia.


ULMUS MINOR Miller - Smooth-leaved Elm. 2n = 28.


Roadsides. From Eurasia and northern Africa. [U. CARPINIFOLIA Gleditsch]


ULMUS PARVIFOLIA Jacquin - Chinese Elm. 2n = 28.


Roadsides. From eastern Asia.


ULMUS PROCERA Salisbury - English Elm. 2n = 28.


Roadsides. From Europe.


ULMUS PUMILA Linnaeus - Siberian Elm. 2n = 28.


Railroads, roadsides, woodland borders. From Asia.


Ulmus rubra Muhlenberg - Slippery Elm. 2n = 28.


Rich soil, often calcareous, often along streams.


Ulmus thomasii Sargent - Rock Elm. 2n = 28.


Calcareous ledges, rich upland woods.



UROCHLOA (Family: Poaceae)


UROCHLOA TEXANA (Buckley) R. D. Webster - Texas Millet. 2n = 36, 54.


Fields, waste places. From farther west [PANICUM TEXANUM Buckley]



URTICA (Family: Urticaceae)


URTICA DIOICA Linnaeus subsp. DIOICA - Stinging Nettle. 2n = (26), (48), 52.


Waste places, roadsides. From Eurasia.


Urtica dioica Linnaeus subsp. gracilis (Aiton) Selander - Wild Stinging Nettle. 2n = 26, 52.


Thickets, rich, damp soil, roadsides, waste places. [U. gracilis Aiton; U. procera Muhlenberg ex Willdenow; U. viridis Rydberg]


URTICA URENS Linnaeus - Dog Nettle. 2n = 24, 26.


Waste places, roadsides. From Eurasia.



UTRICULARIA (Family: Lentibulariaceae)


Utricularia cornuta Michaux - . 2n = 18.


Pond shores, bogs.


Utricularia geminiscapa Benjamin - . 2n = ?


Ponds, pools, sluggish streams.


Utricularia gibba Linnaeus - . 2n = ?


Ponds, pools, bogs. [U. biflora Lamarck; U. fibrosa Walter]


Utricularia inflata Walter - . 2n = 18, 36.


Ponds.


Utricularia intermedia Hayne - . 2n = (22), 44.


Ponds, pools, bogs, swamps.


Utricularia minor Linnaeus - . 2n = 36, 44.


Ponds, pools, wet meadows, bogs, shores.


Utricularia purpurea Walter - . 2n = ?


Ponds, sluggish streams.


Utricularia radiata Small - . 2n = ?


Ponds, sluggish streams. [U. inflata Walter var. minor Chapman]


Utricularia resupinata B.D. Greene ex Bigelow - . 2n = 44.


Shores of ponds, lakes and rivers.


Utricularia subulata Linnaeus - . 2n = ?


Sandy pond shores, swamps, in peat or leaf mold.


Utricularia vulgaris Linnaeus subsp. macrorhiza (Leconte) R.T. Clausen - . 2n = 36, 44.


Ponds and other quiet water. [U. vulgaris subsp. vulgaris misapplied]



UVULARIA (Family: Colchicaceae)


Uvularia grandiflora Smith - Big Merry-bells. 2n = 14.


Rich, moist woods and thickets, chiefly basic.


Uvularia perfoliata Linnaeus - Perfoliate Bellwort. 2n = 14.


Rich, usually dry, woods and thickets, preferring acid soils.


Uvularia sessilifolia Linnaeus - Wild-oats. 2n = 14.


Woods, thickets, clearings.





Designed by Ray Angelo. Revised Dec. 9, 2016