Rocky Mountain cow-lily
Nuphar polysepala Engelm.
Nuphar polysepala, a perennial aquatic herb in the Nymphaeaceae family, is commonly known as Rocky Mountain cow-lily. It features floating green leaves and yellow flowers, and is native to regions including British Columbia, Alaska, Arizona, and others across North America.
Description
Nuphar polysepala, described by Engelm. in 1866, is a rhizomatous aquatic plant belonging to the genus Nuphar. It is found in various parts of North America, including British Columbia, the Northwest Territories, Yukon, Alaska, Arizona, California, and other states and territories. The plant is characterized by its floating green leaves and yellow flowers, and is known by common names such as Rocky Mountain cow-lily, great yellow pond-lily, wokas, or wocus.
Other common names
Rocky Mountain cow-lilyRocky Mountain pond-lilyyellow pond-lily
Distribution
British Columbia · Northwest Territories · Yukon · Nearctic · NO · Alaska · Aleutian Is. · Arizona · California · Colorado · Idaho · Montana · Nevada · New Mexico · Northwest Territorie · Oregon · Utah · Washington · Wyoming
Synonyms
Castalia polysepalaNymphaea polysepalaNuphar lutea subsp. polysepalaNymphozanthus polysepalusNuphar polysepala var. pictaNymphaea polysepala