Nymphaea mexicana naturally occurs in the southeastern United States, and northern and central Mexico; introduced to California, US Mid-West, and elsewhere. It grows in alkaline lakes, marshes, warm springs, sloughs, slow-moving streams, ponds, and ditches; 0-1,100 m. This species has thick rhizomes; stolons are long, with yellow, banana-like roots. Leaves are floating, ovate to elliptic, purplish above and green below, mottled with brown; margins entire or sinuate. Flowers are floating or emersed (6-11 cm in diameter), with yellow-green sepals and 12-30 yellow petals. The flowers close at night. Fruit is green, berry-like; seeds globose. Hybridizes with Nymphaea odorata. Considered a noxious weed outside the native range.

		24642 Yellow Water-lily (Nymphaea mexicana) Santa Ana National Wildlife Refuge Hidalgo County Texas, USA Copyright © Michael Patrikeev All Rights Reserved Note Diamondback Watersnake (Nerodia rhombifer)
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