Etymology: Najas: from Greek Naias, a water nymph
Plants: submerged annual, aquatic; stems with many branches near the top, without prickles
Leaves: stiffening and curving with time; edges with 7-15 teeth per side
Flowers: 1-2 per axil; both staminate and pistillate on the same plant
Invasiveness: Prohibited Invasive - Eradicate!
Conservation Status: Introduced - adventive; potentially invasive

Flora of North America: Flora of North America Floristic Rating: Wetland Indicator = OBL USDA Plants Database: Federal Distribution and detailed information including photos