Family: Hydrocharitaceae
nodding water-nymph, northern water-nymph, slender naiad
[Caulinia flexilis Willd., more...]
Paul Skawinski
Robert W. Freckmann
University of Wisconsin-Stevens Point, Robert W. Freckmann Herbarium (UWSP)
Etymology: Najas: from Greek Naias, a water nymph
Plants: submerged annual, to 40" tall, monoecious aquatic, can be slender and trailing or dense and bushy; stems very long, many branches; slight rootstock
Leaves: pale green, very narrow, to 2"L x 0.5"W, toothed edges, opposite, clasping stem, wide-sloped at base;
Flowers: tiny, from leaf axis
Fruits: glossy, paper-thin walls, 30-50 rows of small pits
Habitat: wet; clear 3' or more deep water; in sandy, gravelly soil
Conservation Status: Native
Plants: submerged annual, to 40" tall, monoecious aquatic, can be slender and trailing or dense and bushy; stems very long, many branches; slight rootstock
Leaves: pale green, very narrow, to 2"L x 0.5"W, toothed edges, opposite, clasping stem, wide-sloped at base;
Flowers: tiny, from leaf axis
Fruits: glossy, paper-thin walls, 30-50 rows of small pits
Habitat: wet; clear 3' or more deep water; in sandy, gravelly soil
Conservation Status: Native
Flora of North America: Flora of North America Floristic Rating: Coefficient of Conservatism = 6, Wetland Indicator = OBL USDA Plants Database: Federal Distribution and detailed information including photos University of Wisconsin - Green Bay: Wetland Plants: Photos, descriptions, information USDA Agricultural Research Service (ARS): Images of seeds, fruits, embryos, etc. USDA Agricultural Research Service (ARS): Images of seeds, fruits, embryos, etc.
Robert W. Freckmann
Paul Skawinski
Botanical Illustration
