Species Detail Forb

Flower spikes and leaves		Yavapai County Native & Naturalized Plants Potamogeton nodosus - longleaf pondweed Synonyms: Potamogeton americanus, Potamogeton fluitans, Potamogeton oblongifolius Other Common Names: knotty pondweed Plant Form: Forb or Subshrub Family: Potamogetonaceae
Flower spikes and leaves


Home	Plant Communities	Plant List	Search Forbs and Subshrubs	Search Grasses	Search Woody Plants	Additional Resources	About this Website

Click on Any Image for a Larger View
Leaves and flower spike USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 191	Plants Max Licher @http://swbiodiversity.org, Usage Rights: Creative Commons Attribution-ShareAlike (CC BY-SA)

Forb Plant Description

Origin: Native Life Cycle: Perennial
General Desc: Widely spread aquatic perennial having submerged branching stems about 2 to 8 feet long with both submerged and floating leaves born on long leaf stems, a distinctive feature. Rhizomes present.
Identification notes: Perennial fresh or brackish plant with jointed stems; submerged narrow to ovate leaves up to 1/8 inch wide with a stem and a blade; floating leaves are broad and leathery with long stems.
Height: 1 to 8 foot spread

Habitat

Habitat Description: Appearing in clear to turbid waters of lakes, streams, rivers and sloughs. Frequent in ditches, streams, and lakes.
Plant Communities: Riparian
Elevation: 1500 - 8000 feet

Flower Characteristics

Color: Greenish, whitish Shape: Other in elongated clusters Tubular: N Flowering Period: May - Aug
Description: Spikes of tiny flowers from the axils of floating leaves rise above the surface of the water. Spikes are 3/4 to 2 inches long.

Leaf and Stem Characteristics

Leaf Color: Green Leaf Type: Simple Leaf Shape: Round or oval Leaf Margin: Smooth Leaf Attachment: Alternate Leaves Clasp: N
Hairs: No Spines: N
Leaf Description: Waxy-shiny, elliptic to ovate, stalked, and leathery. Stems are green to pale yellow.

Fruit and Seed Characteristics

Fruit Color: Reddish-brown
Fruit Type: Achene
Fruit Notes: Tiny, less than 1/8 inch long and wide; usually one seeded and does not separate or split open at maturity.


	Arizona Cooperative Extension Yavapai County 840 Rodeo Dr #C Prescott, AZ 86305 (928) 445-6590	Version 8.0 http://cales.arizona.edu/yavapaiplants/SpeciesDetailForb.php Last Updated: Dec 13, 2022 Content Questions/Comments: Email Matt Halldorson Legal Disclaimer