# Longleaf Pondweed (*Potamogeton nodosus*) Longleaf Pondweed is a water plant that grows in ponds and lakes. Its long, green leaves float on the water's surface, making it a cozy home for fish and frogs. - **Category:** [Plants](https://www.snappit.app/explore/categories/plant) - **Rarity:** Common - **Danger:** 1/5 · Very low - **Snaps:** 2 - **Habitat:** Wetlands ![Longleaf Pondweed](https://commons.wikimedia.org/w/index.php?title=Special:Redirect/file/Potamogeton_natans_The_Lakes_NRA.jpg&width=800) Photo: Jim Conrad, Public domain · [Wikimedia Commons](https://commons.wikimedia.org/wiki/File:Potamogeton_natans_The_Lakes_NRA.jpg) ## Appearance The Longleaf Pondweed has long, ribbon-like leaves submerged underwater and distinctive oval-shaped leaves that float on the surface. Its small, greenish-brown flowers grow on spikes above the water, making it easy to spot in still waters. ## Taxonomy - **Kingdom:** Plantae - **Phylum:** Tracheophyta - **Class:** Liliopsida - **Order:** Alismatales - **Family:** Potamogetonaceae - **Genus:** Potamogeton ## Interesting facts - It can grow super long, sometimes reaching over 10 feet from the bottom to the surface! - Longleaf Pondweed is found almost everywhere, thriving on different continents across the world! - Many animals, from tiny insects to large ducks, munch on its tasty seeds and leaves. - This plant helps fish by making oxygen, which they need to breathe underwater! ## Special abilities - **Dual Leaf Advantage:** Longleaf Pondweed can grow two types of leaves: thin, flexible ones underwater and broader, floating ones to catch more sun. - **Flexible Navigator:** Its long, pliable stems can bend and sway with water currents, preventing damage in moving water. - **Rooted Revival:** Longleaf Pondweed can regrow from special underground tubers, helping it survive harsh conditions and spread. ## Measurements & details - **Height:** 50-300 cm - **Flower Size:** 0.2-0.5 cm - **Bloom Season:** Late spring to late summer - **Edible:** Yes - **Toxicity:** None - **Lifecycle:** Perennial - **Pollination Method:** Wind ## Ecological connections - **Eats:** Mallard Duck (*Anas platyrhynchos*) — Consumes its nutrient-rich seeds and leaves. - **Eats:** [Muskrat](https://www.snappit.app/explore/muskrat) (*Ondatra zibethicus*) — Feeds on its starchy rhizomes and stems. - **Shelter:** [Northern Pike](https://www.snappit.app/explore/northern-pike) (*Esox lucius*) — Hides in dense beds, ambushing prey. - **Shelter:** Freshwater Shrimp (*Gammarus pulex*) — Finds refuge among its submerged leaves. ## Traits - [Flowering](https://www.snappit.app/explore/traits/flowering): Flowering plants are any plants that produce flowers as part of their reproductive cycle. - [Grass-Like](https://www.snappit.app/explore/traits/grass-like): Grass-like plants are herbaceous plants that visually resemble true grasses, typically having long, narrow leaves. - [Edible](https://www.snappit.app/explore/traits/edible): Edible plants are those parts of a plant that are considered safe for human consumption. - [Pollinator Magnet](https://www.snappit.app/explore/traits/pollinator-magnet): Describes plants that are particularly attractive and beneficial to a wide range of pollinating organisms. - [Rapid Growing](https://www.snappit.app/explore/traits/rapid-growing): Rapid growing plants exhibit accelerated growth rates, quickly increasing in size and biomass within a short period. - [Wetland](https://www.snappit.app/explore/traits/wetland): This habitat trait identifies species found in wetlands, which are areas of land saturated with water, either permanently or seasonally, including marshes, swamps, and bogs. - [Freshwater](https://www.snappit.app/explore/traits/freshwater): Freshwater habitats include non-saline aquatic environments such as rivers, lakes, ponds, and wetlands, vital for numerous species. - [Keystone Species](https://www.snappit.app/explore/traits/keystone-species): Describes a species whose presence and role have a disproportionately large effect on its environment. - [Aquatic](https://www.snappit.app/explore/traits/aquatic): Aquatic habitats encompass environments where organisms live predominantly in water, including oceans, rivers, lakes, and wetlands. ## Collections - [Plants](https://www.snappit.app/explore/collections/plants) ## Safety **Danger:** 1/5 · Very low Always be careful near water and ask an adult before exploring. ## Frequently Asked Questions ### How to identify Longleaf Pondweed? Start with the whole plant, then compare leaf arrangement, leaf edges, stems and any flowers or fruit. Opposite leaves grow in pairs; alternate leaves come one at a time along the stem. These details tell you far more together than a single green leaf does. Plant Identifier: upload a photo and compare the visible details. ### How tall is Longleaf Pondweed? 50-300 cm ### How big are the flowers on Longleaf Pondweed? 0.2-0.5 cm ### When does Longleaf Pondweed bloom? Late spring to late summer ### Is Longleaf Pondweed edible? Yes ### Is Longleaf Pondweed toxic? None ### What is Longleaf Pondweed's lifecycle? Perennial ### How is Longleaf Pondweed pollinated? Wind ## Where to spot - [Franks Tract State Recreation Area](https://www.snappit.app/guides/places/franks-tract-state-recreation-area) — California, US · State Park - [Iowa State Fairgrounds](https://www.snappit.app/guides/places/iowa-state-fairgrounds) — Iowa, US · Historic District ## More Plants - [white snakeroot](https://www.snappit.app/explore/white-snakeroot) (*Ageratina altissima*) - [tree-of-heaven](https://www.snappit.app/explore/tree-of-heaven) (*Ailanthus altissima*) - [western sword fern](https://www.snappit.app/explore/western-sword-fern) (*Polystichum munitum*) - [common milkweed](https://www.snappit.app/explore/common-milkweed) (*Asclepias syriaca*) --- Source: [Longleaf Pondweed: Facts & Places to See — Snappit](https://www.snappit.app/explore/longleaf-pondweed)