branched burreed
Sparganium erectum L.
Overview
- Appearance
- Sparganium erectum is a perennial wetland or aquatic herbaceous plant that is native to North America. It grows from slender rhizomes with slender terete stems. S. erectum grows from 3-8 ft. (0.9-2.4 m) tall. It is found around the world and is listed as native to North America, Africa, temperate Asia and Europe.
- Foliage
- The long flat leaves are alternate. They are often slightly keeled. The leaves may be either floating or held above the water.
- Flowers
- The inflorescence is branched. Each inflorescence has from 5-13 staminate heads and 2-4 pistillate heads. Pistillate heads are sessile.
- Fruit
- Fruits are obovoid sessile nutlets. Fruits have a truncated top with a small style at the tip.
- Ecological Threat
- Sparganium erectumis a federally listed noxious weed. It can be found in California and other states, as well as Canada. S. erectum is listed as introduced to Australia.
Selected Images
Maps
EDDMapS Distribution - This map is incomplete and is based only on current site and county level reports made by experts, herbaria, and literature. For more information, visit www.eddmaps.org
State List - This map identifies those states that list this species on their invasive species list or law. For more information, visit Invasive.org
Invasive Listing Sources
- Federal Noxious Weeds
- Florida Noxious Weeds
- Indiana Invasive Species Council - Invasive Plant List
- Indiana Prohibited Plant Species
- Massachusetts Noxious Weeds
- Massachusetts Prohibited Plant List
- Nonnative Invasive Species in Southern Forest and Grassland Ecosystems
- South Carolina Illegal Aquatic Plants
- USDA APHIS Regulated Pest List
Taxonomic Rank
| Kingdom: Plantae |
| Phylum: Magnoliophyta |
| Class: Liliopsida |
| Subclass: Commelinidae |
| Order: Typhales |
| Family: Sparganiaceae |
| Genus: Sparganium |
| Subject: Sparganium erectum L. |
Synonyms and Other Names
Other Common Names:
exotic bur-reed, branched burreed,simple-stem burr-reed, simplestem bur-reed
References
Common Name Reference: Weed Science Society of America Common Names List
Scientific Name Reference: PLANTS Database