- Limnophila sessiliflora is a rooted, aquatic, perennial, herbaceous plant that grows up to 12 ft (3.7 m) tall. It is fast growing, grows new plants from fragments, and can exist in a variety of aquatic habitats.
- Leaves of this plant have two types of whorled polymorphic leaves. The submerged stems have dissected, dark green, lance shaped leaves up to 1.2 in. (30 mm) long with irregularly serrated margins. The emergent stems have flat shiny hairs and fine, needle like leaves up to 0.12 in. (3 cm) long.
- The small flowers are sessile and arise singly from the leaf axis. The violet, lavender, pink, or blue flowers have five fused petals that form a tube. The floral tube has two lips, which have distinct purple lines on the undersides. The five sepals are green and hairy. Sepals are from 0.16-0.2 in. (4-5 mm) long.
- The fruit is an ellipsoid capsule that can contain up to 150 seeds.
- Ecological Threat
- L. sessiliflora can shade out and out compete other aquatic plants. It can tolerate a wide range of growing conditions. L. sessiliflora is listed as a Federal Noxious Weed.
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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 Invasive List - This map identifies those states that list this species on their invasive species list. For more information, visit Invasive.org
Invasive Listing Sources
- Apalachicola Invasive Working Group
- California Noxious Weeds
- Federal Noxious Weeds
- Florida Exotic Pest Plant Council - Category II
- Georgia Exotic Pest Plant Council - Category 3
- Massachusetts Noxious Weeds
- New Hampshire Prohibited Aquatic Species
- Nonnative Invasive Species in Southern Forest and Grassland Ecosystems
- North Carolina Noxious Weeds - Class A
- South Carolina Noxious Weeds
- Treasure Coast Cooperative Invasive Species Mgmt. Area - EARLY DRAFT
- USDA APHIS Regulated Pest List
- Vermont Noxious Weeds
|Common Name Reference:|| Weed Science Society of America Common Names List|
|Scientific Name Reference:||USDA, NRCS. 2010. The PLANTS Database. National Plant Data Center, Baton Rouge, LA, USA.|