Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Asterids: Lamiids: Lamiales
Dig deeper at SERNEC, a consortium of southeastern herbaria.
Check out EDDMapS.org to see where this has been reported.
Aquatic weeds can clog irrigation channels and cover lakes, threatening crops and wildlife. Read more -- Outlawed! Federal Noxious Weeds: The Aquatics.
SYNONYMOUS WITH Floristic Synthesis of North America. BONAP (Kartesz, 2021)
SYNONYMOUS WITH Flora of North America
To see larger pictures, click or hover over the thumbnails.
Julia Scher, Federal Noxious Weeds Disseminules, USDA APHIS ITP, Bugwood.org bug_5376505
Julia Scher, Federal Noxious Weeds Disseminules, USDA APHIS ITP, Bugwood.org bug_5376507
M. Grodowitz, Bugwood.org bug_5431111
Aerial leaf blades elliptic-lanceolate, glabrous, margin crenate to lobed, per Flora of China.
COMPARE aquatic plants
Floristic Synthesis of North America. BONAP (Kartesz, 2021)
Flora of North America
Emergent aquatic that also has submerged leaves (rooted); Forb
Habitat: Ponds, ditches, lakes, per Weakley's Flora
Non-native: Old World tropics
CLICK HERE to see a map, notes, and images from Weakley's Flora of the Southeastern US.
Click here to see a map showing all occurrences known to SERNEC, a consortium of southeastern herbaria. (Zoom in to see more detail.)
This plant is causing problems in natural areas outside its native range, according to authorities such as:
- Georgia Exotic Pest Plant Council, 2006
- SC Department of Natural Resources Aquatic Nuisance Species List, 2003
- SC List of Regulated Pest Plant Species, 2017
- USDA Federal Noxious Weeds, 091820
Submerged leaves multiparted; aerial leaves simple
Aerial leaves whorled
Lavender to violet
2-lipped 4-5 lobed tubular or funnelform corolla
4 included stamens
Flowers solitary in leaf axils
TO LEARN MORE about this plant, look it up in a good book!
If a search such as "Carex leptalea var. leptalea" doesn't deliver the results you want, try "Carex leptalea".
Or, to minimize chances of a misspelling, try just "Carex le".
Less is more: If "pencil flower" doesn't deliver the results you want, try "pencil".